From ac0d74181605de2288e46b5e51319cdcb666fc59 Mon Sep 17 00:00:00 2001
From: Stefan Roiser <stefan.roiser@cern.ch>
Date: Sat, 22 Nov 2025 19:19:45 +0100
Subject: [PATCH 01/27] new file

change branch

pwd

Enhance hello world step with directory listing

new file
---
 .github/workflows/mg5_ghci.yml | 15 +++++++++++++++
 1 file changed, 15 insertions(+)
 create mode 100644 .github/workflows/mg5_ghci.yml

diff --git a/.github/workflows/mg5_ghci.yml b/.github/workflows/mg5_ghci.yml
new file mode 100644
index 0000000000..efa4b34575
--- /dev/null
+++ b/.github/workflows/mg5_ghci.yml
@@ -0,0 +1,15 @@
+name: ghci
+
+on:
+  push:
+    branches: ghci
+
+jobs:
+  test:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v4
+    - name: hello world
+      run: echo hello world && echo `pwd` && echo `ls`

From 339c58c9504b0b5b6766f6be74fe6281ea01f26d Mon Sep 17 00:00:00 2001
From: Stefan Roiser <stefan.roiser@cern.ch>
Date: Wed, 26 Nov 2025 14:32:04 +0100
Subject: [PATCH 02/27] update submodule

fix process

move ci file

update submodule
---
 .github/workflows/mg5_codegen.yml | 102 ++++++++++++++++++++++++++++++
 .github/workflows/mg5_ghci.yml    |  15 -----
 test/processes/pp_ttx/launch.mg5  |   6 ++
 test/processes/pp_ttx/output.mg5  |   2 +
 4 files changed, 110 insertions(+), 15 deletions(-)
 create mode 100644 .github/workflows/mg5_codegen.yml
 delete mode 100644 .github/workflows/mg5_ghci.yml
 create mode 100644 test/processes/pp_ttx/launch.mg5
 create mode 100644 test/processes/pp_ttx/output.mg5

diff --git a/.github/workflows/mg5_codegen.yml b/.github/workflows/mg5_codegen.yml
new file mode 100644
index 0000000000..5cbd0f0952
--- /dev/null
+++ b/.github/workflows/mg5_codegen.yml
@@ -0,0 +1,102 @@
+name: Code Generator CI
+
+on:
+  pull_request:
+    types: [opened, synchronize, reopened]
+
+jobs:
+  generate-and-check:
+    runs-on: ubuntu-latest
+    
+    steps:
+      - name: Checkout codegen repo
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      
+      - name: Run code generator
+        run: |
+          chmod +x codegen.sh
+          ./codegen.sh
+      
+      - name: Check code format with clang-format
+        id: format-check
+        run: |
+          # Find all generated C/C++ files (adjust pattern as needed)
+          find . -type f \( -name "*.c" -o -name "*.cpp" -o -name "*.h" -o -name "*.hpp" \) > files.txt
+          
+          # Run clang-format check
+          if clang-format --dry-run --Werror $(cat files.txt) 2>&1 | tee format-output.txt; then
+            echo "format_ok=true" >> $GITHUB_OUTPUT
+            echo "✅ Code is properly formatted"
+          else
+            echo "format_ok=false" >> $GITHUB_OUTPUT
+            echo "❌ Code needs formatting"
+            
+            # Generate the diff for needed changes
+            clang-format -i $(cat files.txt)
+            git diff > format-changes.patch
+          fi
+      
+      - name: Commit to target repository
+        if: steps.format-check.outputs.format_ok == 'true'
+        env:
+          TARGET_REPO: your-username/target-repo  # Change this
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}  # Or use a PAT: secrets.TARGET_REPO_PAT
+        run: |
+          # Configure git
+          git config --global user.name "github-actions[bot]"
+          git config --global user.email "github-actions[bot]@users.noreply.github.com"
+          
+          # Clone target repo
+          git clone https://x-access-token:${GH_TOKEN}@github.com/${TARGET_REPO}.git target-repo
+          cd target-repo
+          
+          # Create branch based on PR number
+          BRANCH_NAME="codegen-pr-${{ github.event.pull_request.number }}"
+          git checkout -b ${BRANCH_NAME}
+          
+          # Copy generated files (adjust paths as needed)
+          cp -r ../generated-output/* .
+          
+          # Commit and push
+          git add .
+          git commit -m "Code generated from PR #${{ github.event.pull_request.number }}" \
+                     -m "Source PR: ${{ github.event.pull_request.html_url }}"
+          git push origin ${BRANCH_NAME}
+          
+          echo "✅ Pushed to ${TARGET_REPO} on branch ${BRANCH_NAME}"
+      
+      - name: Comment on PR with format issues
+        if: steps.format-check.outputs.format_ok == 'false'
+        uses: actions/github-script@v7
+        with:
+          script: |
+            const fs = require('fs');
+            const patch = fs.readFileSync('format-changes.patch', 'utf8');
+            
+            const comment = `## ❌ Code Format Check Failed
+            
+            The generated code does not conform to clang-format rules.
+            
+            <details>
+            <summary>Required formatting changes</summary>
+            
+            \`\`\`diff
+            ${patch}
+            \`\`\`
+            
+            </details>
+            
+            Please update your code generator to produce properly formatted code.`;
+            
+            github.rest.issues.createComment({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: comment
+            });
+      
+      - name: Fail if format check failed
+        if: steps.format-check.outputs.format_ok == 'false'
+        run: exit 1
diff --git a/.github/workflows/mg5_ghci.yml b/.github/workflows/mg5_ghci.yml
deleted file mode 100644
index efa4b34575..0000000000
--- a/.github/workflows/mg5_ghci.yml
+++ /dev/null
@@ -1,15 +0,0 @@
-name: ghci
-
-on:
-  push:
-    branches: ghci
-
-jobs:
-  test:
-
-    runs-on: ubuntu-latest
-
-    steps:
-    - uses: actions/checkout@v4
-    - name: hello world
-      run: echo hello world && echo `pwd` && echo `ls`
diff --git a/test/processes/pp_ttx/launch.mg5 b/test/processes/pp_ttx/launch.mg5
new file mode 100644
index 0000000000..2acf6a78e1
--- /dev/null
+++ b/test/processes/pp_ttx/launch.mg5
@@ -0,0 +1,6 @@
+launch PROC_pp_ttx
+set vector_size 32
+set nevents 25k
+set sde_strategy 1
+set gridpack True
+
diff --git a/test/processes/pp_ttx/output.mg5 b/test/processes/pp_ttx/output.mg5
new file mode 100644
index 0000000000..0299c86959
--- /dev/null
+++ b/test/processes/pp_ttx/output.mg5
@@ -0,0 +1,2 @@
+generate p p > t t~
+output madevent_simd PROC_pp_ttx

From c1967870ffb718110aa13dcaf82adf9e46716708 Mon Sep 17 00:00:00 2001
From: Stefan Roiser <stefan.roiser@cern.ch>
Date: Mon, 12 Jan 2026 09:53:58 +0100
Subject: [PATCH 03/27] add py.py

---
 .gitignore | 1 +
 1 file changed, 1 insertion(+)

diff --git a/.gitignore b/.gitignore
index d59d93cf5c..a8ade725e6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,6 +5,7 @@
 *.mod
 *.pyc
 *.so
+py.py
 build.*
 .build.*
 

From dc1e05bff71a423b84dc1f0953ce1fd8a2a375c3 Mon Sep 17 00:00:00 2001
From: Stefan Roiser <stefan.roiser@cern.ch>
Date: Mon, 12 Jan 2026 09:54:21 +0100
Subject: [PATCH 04/27] gen one process

pwd

pwd

pwd

mg5

fetch submodules

disable all processes, generate first process

fix remote repo

fix typo

generate one process
---
 .github/workflows/mg5_codegen.yml                         | 8 +++++---
 ...lprocesses.yml => testsuite_allprocesses.yml.disabled} | 0
 2 files changed, 5 insertions(+), 3 deletions(-)
 rename .github/workflows/{testsuite_allprocesses.yml => testsuite_allprocesses.yml.disabled} (100%)

diff --git a/.github/workflows/mg5_codegen.yml b/.github/workflows/mg5_codegen.yml
index 5cbd0f0952..182e39f672 100644
--- a/.github/workflows/mg5_codegen.yml
+++ b/.github/workflows/mg5_codegen.yml
@@ -13,15 +13,17 @@ jobs:
         uses: actions/checkout@v4
         with:
           fetch-depth: 0
+          submodules: true
       
