Log sha

.github/workflows/archiver.sh

@@ -55,6 +55,7 @@ echo "VERSION.txt file available on ${topdir}/$(basename ${outfile})"
 cd ${topdir}/epochX/cudacpp/CODEGEN/PLUGIN/CUDACPP_SA_OUTPUT
 for file in $(git ls-tree --name-only HEAD -r); do
   if [ "${file/acceptance_tests}" != "${file}" ]; then continue; fi # acceptance_tests are not needed for code generation
+  if [ "${file}" == "VERSION.txt" ]; then continue; fi # skip the committed (non-release) VERSION.txt: the release-ready one generated above must win
   mkdir -p ${outdir}/$(dirname ${file})
   cp -dp ${file} ${outdir}/${file} # preserve symlinks for AUTHORS, COPYING, COPYING.LESSER and COPYRIGHT
 done

.github/workflows/version_master.sh

@@ -0,0 +1,27 @@
+#!/bin/bash
+# Copyright (C) 2020-2025 CERN and UCLouvain.
+# Licensed under the GNU Lesser General Public License (version 3 or later).
+# Created by: D. Massaro (2026) for the MG5aMC CUDACPP plugin.
+
+# Generate the "non-release" form of CUDACPP_SA_OUTPUT/VERSION.txt for a normal
+# commit/push on master (the release form is instead generated by archiver.sh).
+# The file records the minimal supported MG5aMC version and the last commit block.
+# It is committed back to the repository by version_master.yml, so at any time it
+# stores the information about the most recent (non version-update) commit.
+
+# Path to the top directory of madgraph4gpu
+# In the CI this would be simply $(pwd), but allow the script to be run also outside the CI
+echo "Executing $0 $*"
+topdir=$(cd $(dirname $0)/../..; pwd)
+
+# Create the VERSION.txt file directly inside the plugin source directory
+cd ${topdir}/epochX/cudacpp/CODEGEN/PLUGIN/CUDACPP_SA_OUTPUT
+outfile=VERSION.txt
+dateformat='%Y-%m-%d_%H:%M:%S UTC'
+rm -f ${outfile} # remove any pre-existing VERSION.txt before regenerating it
+touch ${outfile}
+echo "mg5_version_minimal          = $(cat __init__.py | awk '/minimal_mg5amcnlo_version/{print $3}'  | sed 's/(//' | sed 's/)//' | sed 's/,/./g')" >> ${outfile}
+echo "" >> ${outfile}
+TZ=UTC git --no-pager log -n1 --date=format-local:"${dateformat}" --pretty=format:'commit         %h%nAuthor:        %an%nAuthorDate:    %ad%nCommitter:     %cn%nCommitterDate: %cd%nMessage:       "%s"%n' >> ${outfile}
+python3 -c 'print("="*132)'; cat ${outfile}; python3 -c 'print("="*132)'
+echo "VERSION.txt file available on $(pwd)/${outfile}"

.github/workflows/version_master.yml

@@ -0,0 +1,59 @@
+# Copyright (C) 2020-2025 CERN and UCLouvain.
+# Licensed under the GNU Lesser General Public License (version 3 or later).
+# Created by: D. Massaro (2026) for the MG5aMC CUDACPP plugin.
+
+#----------------------------------------------------------------------------------------------------------------------------------
+
+name: Version (master)
+
+#----------------------------------------------------------------------------------------------------------------------------------
+
+# On every push to master, (re)generate the non-release CUDACPP_SA_OUTPUT/VERSION.txt
+# describing the last commit, and commit it back. The auto commit uses '[skip ci]' so
+# that it does not re-trigger this workflow (which would otherwise loop forever): as a
+# result VERSION.txt always tracks the latest genuine commit on master.
+on:
+  push:
+    branches:
+      - master
+
+#----------------------------------------------------------------------------------------------------------------------------------
+
+jobs:
+
+  version:
+
+    runs-on: ubuntu-latest
+
+    # TEMPORARY! this mirrors the repository guard used in archiver.yml
+    if: |
+      ( github.repository == 'madgraph5/madgraph4gpu' )
+      || ( github.repository == 'valassi/madgraph4gpu' )
+
+    steps:
+
+    - name: checkout
+      uses: actions/checkout@v4
+      with:
+        submodules: 'true'
+
+    - name: create_versiontxt
+      run: |
+        echo "Current directory is $(pwd)"
+        .github/workflows/version_master.sh
+
+    - name: commit_versiontxt
+      run: |
+        versiontxt=epochX/cudacpp/CODEGEN/PLUGIN/CUDACPP_SA_OUTPUT/VERSION.txt
+        git config user.name github-actions
+        git config user.email github-actions@github.com
+        if [ -z "$(git status --porcelain ${versiontxt})" ]; then
+          echo "No changes detected in ${versiontxt}: nothing to commit"
+        else
+          echo "Commit and push ${versiontxt}"
+          # '[skip ci]' prevents this push from re-triggering the workflow (avoid infinite loop)
+          git commit -m "Update VERSION.txt [skip ci]" ${versiontxt}
+          git push
+        fi
+
+#----------------------------------------------------------------------------------------------------------------------------------

