Bad mpirun behaviour

Maybe I explained not so well my problem: when I use mpirun -n 8 .HEART_MR, I expect to launch a parallel job on eight cores, and single process knows how many processes are running and its rank. Indeed, I obtain eight processes, that are inpidendent from each other.

In other words, my executable apply a domain decomposition over the number of the cores that I choose (if I use mpirun from openmpi). In the wrong case (with intel mpi), each process is associated to the whole computational domain.

Giacomo Rossi
PhD Student, Space Engineer
Mechanical and Aerospace Engineering Department
University of Rome "Sapienza"

Here you have the results of the commands that you have requested to me:

nunzio@ALTAIR:~> mpirun -n 8 ./hello_world
Hello World :-)
Hello World :-)
Hello World :-)
Hello World :-)
Hello World :-)
Hello World :-)
Hello World :-)
Hello World :-)

nunzio@ALTAIR:~> env | grep I_MPI
I_MPI_ROOT=/opt/intel2/impi/4.1.0.024

Here some additional informations; this is a simple "hello world2 program with mpi

program hello
include 'mpif.h'
integer rank, size, ierror, tag, status(MPI_STATUS_SIZE)

call MPI_INIT(ierror)
call MPI_COMM_SIZE(MPI_COMM_WORLD, size, ierror)
call MPI_COMM_RANK(MPI_COMM_WORLD, rank, ierror)
print*, 'node', rank, ': Hello world'
call MPI_FINALIZE(ierror)
end

and this is the result that I obtained when launch mpirun -n 8 prova_mpi:

nunzio@ALTAIR:~> mpirun -n 8 ./prova_mpi
node 0 : Hello world
node 0 : Hello world
node 0 : Hello world
node 0 : Hello world
node 0 : Hello world
node 0 : Hello world
node 0 : Hello world
node 0 : Hello world

Thank you!

Giacomo Rossi

Unfortunately I haven't this directory...

nunzio@ALTAIR:/opt/intel2/impi/4.1.0.024> lt
totale 152
-rw-r--r-- 1 root root 9398 31 ago 16.48 README.txt
-rw-r--r-- 1 root root 28556 31 ago 16.48 Doc_Index.html
-rw-r--r-- 1 root root 2770 31 ago 16.48 redist-rt.txt
-rw-r--r-- 1 root root 28728 31 ago 16.48 mpi-rtEULA.txt
-rw-r--r-- 1 root root 491 7 set 13.12 mpi-rtsupport.txt
-rwxr-xr-x 1 root root 41314 7 set 13.12 uninstall.sh
-rw-r--r-- 1 root root 3036 8 nov 11.51 uninstall.log
lrwxrwxrwx 1 root root 8 8 nov 11.55 etc -> ia32/etc
lrwxrwxrwx 1 root root 8 8 nov 11.55 bin -> ia32/bin
drwxr-xr-x 5 root root 4096 8 nov 11.55 ia32
lrwxrwxrwx 1 root root 8 8 nov 11.55 lib -> ia32/lib
drwxr-xr-x 3 root root 4096 8 nov 11.55 data
drwxr-xr-x 4 root root 4096 8 nov 11.55 doc
lrwxrwxrwx 1 root root 11 8 nov 11.55 etc64 -> intel64/etc
lrwxrwxrwx 1 root root 11 8 nov 11.55 bin64 -> intel64/bin
drwxr-xr-x 5 root root 4096 8 nov 11.55 intel64
lrwxrwxrwx 1 root root 11 8 nov 11.55 lib64 -> intel64/lib
drwxr-xr-x 5 root root 4096 8 nov 11.55 mic
-rw-r--r-- 1 root root 340 8 nov 11.55 impi.uninstall.config

I've only the runtime.