       - name: Run code generator
         run: |
-          chmod +x codegen.sh
-          ./codegen.sh
+          if [ ! -e MG5aMC/mg5amcnlo/PLUGIN/CUDACPP_SA_OUTPUT ] ; then pushd MG5aMC/mg5amcnlo/PLUGIN/ && ln -s ../../../epochX/cudacpp/CODEGEN/PLUGIN/CUDACPP_SA_OUTPUT && popd ; fi
+          ./MG5aMC/mg5amcnlo/bin/mg5_aMC test/processes/pp_ttx/output.mg5
       
       - name: Check code format with clang-format
         id: format-check
         run: |
+          cd PROC_pp_ttx
           # Find all generated C/C++ files (adjust pattern as needed)
           find . -type f \( -name "*.c" -o -name "*.cpp" -o -name "*.h" -o -name "*.hpp" \) > files.txt
           
@@ -41,7 +43,7 @@ jobs:
       - name: Commit to target repository
         if: steps.format-check.outputs.format_ok == 'true'
         env:
-          TARGET_REPO: your-username/target-repo  # Change this
+          TARGET_REPO: roiser/madgraph4gpu-generated-processes
           GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}  # Or use a PAT: secrets.TARGET_REPO_PAT
         run: |
           # Configure git
diff --git a/.github/workflows/testsuite_allprocesses.yml b/.github/workflows/testsuite_allprocesses.yml.disabled
similarity index 100%
rename from .github/workflows/testsuite_allprocesses.yml
rename to .github/workflows/testsuite_allprocesses.yml.disabled

From f47c8ff94154fabcac231c1dfcc34ca25ca30962 Mon Sep 17 00:00:00 2001
From: Stefan Roiser <stefan.roiser@cern.ch>
Date: Mon, 12 Jan 2026 10:49:32 +0100
Subject: [PATCH 05/27] copy files over

move to PAT

empty

add pwd

add git status

spell out repo

fix repo name

more debug

go one level up

copy files over
---
 .github/workflows/mg5_codegen.yml | 30 +++++++++++++++++++++++-------
 1 file changed, 23 insertions(+), 7 deletions(-)

diff --git a/.github/workflows/mg5_codegen.yml b/.github/workflows/mg5_codegen.yml
index 182e39f672..ef28ac49d8 100644
--- a/.github/workflows/mg5_codegen.yml
+++ b/.github/workflows/mg5_codegen.yml
@@ -44,27 +44,43 @@ jobs:
         if: steps.format-check.outputs.format_ok == 'true'
         env:
           TARGET_REPO: roiser/madgraph4gpu-generated-processes
-          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}  # Or use a PAT: secrets.TARGET_REPO_PAT
+          GH_TOKEN: ${{ secrets.MG4GPU_GEN_PAT }} ## ${{ secrets.GITHUB_TOKEN }}  # Or use a PAT: secrets.TARGET_REPO_PAT
+          persist-credentials: true
         run: |
+          cd ..
           # Configure git
-          git config --global user.name "github-actions[bot]"
-          git config --global user.email "github-actions[bot]@users.noreply.github.com"
+          git config --global user.name "github-actions"
+          git config --global user.email "github-actions@users.noreply.github.com"
           
           # Clone target repo
-          git clone https://x-access-token:${GH_TOKEN}@github.com/${TARGET_REPO}.git target-repo
-          cd target-repo
+          git clone https://x-access-token:${{ secrets.PAT_FOR_PUSH }}@github.com/roiser/madgraph4gpu-generated-processes.git
+          #git clone https://x-access-token:${GH_TOKEN}@github.com/${TARGET_REPO}.git target-repo
+          cd madgraph4gpu-generated-processes
+
+          echo git status
+          git status
           
           # Create branch based on PR number
           BRANCH_NAME="codegen-pr-${{ github.event.pull_request.number }}"
           git checkout -b ${BRANCH_NAME}
           
           # Copy generated files (adjust paths as needed)
-          cp -r ../generated-output/* .
-          
+          cp -r ${GITHUB_WORKSPACE}/PROC_pp_ttx .
+
           # Commit and push
           git add .
           git commit -m "Code generated from PR #${{ github.event.pull_request.number }}" \
                      -m "Source PR: ${{ github.event.pull_request.html_url }}"
+
+          echo git status
+          git status
+
+          echo pwd
+          pwd
+
+          echo git remote -v
+          git remote -v
+
           git push origin ${BRANCH_NAME}
           
           echo "✅ Pushed to ${TARGET_REPO} on branch ${BRANCH_NAME}"

From 17c9d4dc6a78a7967e3f3b50bccbceccadc50ead Mon Sep 17 00:00:00 2001
From: Stefan Roiser <stefan.roiser@cern.ch>
Date: Mon, 12 Jan 2026 15:59:06 +0100
Subject: [PATCH 06/27] move to new token

remove persist credentials

change pat name

add ls

remove if, single line commit

simplify ci

pat in local repo

use PAT as a token
---
 .github/workflows/mg5_codegen.yml | 61 ++++++++++++++++++-------------
 1 file changed, 35 insertions(+), 26 deletions(-)

diff --git a/.github/workflows/mg5_codegen.yml b/.github/workflows/mg5_codegen.yml
index ef28ac49d8..0d72e49324 100644
--- a/.github/workflows/mg5_codegen.yml
+++ b/.github/workflows/mg5_codegen.yml
@@ -25,10 +25,11 @@ jobs:
         run: |
           cd PROC_pp_ttx
           # Find all generated C/C++ files (adjust pattern as needed)
-          find . -type f \( -name "*.c" -o -name "*.cpp" -o -name "*.h" -o -name "*.hpp" \) > files.txt
+          find . -type f \( -name "*.cc" -o -name "*.h" \) > files.txt
           
           # Run clang-format check
-          if clang-format --dry-run --Werror $(cat files.txt) 2>&1 | tee format-output.txt; then
+          if find . -name '*.cc' -o -name '*.h' | xargs -n1 clang-format -style=file -assume-filename={} {} | diff -u {} -; then
+          #if clang-format --dry-run --Werror $(cat files.txt) 2>&1 | tee format-output.txt; then
             echo "format_ok=true" >> $GITHUB_OUTPUT
             echo "✅ Code is properly formatted"
           else
@@ -41,49 +42,57 @@ jobs:
           fi
       
       - name: Commit to target repository
-        if: steps.format-check.outputs.format_ok == 'true'
+        # if: steps.format-check.outputs.format_ok == 'true'
         env:
           TARGET_REPO: roiser/madgraph4gpu-generated-processes
           GH_TOKEN: ${{ secrets.MG4GPU_GEN_PAT }} ## ${{ secrets.GITHUB_TOKEN }}  # Or use a PAT: secrets.TARGET_REPO_PAT
-          persist-credentials: true
+          #persist-credentials: true
         run: |
-          cd ..
           # Configure git
           git config --global user.name "github-actions"
           git config --global user.email "github-actions@users.noreply.github.com"
           
           # Clone target repo
-          git clone https://x-access-token:${{ secrets.PAT_FOR_PUSH }}@github.com/roiser/madgraph4gpu-generated-processes.git
-          #git clone https://x-access-token:${GH_TOKEN}@github.com/${TARGET_REPO}.git target-repo
+          #git clone https://x-access-token:${{ secrets.PAT_FOR_PUSH }}@github.com/roiser/madgraph4gpu-generated-processes.git
+          git clone https://x-access-token:${GH_TOKEN}@github.com/${TARGET_REPO}.git
           cd madgraph4gpu-generated-processes
 
-          echo git status
-          git status
+          touch foo
+          git add foo
+          git commit -m "Initial commit" -a 
+          git push origin main
+
+          # echo ls
+          # ls
+
+          # echo git status
+          # git status
           
-          # Create branch based on PR number
-          BRANCH_NAME="codegen-pr-${{ github.event.pull_request.number }}"
-          git checkout -b ${BRANCH_NAME}
+          # # Create branch based on PR number
+          # BRANCH_NAME="codegen-pr-${{ github.event.pull_request.number }}"
+          # git checkout -b ${BRANCH_NAME}
           
-          # Copy generated files (adjust paths as needed)
-          cp -r ${GITHUB_WORKSPACE}/PROC_pp_ttx .
+          # # Copy generated files (adjust paths as needed)
+          # cp -r ${GITHUB_WORKSPACE}/PROC_pp_ttx .
 
