Dear All,
(follows a previous mail)
I don't understand the strange behavior of this small code: sometimes it ends,
sometimes not.
The output of MPI_Finalized is 1 (for each processes if n>1), but the code
doesn't end. I am forced to use Ctrl-C.
I compiled it with the command line:
"mpicc --std=c99" / gcc is 4.5, on a Quad-Core AMD Opteron(tm) Processor 8356
"mpiexec -n 1 a.out" or "mpiexec -n 2 a.out" to run the code.
"ps aux" returns that the program is in Sl+ state.
Sometimes, I can see also a line like this:
p10015 6892 0.1 0.0 43376 1828 ? Ssl 14:50 0:00 orted --hnp
--set-sid --report-uri 8 --singleton-died-pipe 9
Is this a bug? Do I do something wrong?
If you have any tips...
Thank you.
---------
#include "stdio.h"
#include "mpi.h"
int
main(int argc, char *argv[])
{
int my_num, mpi_size ;
int flag ;
MPI_Init(&argc, &argv) ;
MPI_Comm_rank(MPI_COMM_WORLD, &my_num);
printf("%d calls MPI_Finalize()\n\n\n", my_num) ;
MPI_Finalize() ;
MPI_Finalized(&flag) ;
printf("MPI finalized: %d\n", flag) ;
return 0 ;
}
-------
--
Yves Caniou
Associate Professor at Université Lyon 1,
Member of the team project INRIA GRAAL in the LIP ENS-Lyon,
Délégation CNRS in Japan French Laboratory of Informatics (JFLI),
* in Information Technology Center, The University of Tokyo,
2-11-16 Yayoi, Bunkyo-ku, Tokyo 113-8658, Japan
tel: +81-3-5841-0540
* in National Institute of Informatics
2-1-2 Hitotsubashi, Chiyoda-ku, Tokyo 101-8430, Japan
tel: +81-3-4212-2412
http://graal.ens-lyon.fr/~ycaniou/
