Usage
probe(rank.source = .pbd_env$SPMD.CT$rank.source,
tag = .pbd_env$SPMD.CT$tag, comm = .pbd_env$SPMD.CT$comm,
status = .pbd_env$SPMD.CT$status)
iprobe(rank.source = .pbd_env$SPMD.CT$rank.source,
tag = .pbd_env$SPMD.CT$tag, comm = .pbd_env$SPMD.CT$comm,
status = .pbd_env$SPMD.CT$status)