-          # Commit and push
-          git add .
-          git commit -m "Code generated from PR #${{ github.event.pull_request.number }}" \
-                     -m "Source PR: ${{ github.event.pull_request.html_url }}"
+          # # Commit and push
+          # git add .
+          # git commit -m "Code generated from PR #${{ github.event.pull_request.number }}" 
+          # # \
+          # #           -m "Source PR: ${{ github.event.pull_request.html_url }}"
 
-          echo git status
-          git status
+          # echo git status
+          # git status
 
-          echo pwd
-          pwd
+          # echo pwd
+          # pwd
 
-          echo git remote -v
-          git remote -v
+          # echo git remote -v
+          # git remote -v
 
-          git push origin ${BRANCH_NAME}
+          # git push origin ${BRANCH_NAME}
           
-          echo "✅ Pushed to ${TARGET_REPO} on branch ${BRANCH_NAME}"
+          # echo "✅ Pushed to ${TARGET_REPO} on branch ${BRANCH_NAME}"
       
       - name: Comment on PR with format issues
         if: steps.format-check.outputs.format_ok == 'false'

From 753368dd97ebad71f682e82b63fc7ac225ee2c7e Mon Sep 17 00:00:00 2001
From: Stefan Roiser <stefan.roiser@cern.ch>
Date: Mon, 12 Jan 2026 17:42:36 +0100
Subject: [PATCH 07/27] fix clang format

---
 .github/workflows/mg5_codegen.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/mg5_codegen.yml b/.github/workflows/mg5_codegen.yml
index 0d72e49324..cc671d24ce 100644
--- a/.github/workflows/mg5_codegen.yml
+++ b/.github/workflows/mg5_codegen.yml
@@ -28,8 +28,8 @@ jobs:
           find . -type f \( -name "*.cc" -o -name "*.h" \) > files.txt
           
           # Run clang-format check
-          if find . -name '*.cc' -o -name '*.h' | xargs -n1 clang-format -style=file -assume-filename={} {} | diff -u {} -; then
-          #if clang-format --dry-run --Werror $(cat files.txt) 2>&1 | tee format-output.txt; then
+          #if find . -name '*.cc' -o -name '*.h' | xargs -n1 clang-format -style=file -assume-filename={} {} | diff -u {} -; then
+          if clang-format --dry-run --Werror $(cat files.txt) 2>&1 | tee format-output.txt; then
             echo "format_ok=true" >> $GITHUB_OUTPUT
             echo "✅ Code is properly formatted"
           else

From cb08b11bfb97e46f967b3a218e125028bf0601b1 Mon Sep 17 00:00:00 2001
From: Stefan Roiser <stefan.roiser@cern.ch>
Date: Mon, 12 Jan 2026 17:45:52 +0100
Subject: [PATCH 08/27] fix commit to remote repo

---
 .github/workflows/mg5_codegen.yml | 47 ++++++++-----------------------
 1 file changed, 12 insertions(+), 35 deletions(-)

diff --git a/.github/workflows/mg5_codegen.yml b/.github/workflows/mg5_codegen.yml
index cc671d24ce..ac0d7e992d 100644
--- a/.github/workflows/mg5_codegen.yml
+++ b/.github/workflows/mg5_codegen.yml
@@ -45,54 +45,31 @@ jobs:
         # if: steps.format-check.outputs.format_ok == 'true'
         env:
           TARGET_REPO: roiser/madgraph4gpu-generated-processes
-          GH_TOKEN: ${{ secrets.MG4GPU_GEN_PAT }} ## ${{ secrets.GITHUB_TOKEN }}  # Or use a PAT: secrets.TARGET_REPO_PAT
-          #persist-credentials: true
+          GH_TOKEN: ${{ secrets.MG4GPU_GEN_PAT }} 
         run: |
           # Configure git
           git config --global user.name "github-actions"
           git config --global user.email "github-actions@users.noreply.github.com"
           
           # Clone target repo
-          #git clone https://x-access-token:${{ secrets.PAT_FOR_PUSH }}@github.com/roiser/madgraph4gpu-generated-processes.git
           git clone https://x-access-token:${GH_TOKEN}@github.com/${TARGET_REPO}.git
           cd madgraph4gpu-generated-processes
-
-          touch foo
-          git add foo
-          git commit -m "Initial commit" -a 
-          git push origin main
-
-          # echo ls
-          # ls
-
-          # echo git status
-          # git status
           
-          # # Create branch based on PR number
-          # BRANCH_NAME="codegen-pr-${{ github.event.pull_request.number }}"
-          # git checkout -b ${BRANCH_NAME}
+          # Create branch based on PR number
+          BRANCH_NAME="codegen-pr-${{ github.event.pull_request.number }}"
+          git checkout -b ${BRANCH_NAME}
           
-          # # Copy generated files (adjust paths as needed)
-          # cp -r ${GITHUB_WORKSPACE}/PROC_pp_ttx .
-
-          # # Commit and push
-          # git add .
-          # git commit -m "Code generated from PR #${{ github.event.pull_request.number }}" 
-          # # \
-          # #           -m "Source PR: ${{ github.event.pull_request.html_url }}"
-
-          # echo git status
-          # git status
-
-          # echo pwd
-          # pwd
+          # Copy generated files (adjust paths as needed)
+          cp -r ${GITHUB_WORKSPACE}/PROC_pp_ttx .
 
-          # echo git remote -v
-          # git remote -v
+          # Commit and push
+          git add .
+          git commit -m "Code generated from PR #${{ github.event.pull_request.number }}" \
+                     -m "Source PR: ${{ github.event.pull_request.html_url }}"
 
-          # git push origin ${BRANCH_NAME}
+          git push origin ${BRANCH_NAME}
           
-          # echo "✅ Pushed to ${TARGET_REPO} on branch ${BRANCH_NAME}"
+          echo "✅ Pushed to ${TARGET_REPO} on branch ${BRANCH_NAME}"
       
       - name: Comment on PR with format issues
         if: steps.format-check.outputs.format_ok == 'false'

From 46f4864a2dd1561dc1663db05cc30460db761899 Mon Sep 17 00:00:00 2001
From: Stefan Roiser <stefan.roiser@cern.ch>
Date: Wed, 14 Jan 2026 10:36:02 +0100
Subject: [PATCH 09/27] formatting script

---
 .github/workflows/check-formatting.sh | 43 +++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)
 create mode 100755 .github/workflows/check-formatting.sh

diff --git a/.github/workflows/check-formatting.sh b/.github/workflows/check-formatting.sh
new file mode 100755
index 0000000000..e1b40c6f80
--- /dev/null
+++ b/.github/workflows/check-formatting.sh
@@ -0,0 +1,43 @@
+if [ ! -d "src" ] && [ ! -d "SubProcesses" ]; then
+  echo "Error: Neither 'src' nor 'SubProcesses' directory exists, script needs to be run from the root directory of a generated process" >&2
+  exit 255
+fi
+
+count=0
+total=0
+files_needing_format=()
+patch_file="format-changes.patch"
+
+# clean patch file if it exists
+> "$patch_file"
+
+echo ""
+echo "Checking formatting with clang-format..."
+echo ""
+
+while IFS= read -r file; do
+  ((total++))
+  if ! clang-format --dry-run --Werror "$file" 2>/dev/null; then
+    echo "=== $file needs formatting ==="
+    clang-format "$file" | diff -u "$file" - >> "$patch_file"
+    echo "" >> "$patch_file"
+    ((count++))
+    files_needing_format+=("$file")
+  fi
+done < <(find src SubProcesses -type f \( -name "*.cc" -o -name "*.h" \) 2>/dev/null)
+
+
+echo ""
+echo "Files needing formatting: $count"
+echo "Total files checked: $total"
+
+if [ $count -gt 0 ]; then
+  echo "Detailed patch saved to '$patch_file'"
+  echo "If this scrpt is run in the CI workflow, detailed patches are provided as comment on the PR." 
+else
+  echo "All files are properly formatted."
+  rm "$patch_file"  
+fi
+echo ""
+
+exit $count

From 50e442a85e56a71176934ae77099230e35a7b2b7 Mon Sep 17 00:00:00 2001
From: Stefan Roiser <stefan.roiser@cern.ch>
Date: Wed, 14 Jan 2026 10:36:34 +0100
Subject: [PATCH 10/27] ignore test process directories

---
 .gitignore | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/.gitignore b/.gitignore
index a8ade725e6..a617fdaf7b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -9,6 +9,9 @@ py.py
 build.*
 .build.*
 
+#=== testing ===
+test/processes/PROC_*
+
 #=== Profiling ===
 nsight_logs
 profile_*

From 6b86a94df7958986d3ebfebb017d7308a10a2bf4 Mon Sep 17 00:00:00 2001
From: Stefan Roiser <stefan.roiser@cern.ch>
Date: Wed, 14 Jan 2026 10:37:12 +0100
Subject: [PATCH 11/27] change to script for formatting check and more details
 if fails

fix syntax, not bash

syntax error

change to script for formatting check and more details if fails
---
 .github/workflows/mg5_codegen.yml | 59 ++++++++++++++-----------------
 1 file changed, 27 insertions(+), 32 deletions(-)

diff --git a/.github/workflows/mg5_codegen.yml b/.github/workflows/mg5_codegen.yml
index ac0d7e992d..65041d2459 100644
--- a/.github/workflows/mg5_codegen.yml
+++ b/.github/workflows/mg5_codegen.yml
@@ -1,4 +1,4 @@
-name: Code Generator CI
+name: Generate code, check format and push to generated processes repo
 
 on:
   pull_request:
@@ -21,28 +21,21 @@ jobs:
           ./MG5aMC/mg5amcnlo/bin/mg5_aMC test/processes/pp_ttx/output.mg5
       
