When an application is not using multiple threads to call into MPI, we can
safely ask for FI_THREAD_DOMAIN setting from the provider as it should
translate to the least amount of locking in provider.
Conversely, for applications using THREAD_MULTIPLE, explicitly ask for
FI_THREAD_SAFE to prevent race conditions.
Signed-off-by: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@intel.com>
(cherry picked from commit 5cbcae79d8619b99e4768578c8d11d3149e5c7c8)
Signed-off-by: Brian Barrett <bbarrett@amazon.com>
ee3f6ab841