--- /dev/null
+/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */
+/*
+ *
+ * (C) 2003 by Argonne National Laboratory.
+ * See COPYRIGHT in top-level directory.
+ */
+#include "mpi.h"
+#include <stdio.h>
+#include "mpitest.h"
+
+/*
+static char MTEST_Descrip[] = "Test of broadcast with various roots and datatypes";
+*/
+
+int main( int argc, char *argv[] )
+{
+ int errs = 0, err;
+ int rank, size, root;
+ int minsize = 2, count;
+ MPI_Comm comm;
+ MTestDatatype sendtype, recvtype;
+
+ MTest_Init( &argc, &argv );
+
+ /* The following illustrates the use of the routines to
+ run through a selection of communicators and datatypes.
+ Use subsets of these for tests that do not involve combinations
+ of communicators, datatypes, and counts of datatypes */
+ while (MTestGetIntracommGeneral( &comm, minsize, 1 )) {
+ if (comm == MPI_COMM_NULL) continue;
+
+ /* Determine the sender and receiver */
+ MPI_Comm_rank( comm, &rank );
+ MPI_Comm_size( comm, &size );
+
+ /* To improve reporting of problems about operations, we
+ change the error handler to errors return */
+ MPI_Errhandler_set( comm, MPI_ERRORS_RETURN );
+
+ /* The max value of count must be very large to ensure that we
+ reach the long message algorithms */
+ for (count = 1; count < 280000; count = count * 4) {
+ while (MTestGetDatatypes( &sendtype, &recvtype, count )) {
+ for (root=0; root<size; root++) {
+ if (rank == root) {
+ sendtype.InitBuf( &sendtype );
+ err = MPI_Bcast( sendtype.buf, sendtype.count,
+ sendtype.datatype, root, comm );
+ if (err) {
+ errs++;
+ MTestPrintError( err );
+ }
+ }
+ else {
+ recvtype.InitBuf( &recvtype );
+ err = MPI_Bcast( recvtype.buf, recvtype.count,
+ recvtype.datatype, root, comm );
+ if (err) {
+ errs++;
+ fprintf( stderr, "Error with communicator %s and datatype %s\n",
+ MTestGetIntracommName(),
+ MTestGetDatatypeName( &recvtype ) );
+ MTestPrintError( err );
+ }
+ err = MTestCheckRecv( 0, &recvtype );
+ if (err) {
+ errs += errs;
+ }
+ }
+ }
+ MTestFreeDatatype( &recvtype );
+ MTestFreeDatatype( &sendtype );
+ }
+ }
+ MTestFreeComm( &comm );
+ }
+
+ MTest_Finalize( errs );
+ MPI_Finalize();
+ return 0;
+}