epochX/cudacpp/CODEGEN/PLUGIN/CUDACPP_SA_OUTPUT/launch_plugin.py

@@ -17,12 +17,14 @@
     import internal.extended_cmd as extended_cmd
     import internal.banner as banner_mod
     import internal.common_run_interface as common_run_interface
+    import internal.files as files
 else:
     import madgraph.interface.madevent_interface as madevent_interface
     import madgraph.various.misc as misc
     import madgraph.interface.extended_cmd as extended_cmd
     import madgraph.various.banner as banner_mod
     import madgraph.interface.common_run_interface as common_run_interface
+    import madgraph.iolibs.files as files
 
 class CPPMEInterface(madevent_interface.MadEventCmdShell):
     def compile(self, *args, **opts):
@@ -62,6 +64,70 @@ def compile(self, *args, **opts):
         else:
             return misc.compile(nb_core=self.options['nb_core'], *args, **opts)
 
+    def do_generate_events(self, *args, **kwargs):
+        cudacpp_version = os.path.join(self.me_dir, "CUDACPP_VERSION.txt")
+        if os.path.exists(cudacpp_version):
+            with open(cudacpp_version, "r") as f:
+                lines = f.readlines()
+            logger.info("=================================================")
+            for line in lines:
+                logger.info(line.strip())
+            logger.info("=================================================")
+        return super().do_generate_events(*args, **kwargs)
+
+    def do_create_gridpack(self, *args, **kwargs):
+        """Overload to embed the CUDACPP_VERSION.txt banner into the gridpack.
+        The banner is not printed here (this runs at gridpack *creation* time); instead
+        it is packaged inside the tarball and printed at *run* time by run.sh, since a
+        gridpack run uses GridPackCmd and never goes through this plugin interface."""
+        self.embed_cudacpp_version_in_gridpack()
+        return super().do_create_gridpack(*args, **kwargs)
+
+    # DM - make the CUDACPP_VERSION.txt banner available (and printed) inside gridpacks
+    def embed_cudacpp_version_in_gridpack(self):
+        """Prepare the process directory so that make_gridpack packages the CUDACPP banner
+        and run.sh prints it at runtime. Only files copied into the tarball are touched:
+          - copy CUDACPP_VERSION.txt into bin/internal/ (bin/ is packaged into madevent/)
+          - patch bin/internal/Gridpack/run.sh (the template packaged as ./run.sh) to cat it
+        This must run *before* super().do_create_gridpack(), which invokes make_gridpack."""
+        version_src = pjoin(self.me_dir, 'CUDACPP_VERSION.txt')
+        if not os.path.exists(version_src):
+            logger.warning('CUDACPP_VERSION.txt not found in %s: the gridpack will not print '
+                           'the CUDACPP version banner' % self.me_dir)
+            return
+        # 1) copy the banner into a directory that make_gridpack moves into madevent/
+        #    (make_gridpack packages 'bin' but not the process-root CUDACPP_VERSION.txt)
+        files.cp(version_src, pjoin(self.me_dir, 'bin', 'internal', 'CUDACPP_VERSION.txt'))
+        # 2) patch the gridpack run.sh so it prints the banner at runtime (idempotent)
+        runsh = pjoin(self.me_dir, 'bin', 'internal', 'Gridpack', 'run.sh')
+        if not os.path.exists(runsh):
+            logger.warning('%s not found: the gridpack will not print the CUDACPP version banner'
+                           % runsh)
+            return
+        marker = '# CUDACPP version banner'
+        with open(runsh) as fsock:
+            content = fsock.read()
+        if marker in content:
+            return # already patched (e.g. create_gridpack called more than once)
+        # DIR (=./madevent when the gridpack is unpacked) is defined just above this anchor
+        anchor = '# For Linux'
+        banner_block = (
+            '%s (printed by the MG5aMC CUDACPP plugin)\n'
+            'if [ -f "${DIR}/bin/internal/CUDACPP_VERSION.txt" ]; then\n'
+            '    echo "================================================="\n'
+            '    cat "${DIR}/bin/internal/CUDACPP_VERSION.txt"\n'
+            '    echo "================================================="\n'
+            'fi\n\n' % marker
+        )
+        if anchor not in content:
+            logger.warning('Could not find the expected anchor in %s: the gridpack will not '
+                           'print the CUDACPP version banner' % runsh)
+            return
+        content = content.replace(anchor, banner_block + anchor, 1)
+        with open(runsh, 'w') as fsock:
+            fsock.write(content)
+        logger.info('Patched %s to print the CUDACPP version banner at gridpack runtime' % runsh)
+
 # Phase-Space Optimization ------------------------------------------------------------------------------------
 template_on = \
 """#***********************************************************************

