oshmem/shmem: Allocate and exchange base segment address beforehand#13029

bwbarrett merged 1 commit intoopen-mpi:v4.1.xopen-mpi/ompi:v4.1.xfrom

tvegas1:oshmem_base_exchange.v4.1.xtvegas1/ompi:oshmem_base_exchange.v4.1.xCopy head branch name to clipboard