This looks like a question for the MPICH2 developers.
Specifically, it looks like you are using MPICH2, not Open MPI. They
are entirely different software packages maintained by different
people -- we're not really qualified to answer questions about
MPICH2. The top-level API is the same between the two (meaning that
you can compile and run your app in either Open MPI or MPICH2), but
that's where the similarities end.
On Dec 23, 2008, at 2:07 PM, Win Than Aung wrote:
PS： extra question
qsub -I -q standby -l select=1:ncpus=8
mpirun -np 4 ./hello
running mpdallexit on steele-a137.rcac.purdue.edu
LAUNCHED mpd on steele-a137.rcac.purdue.edu via
RUNNING: mpd on steele-a137.rcac.purdue.edu
steele-a137.rcac.purdue.edu_36959 (172.18.24.147)
time for 100 loops = 2.98023223877e-05 seconds
too few entries in machinefile
the mpi program supposed to print 4 hello msg since there r four
processors.
but for some reasons, it doesn't print
thanks
winthan
On Tue, Dec 23, 2008 at 1:23 PM, Eugene Loh <eugene....@sun.com>
wrote:
Win Than Aung wrote:
MPI_Recv(....) << is it possible to receive the message sent from
other sources? I tried MPI_ANY_SOURCE in place of source but it
doesn't work out
Yes of course. Can you send a short example of what doesn't work?
The example should presumably be less than about 20 lines. Here is
an example that works:
% cat a.c
#include <stdio.h>
#include <mpi.h>
int main(int argc, char **argv) {
int np, me, sbuf = -1, rbuf = -2;
MPI_Init(&argc,&argv);
MPI_Comm_size(MPI_COMM_WORLD,&np);
MPI_Comm_rank(MPI_COMM_WORLD,&me);
if ( np < 2 ) MPI_Abort(MPI_COMM_WORLD,-1);
if ( me == 1 ) MPI_Send(&sbuf,1,MPI_INT,0,344,MPI_COMM_WORLD);
if ( me == 0 ) {
MPI_Recv(&rbuf,1,MPI_INT,MPI_ANY_SOURCE,
344,MPI_COMM_WORLD,MPI_STATUS_IGNORE);
if ( rbuf == sbuf ) printf("Send/Recv self passed\n");
else printf("Send/Recv self FAILED\n");
}
MPI_Finalize();
return 0;
}
% mpicc a.c
% mpirun -np 2 a.out
Send/Recv self passed
%
_______________________________________________
users mailing list
us...@open-mpi.org
http://www.open-mpi.org/mailman/listinfo.cgi/users
_______________________________________________
users mailing list
us...@open-mpi.org
http://www.open-mpi.org/mailman/listinfo.cgi/users
--
Jeff Squyres
Cisco Systems