       - name: Check code format with clang-format
-        id: format-check
+        id: clang-format-check
         run: |
+          chmod +x .github/workflows/check-formatting.sh
           cd PROC_pp_ttx
-          # Find all generated C/C++ files (adjust pattern as needed)
-          find . -type f \( -name "*.cc" -o -name "*.h" \) > files.txt
-          
-          # Run clang-format check
-          #if find . -name '*.cc' -o -name '*.h' | xargs -n1 clang-format -style=file -assume-filename={} {} | diff -u {} -; then
-          if clang-format --dry-run --Werror $(cat files.txt) 2>&1 | tee format-output.txt; then
-            echo "format_ok=true" >> $GITHUB_OUTPUT
-            echo "✅ Code is properly formatted"
+          $GITHUB_WORKSPACE/.github/workflows/check-formatting.sh
+          echo "format_exit=$?" >> $GITHUB_OUTPUT
+
+          if [ "$format_exit" -eq 0 ]; then
+            echo "✅ clang-format check passed."
           else
-            echo "format_ok=false" >> $GITHUB_OUTPUT
-            echo "❌ Code needs formatting"
-            
-            # Generate the diff for needed changes
-            clang-format -i $(cat files.txt)
-            git diff > format-changes.patch
+            echo "❌ clang-format check failed."
           fi
       
       - name: Commit to target repository
-        # if: steps.format-check.outputs.format_ok == 'true'
+        if: "${{ steps.clang-format-check.outputs.format_exit == '0'}}"
         env:
           TARGET_REPO: roiser/madgraph4gpu-generated-processes
           GH_TOKEN: ${{ secrets.MG4GPU_GEN_PAT }} 
@@ -71,8 +64,17 @@ jobs:
           
           echo "✅ Pushed to ${TARGET_REPO} on branch ${BRANCH_NAME}"
       
+      - name: Read patch file
+        if: "${{ steps.clang-format-check.outputs.format_exit == '0' }}"
+        run: |
+          {
+            echo "patch_file_content<<EOF"
+            cat format-changes.patch
+            echo "EOF"
+          } >> $GITHUB_OUTPUT
+
       - name: Comment on PR with format issues
-        if: steps.format-check.outputs.format_ok == 'false'
+        if: "${{ steps.clang-format-check.outputs.format_exit == '0' }}"
         uses: actions/github-script@v7
         with:
           script: |
@@ -81,26 +83,19 @@ jobs:
             
             const comment = `## ❌ Code Format Check Failed
             
-            The generated code does not conform to clang-format rules.
-            
-            <details>
-            <summary>Required formatting changes</summary>
-            
-            \`\`\`diff
-            ${patch}
-            \`\`\`
-            
-            </details>
-            
-            Please update your code generator to produce properly formatted code.`;
+            The generated code does not conform to clang-format rules. 
+
+            Please update your code generator to produce properly formatted code.
+            ${{steps.clang-format-check.outputs.format_exit}} files need formatting.
+            See attached patch for details:`;
             
             github.rest.issues.createComment({
               owner: context.repo.owner,
               repo: context.repo.repo,
               issue_number: context.issue.number,
-              body: comment
+              body: `${comment} \n ${{steps.clang-format-check.outputs.patch_file_content}}`
             });
       
       - name: Fail if format check failed
-        if: steps.format-check.outputs.format_ok == 'false'
+        if: "${{ steps.clang-format-check.outputs.format_exit == '0' }}"
         run: exit 1

From c2416f917dc2a9f5e009e9e86631554680e3eac9 Mon Sep 17 00:00:00 2001
From: Stefan Roiser <stefan.roiser@cern.ch>
Date: Wed, 14 Jan 2026 11:17:58 +0100
Subject: [PATCH 12/27] continue if the format check returns non 0

check value

rebase

continue if the format check returns non 0
---
 .github/workflows/mg5_codegen.yml | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/.github/workflows/mg5_codegen.yml b/.github/workflows/mg5_codegen.yml
index 65041d2459..1312d8b8f2 100644
--- a/.github/workflows/mg5_codegen.yml
+++ b/.github/workflows/mg5_codegen.yml
@@ -33,9 +33,10 @@ jobs:
           else
             echo "❌ clang-format check failed."
           fi
+        continue-on-error: true
       
       - name: Commit to target repository
-        if: "${{ steps.clang-format-check.outputs.format_exit == '0'}}"
+        if: "${{ steps.clang-format-check.outputs.format_exit == 0}}"
         env:
           TARGET_REPO: roiser/madgraph4gpu-generated-processes
           GH_TOKEN: ${{ secrets.MG4GPU_GEN_PAT }} 
@@ -60,12 +61,14 @@ jobs:
           git commit -m "Code generated from PR #${{ github.event.pull_request.number }}" \
                      -m "Source PR: ${{ github.event.pull_request.html_url }}"
 
+          git fetch origin
+          git rebase origin/${BRANCH_NAME}
           git push origin ${BRANCH_NAME}
           
           echo "✅ Pushed to ${TARGET_REPO} on branch ${BRANCH_NAME}"
       
       - name: Read patch file
-        if: "${{ steps.clang-format-check.outputs.format_exit == '0' }}"
+        if: "${{ steps.clang-format-check.outputs.format_exit != 0 }}"
         run: |
           {
             echo "patch_file_content<<EOF"
@@ -74,7 +77,7 @@ jobs:
           } >> $GITHUB_OUTPUT
 
       - name: Comment on PR with format issues
-        if: "${{ steps.clang-format-check.outputs.format_exit == '0' }}"
+        if: "${{ steps.clang-format-check.outputs.format_exit != 0 }}"
         uses: actions/github-script@v7
         with:
           script: |
@@ -97,5 +100,5 @@ jobs:
             });
       
       - name: Fail if format check failed
-        if: "${{ steps.clang-format-check.outputs.format_exit == '0' }}"
+        if: "${{ steps.clang-format-check.outputs.format_exit != 0 }}"
         run: exit 1

From d6c9c3b1e61dbcef0985b5e57627e21a3e7f5492 Mon Sep 17 00:00:00 2001
From: Stefan Roiser <stefan.roiser@cern.ch>
Date: Wed, 14 Jan 2026 11:32:33 +0100
Subject: [PATCH 13/27] push force

---
 .github/workflows/mg5_codegen.yml | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/.github/workflows/mg5_codegen.yml b/.github/workflows/mg5_codegen.yml
index 1312d8b8f2..871e019648 100644
--- a/.github/workflows/mg5_codegen.yml
+++ b/.github/workflows/mg5_codegen.yml
@@ -61,9 +61,7 @@ jobs:
           git commit -m "Code generated from PR #${{ github.event.pull_request.number }}" \
                      -m "Source PR: ${{ github.event.pull_request.html_url }}"
 
-          git fetch origin
-          git rebase origin/${BRANCH_NAME}
-          git push origin ${BRANCH_NAME}
+          git push -f origin ${BRANCH_NAME}
           
           echo "✅ Pushed to ${TARGET_REPO} on branch ${BRANCH_NAME}"
       

From c8ba390f2fe656066764e154ac85fd1aaf2772c3 Mon Sep 17 00:00:00 2001
From: Stefan Roiser <stefan.roiser@cern.ch>
Date: Wed, 14 Jan 2026 11:44:11 +0100
Subject: [PATCH 14/27] move away from return value

fix directory

change if statement

add spaces

fix java script

read file inside the script

verbose text, remove newline, check for 8 failures

move back to 0 for the check

move away from return value for code checking script
---
 .github/workflows/check-formatting.sh |  4 +++-
 .github/workflows/mg5_codegen.yml     | 31 ++++++++++++++++-----------
 2 files changed, 21 insertions(+), 14 deletions(-)

diff --git a/.github/workflows/check-formatting.sh b/.github/workflows/check-formatting.sh
index e1b40c6f80..0c2effbbb9 100755
--- a/.github/workflows/check-formatting.sh
+++ b/.github/workflows/check-formatting.sh
@@ -7,9 +7,11 @@ count=0
 total=0
 files_needing_format=()
 patch_file="format-changes.patch"
+num_file="files2format"
 
 # clean patch file if it exists
 > "$patch_file"
+> "$num_file"
 
 echo ""
 echo "Checking formatting with clang-format..."
@@ -40,4 +42,4 @@ else
 fi
 echo ""
 
