[PATCH] D99003: [libomptarget] [amdgpu] Change default number of teams per computation unit

[Dhruva Chakrabarti via Phabricator via llvm-commits]

dhruvachak updated this revision to Diff 355386.
dhruvachak added a comment.

rebase


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D99003/new/

https://reviews.llvm.org/D99003

Files:
  openmp/libomptarget/plugins/amdgpu/src/rtl.cpp


Index: openmp/libomptarget/plugins/amdgpu/src/rtl.cpp
===================================================================
--- openmp/libomptarget/plugins/amdgpu/src/rtl.cpp
+++ openmp/libomptarget/plugins/amdgpu/src/rtl.cpp
@@ -70,6 +70,10 @@
 }
 }
 
+// Heuristic parameters used for kernel launch
+// Number of teams per CU to allow scheduling flexibility
+static const unsigned DefaultTeamsPerCU = 4;
+
 int print_kernel_trace;
 
 #ifdef OMPTARGET_DEBUG
@@ -1083,7 +1087,7 @@
        DeviceInfo.EnvNumTeams);
   } else {
     char *TeamsPerCUEnvStr = getenv("OMP_TARGET_TEAMS_PER_PROC");
-    int TeamsPerCU = 1; // default number of teams per CU is 1
+    int TeamsPerCU = DefaultTeamsPerCU;
     if (TeamsPerCUEnvStr) {
       TeamsPerCU = std::stoi(TeamsPerCUEnvStr);
     }


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