int MPIAPI MPI_Comm_group( MPI_Comm comm, _Out_ MPI_Group *group ); 参数 comm 要基于组的通信器。 group [out] 返回时,包含与指定通信器关联的组的句柄。 返回值 返回成功 时MPI_SUCCESS。 否则,返回值为错误代码。 在Fortran 中,返回值存储在 IERROR 参数中。 Fortran FORTRAN 复制 MPI_COMM_...
to avoid potential race conditions between successive calls to MPI_Comm_create_from_group and MPI_Intercomm_create_from_groups when using the same tag argument value. The PMIx group constructor grp string argument has different semantics from the tag requirements for these MPI constructors, so use...
Turns out we need parts of 95e3323 as well as 46ff698 to address some race conditions brought out by mpi4py comm create from group related tests.