-exit $count
+echo $count | tr -d \\n >> $num_file
diff --git a/.github/workflows/mg5_codegen.yml b/.github/workflows/mg5_codegen.yml
index 871e019648..65b568b50f 100644
--- a/.github/workflows/mg5_codegen.yml
+++ b/.github/workflows/mg5_codegen.yml
@@ -26,17 +26,17 @@ jobs:
           chmod +x .github/workflows/check-formatting.sh
           cd PROC_pp_ttx
           $GITHUB_WORKSPACE/.github/workflows/check-formatting.sh
-          echo "format_exit=$?" >> $GITHUB_OUTPUT
+          files2format=$(cat files2format)
+          echo "files2format=$files2format" >> $GITHUB_OUTPUT
 
-          if [ "$format_exit" -eq 0 ]; then
+          if [ "$files2format" -eq 0 ]; then
             echo "✅ clang-format check passed."
           else
             echo "❌ clang-format check failed."
           fi
-        continue-on-error: true
       
       - name: Commit to target repository
-        if: "${{ steps.clang-format-check.outputs.format_exit == 0}}"
+        if: ${{ steps.clang-format-check.outputs.files2format == '0' }}
         env:
           TARGET_REPO: roiser/madgraph4gpu-generated-processes
           GH_TOKEN: ${{ secrets.MG4GPU_GEN_PAT }} 
@@ -66,37 +66,42 @@ jobs:
           echo "✅ Pushed to ${TARGET_REPO} on branch ${BRANCH_NAME}"
       
       - name: Read patch file
-        if: "${{ steps.clang-format-check.outputs.format_exit != 0 }}"
+        if: ${{ steps.clang-format-check.outputs.files2format != '0' }}
         run: |
           {
             echo "patch_file_content<<EOF"
-            cat format-changes.patch
+            cat PROC_pp_ttx/format-changes.patch
             echo "EOF"
           } >> $GITHUB_OUTPUT
 
       - name: Comment on PR with format issues
-        if: "${{ steps.clang-format-check.outputs.format_exit != 0 }}"
+        if: ${{ steps.clang-format-check.outputs.files2format != '0' }}
         uses: actions/github-script@v7
+        env:
+          FILES2FORMAT: ${{ steps.clang-format-check.outputs.files2format }}
+          PROC_DIR: PROC_pp_ttx
         with:
           script: |
+
             const fs = require('fs');
-            const patch = fs.readFileSync('format-changes.patch', 'utf8');
-            
+            const filesToFormat = parseInt(process.env.FILES2FORMAT);
+            const patchContent = fs.readFileSync(`${process.env.PROC_DIR}/format-changes.patch`, 'utf8');
+
             const comment = `## ❌ Code Format Check Failed
             
             The generated code does not conform to clang-format rules. 
 
             Please update your code generator to produce properly formatted code.
-            ${{steps.clang-format-check.outputs.format_exit}} files need formatting.
+            ${filesToFormat} files need formatting.
             See attached patch for details:`;
             
             github.rest.issues.createComment({
               owner: context.repo.owner,
               repo: context.repo.repo,
               issue_number: context.issue.number,
-              body: `${comment} \n ${{steps.clang-format-check.outputs.patch_file_content}}`
+              body: `${comment} \n \`\`\` \n ${patchContent} \n \`\`\``
             });
-      
+
       - name: Fail if format check failed
-        if: "${{ steps.clang-format-check.outputs.format_exit != 0 }}"
+        if: ${{ steps.clang-format-check.outputs.files2format != '0' }}
         run: exit 1

From 7c2c913471dfc85726ce17f3e53d93ec38cb8582 Mon Sep 17 00:00:00 2001
From: Stefan Roiser <stefan.roiser@cern.ch>
Date: Wed, 14 Jan 2026 15:29:52 +0100
Subject: [PATCH 15/27] introduce gh matrix

more debug info

introduce gh ci matrix
---
 .github/workflows/mg5_codegen.yml | 23 ++++++++++++++++++-----
 1 file changed, 18 insertions(+), 5 deletions(-)

diff --git a/.github/workflows/mg5_codegen.yml b/.github/workflows/mg5_codegen.yml
index 65b568b50f..ad62cf6072 100644
--- a/.github/workflows/mg5_codegen.yml
+++ b/.github/workflows/mg5_codegen.yml
@@ -7,6 +7,15 @@ on:
 jobs:
   generate-and-check:
     runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        process: [pp_ttx, pp_ttxj]
+        backend: [scalar, avx2, avx512, cuda, hip]
+
+    env:
+      PROC_DIR: PROC_${{ matrix.process }}
+      BACKEND : ${{ matrix.backend }}
     
     steps:
       - name: Checkout codegen repo
@@ -18,13 +27,13 @@ jobs:
       - name: Run code generator
         run: |
           if [ ! -e MG5aMC/mg5amcnlo/PLUGIN/CUDACPP_SA_OUTPUT ] ; then pushd MG5aMC/mg5amcnlo/PLUGIN/ && ln -s ../../../epochX/cudacpp/CODEGEN/PLUGIN/CUDACPP_SA_OUTPUT && popd ; fi
-          ./MG5aMC/mg5amcnlo/bin/mg5_aMC test/processes/pp_ttx/output.mg5
+          ./MG5aMC/mg5amcnlo/bin/mg5_aMC test/processes/${{ matrix.process }}/output.mg5
       
       - name: Check code format with clang-format
         id: clang-format-check
         run: |
           chmod +x .github/workflows/check-formatting.sh
-          cd PROC_pp_ttx
+          cd ${{ env.PROC_DIR }}
           $GITHUB_WORKSPACE/.github/workflows/check-formatting.sh
           files2format=$(cat files2format)
           echo "files2format=$files2format" >> $GITHUB_OUTPUT
@@ -54,7 +63,7 @@ jobs:
           git checkout -b ${BRANCH_NAME}
           
           # Copy generated files (adjust paths as needed)
-          cp -r ${GITHUB_WORKSPACE}/PROC_pp_ttx .
+          cp -r ${GITHUB_WORKSPACE}/${{ env.PROC_DIR }} .
 
           # Commit and push
           git add .
@@ -70,7 +79,7 @@ jobs:
         run: |
           {
             echo "patch_file_content<<EOF"
-            cat PROC_pp_ttx/format-changes.patch
+            cat ${{ env.PROC_DIR }}/format-changes.patch
             echo "EOF"
           } >> $GITHUB_OUTPUT
 
@@ -79,7 +88,7 @@ jobs:
         uses: actions/github-script@v7
         env:
           FILES2FORMAT: ${{ steps.clang-format-check.outputs.files2format }}
-          PROC_DIR: PROC_pp_ttx
+#          PROC_DIR: ${{ env.PROC_DIR }}
         with:
           script: |
 
@@ -93,6 +102,10 @@ jobs:
 
             Please update your code generator to produce properly formatted code.
             ${filesToFormat} files need formatting.
+            
+            Note: The CI is setup so it fails early, if formatting issues are detected for any of the processes. 
+                  The report below is for process **${process.env.PROC_DIR}** with backend **${process.env.BACKEND}**.
+            
             See attached patch for details:`;
             
             github.rest.issues.createComment({

From bd07d8082131c8b7debbdaef6855405613351386 Mon Sep 17 00:00:00 2001
From: Stefan Roiser <stefan.roiser@cern.ch>
Date: Wed, 14 Jan 2026 15:40:41 +0100
Subject: [PATCH 16/27] add second process dir

---
 test/processes/pp_ttxj/launch.mg5 | 6 ++++++
 test/processes/pp_ttxj/output.mg5 | 2 ++
 2 files changed, 8 insertions(+)
 create mode 100644 test/processes/pp_ttxj/launch.mg5
 create mode 100644 test/processes/pp_ttxj/output.mg5

diff --git a/test/processes/pp_ttxj/launch.mg5 b/test/processes/pp_ttxj/launch.mg5
new file mode 100644
index 0000000000..6be9aa7461
--- /dev/null
+++ b/test/processes/pp_ttxj/launch.mg5
@@ -0,0 +1,6 @@
+launch PROC_pp_ttxj
+set vector_size 32
+set nevents 25k
+set sde_strategy 1
+set gridpack True
+
diff --git a/test/processes/pp_ttxj/output.mg5 b/test/processes/pp_ttxj/output.mg5
new file mode 100644
index 0000000000..1a934c01e6
--- /dev/null
+++ b/test/processes/pp_ttxj/output.mg5
@@ -0,0 +1,2 @@
+generate p p > t t~ j
+output madevent_simd PROC_pp_ttxj