epochX/cudacpp/CODEGEN/PLUGIN/CUDACPP_SA_OUTPUT/output.py

@@ -279,9 +279,59 @@ def finalize(self, matrix_element, cmdhistory, MG5options, outputflag):
 
             # Additional patching (OM)
             self.add_madevent_plugin_fct() # Added by OM
+            # DM - write the CUDACPP_VERSION.txt banner file at the root of the process directory
+            self.write_cudacpp_version_file()
         # do not call standard finalize since is this is already done...
         #return super().finalize(matrix_element, cmdhistory, MG5options, outputflag)
 
+    # DM - build the CUDACPP_VERSION.txt file logged at runtime by the cudacpp bridge (see counters.cc/smatrix_multi.f)
+    def write_cudacpp_version_file(self):
+        """Write <dir_path>/CUDACPP_VERSION.txt, the 4-line version banner printed at runtime.
+        Information is gathered from two files:
+          - PLUGIN/CUDACPP_OUTPUT/VERSION.txt : cudacpp version/tag/commit and the minimal MG5 version supported
+          - <MG5DIR>/VERSION                  : the current MG5aMC version
+        The plugin VERSION.txt can be in two forms (release / non-release), see the plugin CLAUDE.md."""
+        sha_or_tag = 'unknown'
+        commit_message = ''
+        mg5_minimal = 'unknown'
+        mg5_current = 'unknown'
+        # Parse the plugin VERSION.txt (created by the archiver / master-push workflow)
+        version_txt = pjoin(PLUGINDIR, 'VERSION.txt')
+        if os.path.exists(version_txt):
+            keyval = {}   # lines of the form 'key = value'
+            commit_sha = None
+            for line in open(version_txt):
+                if '=' in line:
+                    key, val = line.split('=', 1)
+                    keyval[key.strip()] = val.strip()
+                elif line.startswith('commit '):     # 'commit         <sha>'
+                    commit_sha = line.split(None, 1)[1].strip() if len(line.split(None, 1)) > 1 else None
+                elif line.startswith('Message:'):     # 'Message:       "<msg>"'
+                    commit_message = line.split(':', 1)[1].strip().strip('"')
+            # <sha_or_tag>: the tagged cudacpp_version if this is a release, else the commit sha
+            sha_or_tag = keyval.get('cudacpp_version') or commit_sha or 'unknown'
+            mg5_minimal = keyval.get('mg5_version_minimal', 'unknown')
+        else:
+            logger.warning('CUDACPP VERSION.txt not found in %s: CUDACPP_VERSION.txt will be incomplete' % PLUGINDIR)
+        # Parse the current MG5aMC version
+        mg5_version_file = pjoin(MG5DIR, 'VERSION')
+        if os.path.exists(mg5_version_file):
+            for line in open(mg5_version_file):
+                if line.strip().startswith('version'):
+                    mg5_current = line.split('=', 1)[1].strip()
+                    break
+        # Assemble and write the 4-line banner
+        cudacpp_line = '%s' % sha_or_tag
+        if commit_message:
+            cudacpp_line += ' "%s"' % commit_message
+        banner = [ 'You are using MadGraph5_aMC@NLO + CUDACPP plugin:',
+                   'CUDACPP version = %s' % cudacpp_line,
+                   'Minimal MadGraph5 version supported = %s' % mg5_minimal,
+                   'Current MadGraph5 version           = %s' % mg5_current ]
+        outpath = pjoin(self.dir_path, 'CUDACPP_VERSION.txt')
+        open(outpath, 'w').write('\n'.join(banner) + '\n')
+        logger.info('Created CUDACPP_VERSION.txt in %s' % self.dir_path)
+
     # AV (default from OM's tutorial) - overload settings and add a debug printout
     def modify_grouping(self, matrix_element):
         """allow to modify the grouping (if grouping is in place)