follow dev14, 1. replace MPI_Isend with MPI_SendRcev; 2. new comm vec by malloc instead of cudaMallocHost in clover dslash (lattice_set.h) to cut down pinned memory use; not clear improve or not.
follow dev14, 1. replace MPI_Isend with MPI_SendRcev; 2. new comm vec by malloc instead of cudaMallocHost in clover dslash (lattice_set.h) to cut down pinned memory use; not clear improve or not.