fix FPEs and debug nobm_pp_ttW for ATLAS

.github/workflows/testsuite_allprocesses.yml

@@ -33,7 +33,7 @@ jobs:
       fail-fast: false # important to see all results even if one fails (fail-fast is true by default)
       matrix:
         # FIXME? Can the list of supported processes be specified only once in oneprocess.yml or allprocesses.yml?
-        process: [ee_mumu, gg_tt, gg_ttg, gg_ttgg, gg_ttggg, gg_tt01g, gq_ttq, pp_tt012j]
+        process: [ee_mumu, gg_tt, gg_ttg, gg_ttgg, gg_ttggg, gg_tt01g, gq_ttq, pp_tt012j, nobm_pp_ttW]
         suffix: [mad, sa]
     uses: ./.github/workflows/testsuite_oneprocess.yml
     with:

.github/workflows/testsuite_oneprocess.yml

@@ -35,7 +35,7 @@ on:
         ###type: string
         type: choice
         # FIXME? Can the list of supported processes be specified only once in oneprocess.yml or allprocesses.yml?
-        options: [gg_tt.mad, gg_ttg.mad, gg_ttgg.mad, gg_ttggg.mad, ee_mumu.mad]
+        options: [gg_tt.mad, gg_ttg.mad, gg_ttgg.mad, gg_ttggg.mad, ee_mumu.mad, nobm_pp_ttW.mad]
 
 #----------------------------------------------------------------------------------------------------------------------------------
 

epochX/cudacpp/CODEGEN/PLUGIN/CUDACPP_SA_OUTPUT/madgraph/iolibs/template_files/gpu/process_sigmaKin_function.inc