From b8846e11de5c01a1ce05149971d77b7a102ca847 Mon Sep 17 00:00:00 2001
From: Stefan Roiser <stefan.roiser@cern.ch>
Date: Fri, 16 Jan 2026 08:39:04 +0100
Subject: [PATCH 17/27] test github app

generate access token

run only one config

fix typo

indentation error

simplify token gen

remove installation-id

add repo name

test github app
---
 .github/workflows/mg5_codegen.yml | 23 +++++++++++++++++------
 1 file changed, 17 insertions(+), 6 deletions(-)

diff --git a/.github/workflows/mg5_codegen.yml b/.github/workflows/mg5_codegen.yml
index ad62cf6072..96dd093740 100644
--- a/.github/workflows/mg5_codegen.yml
+++ b/.github/workflows/mg5_codegen.yml
@@ -10,8 +10,10 @@ jobs:
 
     strategy:
       matrix:
-        process: [pp_ttx, pp_ttxj]
-        backend: [scalar, avx2, avx512, cuda, hip]
+#        process: [pp_ttx, pp_ttxj]
+#        backend: [scalar, avx2, avx512, cuda, hip]
+        process: [pp_ttx]
+        backend: [scalar]
 
     env:
       PROC_DIR: PROC_${{ matrix.process }}
@@ -43,19 +45,28 @@ jobs:
           else
             echo "❌ clang-format check failed."
           fi
-      
+
+      - name: Generate GitHub App token
+        id: app-token
+        uses: actions/create-github-app-token@v1
+        with:
+          app-id: ${{ secrets.GH_APP_ID }}
+          private-key: ${{ secrets.GH_APP_PRIVATE_KEY }}
+          repositories: madgraph4gpu-generated-processes
+#          installation-id: ${{ secrets.GH_APP_INSTALLATION_ID }}
+
       - name: Commit to target repository
-        if: ${{ steps.clang-format-check.outputs.files2format == '0' }}
+        if: ${{ steps.clang-format-check.outputs.files2format == '8' }}
         env:
           TARGET_REPO: roiser/madgraph4gpu-generated-processes
-          GH_TOKEN: ${{ secrets.MG4GPU_GEN_PAT }} 
         run: |
           # Configure git
+
           git config --global user.name "github-actions"
           git config --global user.email "github-actions@users.noreply.github.com"
           
           # Clone target repo
-          git clone https://x-access-token:${GH_TOKEN}@github.com/${TARGET_REPO}.git
+          git clone https://x-access-token:${{ steps.app-token.outputs.token }}@github.com/${TARGET_REPO}.git
           cd madgraph4gpu-generated-processes
           
           # Create branch based on PR number

From 12aac6595137fb34c8c5981ab152d12043f13e19 Mon Sep 17 00:00:00 2001
From: Stefan Roiser <stefan.roiser@cern.ch>
Date: Fri, 16 Jan 2026 11:02:55 +0100
Subject: [PATCH 18/27] empty


From b8a92a6f4a9fca11ef1dd9e7f835ac91bc59ddea Mon Sep 17 00:00:00 2001
From: Stefan Roiser <stefan.roiser@cern.ch>
Date: Fri, 16 Jan 2026 13:34:31 +0100
Subject: [PATCH 19/27] gather data for readme

update remote readme

gather data for readme
---
 .github/workflows/mg5_codegen.yml  | 37 +++++++++++++--
 .github/workflows/update_readme.py | 75 ++++++++++++++++++++++++++++++
 2 files changed, 108 insertions(+), 4 deletions(-)
 create mode 100644 .github/workflows/update_readme.py

diff --git a/.github/workflows/mg5_codegen.yml b/.github/workflows/mg5_codegen.yml
index 96dd093740..dd19d9ea8f 100644
--- a/.github/workflows/mg5_codegen.yml
+++ b/.github/workflows/mg5_codegen.yml
@@ -34,7 +34,7 @@ jobs:
       - name: Check code format with clang-format
         id: clang-format-check
         run: |
-          chmod +x .github/workflows/check-formatting.sh
+          chmod +x $GITHUB_WORKSPACE/.github/workflows/check-formatting.sh
           cd ${{ env.PROC_DIR }}
           $GITHUB_WORKSPACE/.github/workflows/check-formatting.sh
           files2format=$(cat files2format)
@@ -53,10 +53,9 @@ jobs:
           app-id: ${{ secrets.GH_APP_ID }}
           private-key: ${{ secrets.GH_APP_PRIVATE_KEY }}
           repositories: madgraph4gpu-generated-processes
-#          installation-id: ${{ secrets.GH_APP_INSTALLATION_ID }}
 
       - name: Commit to target repository
-        if: ${{ steps.clang-format-check.outputs.files2format == '8' }}
+        if: ${{ steps.clang-format-check.outputs.files2format == '0' }}
         env:
           TARGET_REPO: roiser/madgraph4gpu-generated-processes
         run: |
@@ -94,12 +93,42 @@ jobs:
             echo "EOF"
           } >> $GITHUB_OUTPUT
 
+      - name: Update README.md
+        if: ${{ steps.clang-format-check.outputs.files2format == '8' }}
+        run: |
+          echo "title: ${{ github.event.pull_request.title }}"
+          echo "url: ${{ github.event.pull_request.html_url }}"
+          echo "number: ${{ github.event.pull_request.number }}"
+          echo "updated_at: ${{ github.event.pull_request.updated_at }}"
+          echo "user: ${{ github.event.pull_request.user.login }}"
+          echo "draft: ${{ github.event.pull_request.draft }}"
+          echo "created_at: ${{ github.event.pull_request.created_at }}"
+          echo "commits: ${{ github.event.pull_request.commits }}"
+
+          cd $GITHUB_WORKSPACE/madgraph4gpu-generated-processes
+          git checkout main
+
+          python3 $GITHUB_WORKSPACE/.github/workflows/update_readme.py \
+            --title "${{ github.event.pull_request.title }}" \
+            --url "${{ github.event.pull_request.html_url }}" \
+            --pr_num "${{ github.event.pull_request.number }}" \
+            --created "${{ github.event.pull_request.created_at }}" \
+            --last_updated "${{ github.event.pull_request.updated_at }}" \
+            --wip "${{ github.event.pull_request.draft }}" \
+            --num_commits "${{ github.event.pull_request.commits }}" \
+            --author "${{ github.event.pull_request.user.login }}"
+
+          git add .
+          git commit -m "Update README for PR #${{ github.event.pull_request.number }}"
+          git push -f origin main
+          
+          echo "✅ Pushed to ${TARGET_REPO} on branch main"
+
       - name: Comment on PR with format issues
         if: ${{ steps.clang-format-check.outputs.files2format != '0' }}
         uses: actions/github-script@v7
         env:
           FILES2FORMAT: ${{ steps.clang-format-check.outputs.files2format }}
-#          PROC_DIR: ${{ env.PROC_DIR }}
         with:
           script: |
 
diff --git a/.github/workflows/update_readme.py b/.github/workflows/update_readme.py
new file mode 100644
index 0000000000..6918442ee7
--- /dev/null
+++ b/.github/workflows/update_readme.py
@@ -0,0 +1,75 @@
+#!/usr/bin/env python3
+
+import json
+
+class UpdateReadme:
+    def __init__(self, title, url, pr_num, created, last_updated, wip, num_commits, author):
+        self.title = title
+        self.url = url
+        self.pr_num = pr_num
+        self.created = created
+        self.last_updated = last_updated
+        self.wip = wip
+        self.num_commits = num_commits
+        self.author = author
+
+    def update_json(self):
+        fh = open('readme_data.json', 'r')
+        data = json.load(fh)
+        fh.close()
+
+        if self.pr_num not in data:
+            new_entry = {
+                "title": self.title,
+                "url": self.url,
+                "created": self.created,
+                "last_updated": self.last_updated,
+                "wip": self.wip,
+                "num_commits": self.num_commits,
+                "author": self.author
+                }
+            data[self.pr_num] = new_entry
+        else:
+            data[self.pr_num]['last_updated'] = self.last_updated
+            data[self.pr_num]['wip'] = self.wip
+            data[self.pr_num]['num_commits'] = self.num_commits
+            data[self.pr_num]['title'] = self.title
+
+        fh = open('readme_data.json', 'w')
+        json.dump(data, fh, indent=4)
+        fh.close()
+
+    def write_readme(self):
+        fh = open('readme_data.json', 'r')
+        data = json.load(fh)
+        fh.close()
+
+        sorted_prs = sorted(data.items(), key=lambda x: x[1]['last_updated'], reverse=True)
+
+        with open('README.md', 'w') as fh:
+            fh.write("# Pull Request Summary\n\n")
+            fh.write("| PR Number | Title | Author | Created | Last Updated | WIP | Number of Commits |\n")
+            fh.write("|-----------|-------|--------|---------|--------------|-----|-------------------|\n")
+            for pr_num, details in sorted_prs:
+                fh.write(f"| [{pr_num}]({details['url']}) | {details['title']} | {details['author']} | {details['created']} | {details['last_updated']} | {details['wip']} | {details['num_commits']} |\n")
+
+    def run(self):
+        self.update_json()
+        self.write_readme()
+        
+if __name__ == "__main__":
+import optparse
+    parser = optparse.OptionParser()
+    parser.add_option('--title', dest='title', help='PR title')
+    parser.add_option('--url', dest='url', help='PR URL')
+    parser.add_option('--pr_num', dest='pr_num', help='PR number')
+    parser.add_option('--created', dest='created', help='PR creation date')
+    parser.add_option('--last_updated', dest='last_updated', help='PR last updated date')
+    parser.add_option('--wip', dest='wip', help='Is PR WIP')
+    parser.add_option('--num_commits', dest='num_commits', help='Number of commits in PR')
+    parser.add_option('--author', dest='author', help='PR author') 
+
+    options, _ = parser.parse_args()
+
+    updater = UpdateReadme(options.title, options.url, options.pr_num, options.created, options.last_updated, options.wip, options.num_commits, options.author)
+    updater.run()
\ No newline at end of file

