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Merge pull request #2846 from stanmoore1/mpich

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Add logic for GPU-enabled MPICH to Kokkos package
This commit is contained in:
Axel Kohlmeyer
2021-07-23 14:42:18 -04:00
committed by GitHub
parent 8889fa316e 1bc0a5ca8a
commit 0de2167fb6
1 changed files with 7 additions and 2 deletions
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9
src/KOKKOS/kokkos.cpp
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@ -293,9 +293,14 @@ KokkosLMP::KokkosLMP(LAMMPS *lmp, int narg, char **arg) : Pointers(lmp)
error->warning(FLERR,"MVAPICH2 'MV2_USE_CUDA' environment variable is not set. Disabling GPU-aware MPI");
// pure MPICH or some unsupported MPICH derivative
#elif defined(MPICH) && !defined(MVAPICH2_VERSION)
if (me == 0)
error->warning(FLERR,"Detected MPICH. Disabling GPU-aware MPI");
char* str;
gpu_aware_flag = 0;
if ((str = getenv("MPICH_GPU_SUPPORT_ENABLED")))
if ((strcmp(str,"1") == 0))
gpu_aware_flag = 1;
if (!gpu_aware_flag && me == 0)
error->warning(FLERR,"Detected MPICH. Disabling GPU-aware MPI");
#else
if (me == 0)
error->warning(FLERR,"Kokkos with CUDA, HIP, or SYCL assumes CUDA-aware MPI is available,"