I thought this is OpenMPI what I was using. I do not have permission to
install something, only in my home directory. All tutorials I found
started the environment with the lamboot command. Whats the difference
using only OpenMPI?
$ whereis openmpi
openmpi: /etc/openmpi /usr/lib/openmpi /usr/lib64/openmpi /usr/share/openmpi
$ echo $LD_LIBRARY_PATH
:/usr/lib/openmpi/lib:/usr/lib64/openmpi/lib:
$ whereis mpirun
mpirun: /usr/bin/mpirun.mpich /usr/bin/mpirun /usr/bin/mpirun.lam
/usr/bin/mpirun.openmpi
$ ll /usr/bin/mpirun
lrwxrwxrwx 1 root root 24 14. Aug 2008 /usr/bin/mpirun -> /usr/bin/orterun
$ ll /usr/bin/orterun
-rwxr-xr-x 1 root root 39280 25. Aug 2008 /usr/bin/orterun
$ ll /usr/bin/mpirun.openmpi
lrwxrwxrwx 1 root root 7 5. Sep 2008 /usr/bin/mpirun.openmpi -> orterun
When I run mpirun without starting the environment by using lamboot, it
says:
ocs@frost:~$ mpicc -o mpitest mpitest.c && mpirun -np 1 -machinefile
machines ./mpitest
-----------------------------------------------------------------------------
It seems that there is no lamd running on the host frost.
This indicates that the LAM/MPI runtime environment is not operating.
The LAM/MPI runtime environment is necessary for MPI programs to run
(the MPI program tired to invoke the "MPI_Init" function).
Please run the "lamboot" command the start the LAM/MPI runtime
environment. See the LAM/MPI documentation for how to invoke
"lamboot" across multiple machines.
-----------------------------------------------------------------------------
Thanks in advance,
Oliver
Jeff Squyres wrote:
If you're just starting with MPI, is there any chance you can upgrade to Open
MPI instead of LAM/MPI? All of the LAM/MPI developers moved to Open MPI years
ago.
ann/lib:/home/bude/ocs/fann
On Jul 8, 2010, at 6:01 AM, Oliver Stolpe wrote:
Hello there,
I have a problem setting up MPI/LAM. Here we go:
I start lam with the lamboot command successfully:
$ lamboot -v hostnames
LAM 7.1.2/MPI 2 C++/ROMIO - Indiana University
n-1<11960> ssi:boot:base:linear: booting n0 (frost)
n-1<11960> ssi:boot:base:linear: booting n1 (hurricane)
n-1<11960> ssi:boot:base:linear: booting n2 (hail)
n-1<11960> ssi:boot:base:linear: booting n3 (fog)
n-1<11960> ssi:boot:base:linear: booting n4 (rain)
n-1<11960> ssi:boot:base:linear: booting n5 (thunder)
n-1<11960> ssi:boot:base:linear: finished
Ok, all is fine. I test a command (hostname in this case):
$ mpirun -v --hostfile hostnames hostname
thunder
rain
frost
fog
hurricane
hail
Works. I write a hello world program for testing:
#include <mpi.h>
#include <stdio.h>
int main(int argc, char** argv) {
unsigned int rank;
unsigned int size;
MPI_Init(&argc, &argv);
MPI_Comm_rank(MPI_COMM_WORLD, &rank);
MPI_Comm_size(MPI_COMM_WORLD, &size);
printf("Hello, World. I am %u of %u\n", rank, size);
MPI_Finalize();
return 0;
}
I compile and run it:
$ mpicc -o mpitest mpitest.c && mpirun -v --hostfile hostnames ./mpitest
Hello, World. I am 0 of 1
Hello, World. I am 0 of 1
Hello, World. I am 0 of 1
Hello, World. I am 0 of 1
Hello, World. I am 0 of 1
Hello, World. I am 0 of 1
And I don't get it why everyone has the rank 0 and the size is only 1. I
followed many tutorials and i proved it right many times. Does anyone
has an idea?
Thanks in advance!
Oliver
Some infos:
$ lamboot -v
LAM 7.1.2/MPI 2 C++/ROMIO - Indiana University
n-1<12088> ssi:boot:base:linear: booting n0 (localhost)
n-1<12088> ssi:boot:base:linear: finished
ocs@frost:~$ lamboot -V
LAM 7.1.2/MPI 2 C++/ROMIO - Indiana University
Arch: x86_64-pc-linux-gnu
Prefix: /usr/lib/lam
Configured by: buildd
Configured on: Sun Apr 6 01:43:15 UTC 2008
Configure host: excelsior
SSI rpi: crtcp lamd sysv tcp usysv
$ mpirun -V
mpirun (Open MPI) 1.2.7rc2
Report bugs to http://www.open-mpi.org/community/help/
$ mpicc -v
Using built-in specs.
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian
4.3.2-1.1' --with-bugurl=file:///usr/share/doc/gcc-4.3/README.Bugs
--enable-languages=c,c++,fortran,objc,obj-c++ --prefix=/usr
--enable-shared --with-system-zlib --libexecdir=/usr/lib
--without-included-gettext --enable-threads=posix --enable-nls
--with-gxx-include-dir=/usr/include/c++/4.3 --program-suffix=-4.3
--enable-clocale=gnu --enable-libstdcxx-debug --enable-objc-gc
--enable-mpfr --enable-cld --enable-checking=release
--build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu
Thread model: posix
gcc version 4.3.2 (Debian 4.3.2-1.1)
_______________________________________________
users mailing list
us...@open-mpi.org
http://www.open-mpi.org/mailman/listinfo.cgi/users
