#!/usr/bin/perl -w
use strict;
use Config;
use Cwd;
my $file = "t/06_sendrecv_flt.pl";
local(*OUTF);
open(OUTF, ">$file") or die "Cannot open $file for writing: $!\n";
print OUTF $Config{startperl} . " -I" . Cwd::cwd . "/blib/arch" .
" -I" . Cwd::cwd . "/blib/lib\n";
print "Writing $file\n";
while(<DATA>) { print OUTF $_ }
close(OUTF);
chmod(0755, $file);
__END__
$|=1;
use Parallel::MPI qw(:all);
MPI_Init();
$my_rank = MPI_Comm_rank(MPI_COMM_WORLD);
$p = MPI_Comm_size(MPI_COMM_WORLD);
#print "pid = $$, rank = $my_rank\n";
$tag = 0;
if ($my_rank != 0) {
$message = 0.31337;
$dest = 0;
printf("Sending: \"%s\" to $dest\n", $message);
MPI_Send(\$message, 1, MPI_FLOAT, $dest, $tag,
MPI_COMM_WORLD);
} else {
# my_rank == 0
for $source (1..$p-1) {
@status = MPI_Recv(\$message, 1, MPI_FLOAT, $source, $tag,
MPI_COMM_WORLD);
printf("Recieved: \"%s\" from $source\n", $message);
printf("Status: (" . (join ', ',@status) . ")\n");
if($message == 0.31337) {
print "ok 1\n";
} else {
print "not ok 1\n";
}
# (count,MPI_SOURCE,MPI_TAG,MPI_ERROR)
}
}
MPI_Finalize();