Carpet: let thread run on any core [n0,n0+num_threads) instead of binding to

single core

This is the behaviour of eg. Kraken's aprun --cc numa_node.
Avoids using omp_get_thread_num().

1 files changed, 3 insertions, 1 deletions

diff --git a/Carpet/Carpet/src/SetupGH.cc b/Carpet/Carpet/src/SetupGH.cc
index da68b3162..9e56e0878 100644
--- a/Carpet/Carpet/src/SetupGH.cc
+++ b/Carpet/Carpet/src/SetupGH.cc
@@ -356,7 +356,9 @@ namespace Carpet {
           {
             cpu_set_t cpumask;
             CPU_ZERO(&cpumask);
-            CPU_SET(n0 + omp_get_thread_num(), &cpumask);
+            for (int i=0; i<mynthreads; ++i) {
+              CPU_SET(n0 + i, &cpumask);
+            }
             int const ierr = sched_setaffinity(0, sizeof(cpumask), &cpumask);
             assert (not ierr);
           }