From fc2d67cc85d8f78776c5c562396a0bd9ac437870 Mon Sep 17 00:00:00 2001
From: Stefan Roiser <stefan.roiser@cern.ch>
Date: Fri, 16 Jan 2026 14:53:46 +0100
Subject: [PATCH 20/27] always use home dir

fix python script

always use home dir
---
 .github/workflows/mg5_codegen.yml  | 14 ++++++++------
 .github/workflows/update_readme.py |  2 +-
 2 files changed, 9 insertions(+), 7 deletions(-)

diff --git a/.github/workflows/mg5_codegen.yml b/.github/workflows/mg5_codegen.yml
index dd19d9ea8f..2c74e256ae 100644
--- a/.github/workflows/mg5_codegen.yml
+++ b/.github/workflows/mg5_codegen.yml
@@ -28,15 +28,16 @@ jobs:
       
       - name: Run code generator
         run: |
+          cd ${GITHUB_WORKSPACE}
           if [ ! -e MG5aMC/mg5amcnlo/PLUGIN/CUDACPP_SA_OUTPUT ] ; then pushd MG5aMC/mg5amcnlo/PLUGIN/ && ln -s ../../../epochX/cudacpp/CODEGEN/PLUGIN/CUDACPP_SA_OUTPUT && popd ; fi
           ./MG5aMC/mg5amcnlo/bin/mg5_aMC test/processes/${{ matrix.process }}/output.mg5
       
       - name: Check code format with clang-format
         id: clang-format-check
         run: |
-          chmod +x $GITHUB_WORKSPACE/.github/workflows/check-formatting.sh
-          cd ${{ env.PROC_DIR }}
-          $GITHUB_WORKSPACE/.github/workflows/check-formatting.sh
+          chmod +x ${GITHUB_WORKSPACE}/.github/workflows/check-formatting.sh
+          cd ${GITHUB_WORKSPACE}/${{ env.PROC_DIR }}
+          ${GITHUB_WORKSPACE}/.github/workflows/check-formatting.sh
           files2format=$(cat files2format)
           echo "files2format=$files2format" >> $GITHUB_OUTPUT
 
@@ -65,8 +66,9 @@ jobs:
           git config --global user.email "github-actions@users.noreply.github.com"
           
           # Clone target repo
+          cd ${GITHUB_WORKSPACE}
           git clone https://x-access-token:${{ steps.app-token.outputs.token }}@github.com/${TARGET_REPO}.git
-          cd madgraph4gpu-generated-processes
+          cd ${GITHUB_WORKSPACE}/madgraph4gpu-generated-processes
           
           # Create branch based on PR number
           BRANCH_NAME="codegen-pr-${{ github.event.pull_request.number }}"
@@ -105,10 +107,10 @@ jobs:
           echo "created_at: ${{ github.event.pull_request.created_at }}"
           echo "commits: ${{ github.event.pull_request.commits }}"
 
-          cd $GITHUB_WORKSPACE/madgraph4gpu-generated-processes
+          cd ${GITHUB_WORKSPACE}/madgraph4gpu-generated-processes
           git checkout main
 
-          python3 $GITHUB_WORKSPACE/.github/workflows/update_readme.py \
+          python3 ${GITHUB_WORKSPACE}/.github/workflows/update_readme.py \
             --title "${{ github.event.pull_request.title }}" \
             --url "${{ github.event.pull_request.html_url }}" \
             --pr_num "${{ github.event.pull_request.number }}" \
diff --git a/.github/workflows/update_readme.py b/.github/workflows/update_readme.py
index 6918442ee7..77dd0bb624 100644
--- a/.github/workflows/update_readme.py
+++ b/.github/workflows/update_readme.py
@@ -1,6 +1,7 @@
 #!/usr/bin/env python3
 
 import json
+import optparse
 
 class UpdateReadme:
     def __init__(self, title, url, pr_num, created, last_updated, wip, num_commits, author):
@@ -58,7 +59,6 @@ def run(self):
         self.write_readme()
         
 if __name__ == "__main__":
-import optparse
     parser = optparse.OptionParser()
     parser.add_option('--title', dest='title', help='PR title')
     parser.add_option('--url', dest='url', help='PR URL')

From 4a776ef41bcad1aa4c784d0ac52ab6974f5cf110 Mon Sep 17 00:00:00 2001
From: Stefan Roiser <stefan.roiser@cern.ch>
Date: Fri, 16 Jan 2026 14:57:20 +0100
Subject: [PATCH 21/27] use python setup

print python version

add 8

use python setup
---
 .github/workflows/mg5_codegen.yml | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/mg5_codegen.yml b/.github/workflows/mg5_codegen.yml
index 2c74e256ae..cc8c15cb26 100644
--- a/.github/workflows/mg5_codegen.yml
+++ b/.github/workflows/mg5_codegen.yml
@@ -56,7 +56,7 @@ jobs:
           repositories: madgraph4gpu-generated-processes
 
       - name: Commit to target repository
-        if: ${{ steps.clang-format-check.outputs.files2format == '0' }}
+        if: ${{ steps.clang-format-check.outputs.files2format == '8' }}
         env:
           TARGET_REPO: roiser/madgraph4gpu-generated-processes
         run: |
@@ -95,6 +95,11 @@ jobs:
             echo "EOF"
           } >> $GITHUB_OUTPUT
 
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.11"
+
       - name: Update README.md
         if: ${{ steps.clang-format-check.outputs.files2format == '8' }}
         run: |
@@ -110,7 +115,9 @@ jobs:
           cd ${GITHUB_WORKSPACE}/madgraph4gpu-generated-processes
           git checkout main
 
-          python3 ${GITHUB_WORKSPACE}/.github/workflows/update_readme.py \
+          # python --version
+
+          python ${GITHUB_WORKSPACE}/.github/workflows/update_readme.py \
             --title "${{ github.event.pull_request.title }}" \
             --url "${{ github.event.pull_request.html_url }}" \
             --pr_num "${{ github.event.pull_request.number }}" \

From b7124cf5fd250580dd86123b63517ab8377255a6 Mon Sep 17 00:00:00 2001
From: Stefan Roiser <stefan.roiser@cern.ch>
Date: Fri, 16 Jan 2026 16:04:46 +0100
Subject: [PATCH 22/27] re-order table, add branch name

fix typo

empty

empty

re-order table, add branch name
---
 .github/workflows/update_readme.py | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/.github/workflows/update_readme.py b/.github/workflows/update_readme.py
index 77dd0bb624..21c72607e0 100644
--- a/.github/workflows/update_readme.py
+++ b/.github/workflows/update_readme.py
@@ -13,6 +13,7 @@ def __init__(self, title, url, pr_num, created, last_updated, wip, num_commits,
         self.wip = wip
         self.num_commits = num_commits
         self.author = author
+        self.remote_repo_url = "https://github.com/roiser/madgraph4gpu-generated-processes/"
 
     def update_json(self):
         fh = open('readme_data.json', 'r')
@@ -22,6 +23,7 @@ def update_json(self):
         if self.pr_num not in data:
             new_entry = {
                 "title": self.title,
+                "branch": self.remote_repo_url + "tree/codegen-pr-" + str(self.pr_num),
                 "url": self.url,
                 "created": self.created,
                 "last_updated": self.last_updated,
@@ -49,10 +51,10 @@ def write_readme(self):
 
         with open('README.md', 'w') as fh:
             fh.write("# Pull Request Summary\n\n")
-            fh.write("| PR Number | Title | Author | Created | Last Updated | WIP | Number of Commits |\n")
-            fh.write("|-----------|-------|--------|---------|--------------|-----|-------------------|\n")
+            fh.write("| PR Number | Local Branch | Title | WIP | # Commits | Author | Created | Last Update |\n")
+            fh.write("|-----------|--------------|-------|-----|-----------|--------|---------|-------------|\n")
             for pr_num, details in sorted_prs:
-                fh.write(f"| [{pr_num}]({details['url']}) | {details['title']} | {details['author']} | {details['created']} | {details['last_updated']} | {details['wip']} | {details['num_commits']} |\n")
+                fh.write(f"| [{pr_num}]({details['url']}) | [{details['branch'].split('/')[-1]}]({details['branch']}) | {details['title']} | {details['wip']} | {details['num_commits']} | {details['author']} | {details['created']} | {details['last_updated']} |\n")
 
     def run(self):
         self.update_json()

