if (isLeft) {
recvlen = -1;
MPI_Probe(0, 0, intercomm, &status);
MPI_Get_count(&status, MPI_CHAR, &recvlen);
if (recvlen != (strlen(test_str) + 1)) {
if (isLeft) {
recvlen = -1;
MPI_Probe(0, 0, intercomm, &status);
MPI_Get_count(&status, MPI_CHAR, &recvlen);
if (recvlen != (strlen(test_str) + 1)) {