Open kevinstratford opened 1 month ago
There is no portable way to identify, at run time, whether a GPU aware MPI is present.
At the moment we have the compile time switch
#ifdef HAVE_OPENMPI_ /* This provides MPIX_CUDA_AWARE_SUPPORT .. */ #include "mpi-ext.h" #endif
(e.g., field.c) which is relevant for OPENMPI where the non-standard mpi-ext.h is available.
field.c
mpi-ext.h
It is desirable to isolate this rather than have a proliferation of conditional compilation. This might live with the pe_t, e.g.,
pe_t
pe_have_gpu_aware_mpi()
This may be separate from whether the user wasnts to use it or not.
There is no portable way to identify, at run time, whether a GPU aware MPI is present.
At the moment we have the compile time switch
(e.g.,
field.c) which is relevant for OPENMPI where the non-standardmpi-ext.his available.It is desirable to isolate this rather than have a proliferation of conditional compilation. This might live with the
pe_t, e.g.,This may be separate from whether the user wasnts to use it or not.