From f183d8b912160dc0dd575db5c4455fd2f9752e51 Mon Sep 17 00:00:00 2001
From: Stefan Roiser <stefan.roiser@cern.ch>
Date: Fri, 16 Jan 2026 17:17:54 +0100
Subject: [PATCH 23/27] multiple processes

move to 0, check success

invert

use multiple processes
---
 .github/workflows/mg5_codegen.yml | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/.github/workflows/mg5_codegen.yml b/.github/workflows/mg5_codegen.yml
index cc8c15cb26..126398174c 100644
--- a/.github/workflows/mg5_codegen.yml
+++ b/.github/workflows/mg5_codegen.yml
@@ -10,14 +10,10 @@ jobs:
 
     strategy:
       matrix:
-#        process: [pp_ttx, pp_ttxj]
-#        backend: [scalar, avx2, avx512, cuda, hip]
-        process: [pp_ttx]
-        backend: [scalar]
+        process: [pp_ttx, pp_ttxj]
 
     env:
       PROC_DIR: PROC_${{ matrix.process }}
-      BACKEND : ${{ matrix.backend }}
     
     steps:
       - name: Checkout codegen repo
@@ -101,7 +97,7 @@ jobs:
           python-version: "3.11"
 
       - name: Update README.md
-        if: ${{ steps.clang-format-check.outputs.files2format == '8' }}
+        if: ${{ steps.commit_to_target_repository.outcome == 'success' }}
         run: |
           echo "title: ${{ github.event.pull_request.title }}"
           echo "url: ${{ github.event.pull_request.html_url }}"

From bf37539200b4b9280a1b0f2eaa15580257749513 Mon Sep 17 00:00:00 2001
From: Stefan Roiser <stefan.roiser@cern.ch>
Date: Fri, 16 Jan 2026 17:28:00 +0100
Subject: [PATCH 24/27] move to 0

---
 .github/workflows/mg5_codegen.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/mg5_codegen.yml b/.github/workflows/mg5_codegen.yml
index 126398174c..7dc8395ea4 100644
--- a/.github/workflows/mg5_codegen.yml
+++ b/.github/workflows/mg5_codegen.yml
@@ -52,7 +52,7 @@ jobs:
           repositories: madgraph4gpu-generated-processes
 
       - name: Commit to target repository
-        if: ${{ steps.clang-format-check.outputs.files2format == '8' }}
+        if: ${{ steps.clang-format-check.outputs.files2format == '0' }}
         env:
           TARGET_REPO: roiser/madgraph4gpu-generated-processes
         run: |

From a4767119bcd776848b255925f24f1af4d670ac4e Mon Sep 17 00:00:00 2001
From: Stefan Roiser <stefan.roiser@cern.ch>
Date: Fri, 16 Jan 2026 17:38:42 +0100
Subject: [PATCH 25/27] make ci fail immediately when code check fails

---
 .github/workflows/mg5_codegen.yml | 30 ++++++++++--------------------
 1 file changed, 10 insertions(+), 20 deletions(-)

diff --git a/.github/workflows/mg5_codegen.yml b/.github/workflows/mg5_codegen.yml
index 7dc8395ea4..ae866858a8 100644
--- a/.github/workflows/mg5_codegen.yml
+++ b/.github/workflows/mg5_codegen.yml
@@ -41,6 +41,7 @@ jobs:
             echo "✅ clang-format check passed."
           else
             echo "❌ clang-format check failed."
+            exit 1
           fi
 
       - name: Generate GitHub App token
@@ -82,15 +83,6 @@ jobs:
           
           echo "✅ Pushed to ${TARGET_REPO} on branch ${BRANCH_NAME}"
       
-      - name: Read patch file
-        if: ${{ steps.clang-format-check.outputs.files2format != '0' }}
-        run: |
-          {
-            echo "patch_file_content<<EOF"
-            cat ${{ env.PROC_DIR }}/format-changes.patch
-            echo "EOF"
-          } >> $GITHUB_OUTPUT
-
       - name: Set up Python
         uses: actions/setup-python@v5
         with:
@@ -99,20 +91,9 @@ jobs:
       - name: Update README.md
         if: ${{ steps.commit_to_target_repository.outcome == 'success' }}
         run: |
-          echo "title: ${{ github.event.pull_request.title }}"
-          echo "url: ${{ github.event.pull_request.html_url }}"
-          echo "number: ${{ github.event.pull_request.number }}"
-          echo "updated_at: ${{ github.event.pull_request.updated_at }}"
-          echo "user: ${{ github.event.pull_request.user.login }}"
-          echo "draft: ${{ github.event.pull_request.draft }}"
-          echo "created_at: ${{ github.event.pull_request.created_at }}"
-          echo "commits: ${{ github.event.pull_request.commits }}"
-
           cd ${GITHUB_WORKSPACE}/madgraph4gpu-generated-processes
           git checkout main
 
-          # python --version
-
           python ${GITHUB_WORKSPACE}/.github/workflows/update_readme.py \
             --title "${{ github.event.pull_request.title }}" \
             --url "${{ github.event.pull_request.html_url }}" \
@@ -129,6 +110,15 @@ jobs:
           
           echo "✅ Pushed to ${TARGET_REPO} on branch main"
 
+      - name: Read patch file
+        if: ${{ steps.clang-format-check.outputs.files2format != '0' }}
+        run: |
+          {
+            echo "patch_file_content<<EOF"
+            cat ${{ env.PROC_DIR }}/format-changes.patch
+            echo "EOF"
+          } >> $GITHUB_OUTPUT
+
       - name: Comment on PR with format issues
         if: ${{ steps.clang-format-check.outputs.files2format != '0' }}
         uses: actions/github-script@v7

From e4e2fb3d83707385722a7db5f19e191f46c19cbb Mon Sep 17 00:00:00 2001
From: Stefan Roiser <stefan.roiser@cern.ch>
Date: Fri, 16 Jan 2026 17:40:50 +0100
Subject: [PATCH 26/27] remove last step, not needed anymore

---
 .github/workflows/mg5_codegen.yml | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/.github/workflows/mg5_codegen.yml b/.github/workflows/mg5_codegen.yml
index ae866858a8..5b31d381a4 100644
--- a/.github/workflows/mg5_codegen.yml
+++ b/.github/workflows/mg5_codegen.yml
@@ -149,7 +149,3 @@ jobs:
               issue_number: context.issue.number,
               body: `${comment} \n \`\`\` \n ${patchContent} \n \`\`\``
             });
-
-      - name: Fail if format check failed
-        if: ${{ steps.clang-format-check.outputs.files2format != '0' }}
-        run: exit 1

From 9c9238def197ac4ec25fafd8899772b25a3cfa52 Mon Sep 17 00:00:00 2001
From: Stefan Roiser <stefan.roiser@cern.ch>
Date: Fri, 16 Jan 2026 17:44:14 +0100
Subject: [PATCH 27/27] preprend all steps with if statement

---
 .github/workflows/mg5_codegen.yml | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/.github/workflows/mg5_codegen.yml b/.github/workflows/mg5_codegen.yml
index 5b31d381a4..466444cb5d 100644
--- a/.github/workflows/mg5_codegen.yml
+++ b/.github/workflows/mg5_codegen.yml
@@ -41,10 +41,10 @@ jobs:
             echo "✅ clang-format check passed."
           else
             echo "❌ clang-format check failed."
-            exit 1
           fi
 
       - name: Generate GitHub App token
+        if: ${{ steps.clang-format-check.outputs.files2format == '0' }}
         id: app-token
         uses: actions/create-github-app-token@v1
         with:
@@ -84,6 +84,7 @@ jobs:
           echo "✅ Pushed to ${TARGET_REPO} on branch ${BRANCH_NAME}"
       
       - name: Set up Python
+        if: ${{ steps.commit_to_target_repository.outcome == 'success' }}
         uses: actions/setup-python@v5
         with:
           python-version: "3.11"
@@ -149,3 +150,7 @@ jobs:
               issue_number: context.issue.number,
               body: `${comment} \n \`\`\` \n ${patchContent} \n \`\`\``
             });
+
+      - name: Fail if format check failed
+        if: ${{ steps.clang-format-check.outputs.files2format != '0' }}
+        run: exit 1