@@ -67,23 +67,26 @@
     }
 #ifdef MGONGPU_SUPPORTS_MULTICHANNEL
     // Event-by-event random choice of color #402
-    const int channelIdC = channelId - 1; // coloramps.h uses the C array indexing starting at 0
-    fptype targetamp[ncolor] = { 0 };
-    for( int icolC = 0; icolC < ncolor; icolC++ )
+    if( channelId != 0 ) // no event-by-event choice of color if channelId == 0 (fix FPE #783)
     {
-      if( icolC == 0 )
-        targetamp[icolC] = 0;
-      else
-        targetamp[icolC] = targetamp[icolC - 1];
-      if( mgOnGpu::icolamp[channelIdC][icolC] ) targetamp[icolC] += jamp2_sv[icolC];
-    }
-    //printf( "sigmaKin: ievt=%%4d rndcol=%%f\n", ievt, allrndcol[ievt] );
-    for( int icolC = 0; icolC < ncolor; icolC++ )
-    {
-      if( allrndcol[ievt] < ( targetamp[icolC] / targetamp[ncolor - 1] ) )
+      const unsigned int channelIdC = channelId - 1; // coloramps.h uses the C array indexing starting at 0
+      fptype targetamp[ncolor] = { 0 };
+      for( int icolC = 0; icolC < ncolor; icolC++ )
       {
-        allselcol[ievt] = icolC + 1; // NB Fortran [1,ncolor], cudacpp [0,ncolor-1]
-        break;
+        if( icolC == 0 )
+          targetamp[icolC] = 0;
+        else
+          targetamp[icolC] = targetamp[icolC - 1];
+        if( mgOnGpu::icolamp[channelIdC][icolC] ) targetamp[icolC] += jamp2_sv[icolC];
+      }
+      //printf( "sigmaKin: ievt=%%4d rndcol=%%f\n", ievt, allrndcol[ievt] );
+      for( int icolC = 0; icolC < ncolor; icolC++ )
+      {
+        if( allrndcol[ievt] < ( targetamp[icolC] / targetamp[ncolor - 1] ) )
+        {
+          allselcol[ievt] = icolC + 1; // NB Fortran [1,ncolor], cudacpp [0,ncolor-1]
+          break;
+        }
       }
     }
 #endif
@@ -178,57 +181,60 @@
 #endif
       }
 #ifdef MGONGPU_SUPPORTS_MULTICHANNEL // multichannel enabled (random color choice)
-      const int channelIdC = channelId - 1; // coloramps.h uses the C array indexing starting at 0
       // Event-by-event random choice of color #402
-      fptype_sv targetamp[ncolor] = { 0 };
-      for( int icolC = 0; icolC < ncolor; icolC++ )
+      if( channelId != 0 ) // no event-by-event choice of color if channelId == 0 (fix FPE #783)
       {
-        if( icolC == 0 )
-          targetamp[icolC] = fptype_sv{ 0 };
-        else
-          targetamp[icolC] = targetamp[icolC - 1];
-        if( mgOnGpu::icolamp[channelIdC][icolC] ) targetamp[icolC] += jamp2_sv[icolC];
-      }
+        const unsigned int channelIdC = channelId - 1; // coloramps.h uses the C array indexing starting at 0
+        fptype_sv targetamp[ncolor] = { 0 };
+        for( int icolC = 0; icolC < ncolor; icolC++ )
+        {
+          if( icolC == 0 )
+            targetamp[icolC] = fptype_sv{ 0 };
+          else
+            targetamp[icolC] = targetamp[icolC - 1];
+          if( mgOnGpu::icolamp[channelIdC][icolC] ) targetamp[icolC] += jamp2_sv[icolC];
+        }
 #if defined MGONGPU_CPPSIMD and defined MGONGPU_FPTYPE_DOUBLE and defined MGONGPU_FPTYPE2_FLOAT
-      fptype_sv targetamp2[ncolor] = { 0 };
-      for( int icolC = 0; icolC < ncolor; icolC++ )
-      {
-        if( icolC == 0 )
-          targetamp2[icolC] = fptype_sv{ 0 };
-        else
-          targetamp2[icolC] = targetamp2[icolC - 1];
-        if( mgOnGpu::icolamp[channelIdC][icolC] ) targetamp2[icolC] += jamp2_sv[ncolor + icolC];
-      }
-#endif
-      for( int ieppV = 0; ieppV < neppV; ++ieppV )
-      {
-        const int ievt = ievt00 + ieppV;
-        //printf( "sigmaKin: ievt=%%4d rndcol=%%f\n", ievt, allrndcol[ievt] );
+        fptype_sv targetamp2[ncolor] = { 0 };
         for( int icolC = 0; icolC < ncolor; icolC++ )
         {
+          if( icolC == 0 )
+            targetamp2[icolC] = fptype_sv{ 0 };
+          else
+            targetamp2[icolC] = targetamp2[icolC - 1];
+          if( mgOnGpu::icolamp[channelIdC][icolC] ) targetamp2[icolC] += jamp2_sv[ncolor + icolC];
+        }
+#endif
+        for( int ieppV = 0; ieppV < neppV; ++ieppV )
+        {
+          const int ievt = ievt00 + ieppV;
+          //printf( "sigmaKin: ievt=%%4d rndcol=%%f\n", ievt, allrndcol[ievt] );
+          for( int icolC = 0; icolC < ncolor; icolC++ )
+          {
 #if defined MGONGPU_CPPSIMD
-          const bool okcol = allrndcol[ievt] < ( targetamp[icolC][ieppV] / targetamp[ncolor - 1][ieppV] );
+            const bool okcol = allrndcol[ievt] < ( targetamp[icolC][ieppV] / targetamp[ncolor - 1][ieppV] );
 #else
-          const bool okcol = allrndcol[ievt] < ( targetamp[icolC] / targetamp[ncolor - 1] );
+            const bool okcol = allrndcol[ievt] < ( targetamp[icolC] / targetamp[ncolor - 1] );
 #endif
-          if( okcol )
-          {
-            allselcol[ievt] = icolC + 1; // NB Fortran [1,ncolor], cudacpp [0,ncolor-1]
-            break;
+            if( okcol )
+            {
+              allselcol[ievt] = icolC + 1; // NB Fortran [1,ncolor], cudacpp [0,ncolor-1]
+              break;
+            }
           }
-        }
 #if defined MGONGPU_CPPSIMD and defined MGONGPU_FPTYPE_DOUBLE and defined MGONGPU_FPTYPE2_FLOAT
-        const int ievt2 = ievt00 + ieppV + neppV;
-        //printf( "sigmaKin: ievt=%%4d rndcol=%%f\n", ievt2, allrndcol[ievt2] );
-        for( int icolC = 0; icolC < ncolor; icolC++ )
-        {
-          if( allrndcol[ievt2] < ( targetamp2[icolC][ieppV] / targetamp2[ncolor - 1][ieppV] ) )
+          const int ievt2 = ievt00 + ieppV + neppV;
+          //printf( "sigmaKin: ievt=%%4d rndcol=%%f\n", ievt2, allrndcol[ievt2] );
+          for( int icolC = 0; icolC < ncolor; icolC++ )
           {
-            allselcol[ievt2] = icolC + 1; // NB Fortran [1,ncolor], cudacpp [0,ncolor-1]
-            break;
+            if( allrndcol[ievt2] < ( targetamp2[icolC][ieppV] / targetamp2[ncolor - 1][ieppV] ) )
+            {
+              allselcol[ievt2] = icolC + 1; // NB Fortran [1,ncolor], cudacpp [0,ncolor-1]
+              break;
+            }
           }
-        }
 #endif
+        }
       }
 #endif // multichannel enabled (random color choice)
     }