Consider this Fortran program snippet:
program test
! everybody except rank=0 exits.
call mpi_init(ierr)
call mpi_comm_rank(MPI_COMM_WORLD,irank,ierr)
if (irank /= 0) then
call mpi_finalize(ierr)
stop
endif
! rank 0 tries to set number of OpenMP threads to 4
call omp_set_nu
Hi Reza
It is hard to guess with little information.
Other things you could check:
1) Are you allowed to increase the stack size (say,
by the sys admin in limits.conf)?
If using a job queue system,
does it limit the stack size somehow?
2) If you can compile and
run the Open MPI examples (hello_
Here is a v1.6 port of what was committed to the trunk. Let me know if/how it
works for you. The option you will want to use is:
mpirun -mca opal_set_max_sys_limits stacksize:unlimited
or whatever number you want to give (see ulimit for the units). Note that you
won't see any impact if you run
I agree with Gus - check your stack size. This isn't occurring in OMPI itself,
so I suspect it is in the system setup.
On Apr 3, 2013, at 10:17 AM, Reza Bakhshayeshi wrote:
> Thanks for your answers.
>
> @Ralph Castain:
> Do you mean what error I receive?
> It's the output when I'm running t
Thanks for your answers.
@Ralph Castain:
Do you mean what error I receive?
It's the output when I'm running the program:
*** Process received signal ***
Signal: Segmentation fault (11)
Signal code: Address not mapped (1)
Failing at address: 0x1b7f000
[ 0] /lib/x86_64-linux-gnu/libc.so.6
That would do it.
Thanks!
Now to make even the normal ones work
Brock Palen
www.umich.edu/~brockp
CAEN Advanced Computing
bro...@umich.edu
(734)936-1985
On Apr 3, 2013, at 10:31 AM, Ralph Castain wrote:
> Looking at the source code, it is because those other collectives aren't
> imple
Hi Reza
Check the system stacksize first ('limit stacksize' or 'ulimit -s').
If it is small, you can try to increase it
before you run the program.
Say (tcsh):
limit stacksize unlimited
or (bash):
ulimit -s unlimited
I hope this helps,
Gus Correa
On 04/03/2013 10:29 AM, Ralph Castain wrote:
Looking at the source code, it is because those other collectives aren't
implemented yet :-)
On Apr 2, 2013, at 12:07 PM, Brock Palen wrote:
> We are starting to play with FCA on our Mellonox based IB fabric.
>
> I noticed from ompi_info that FCA support for a lot of collectives are
> disabl
Could you perhaps share the stacktrace from the segfault? It's impossible to
advise you on the problem without seeing it.
On Apr 3, 2013, at 5:28 AM, Reza Bakhshayeshi wrote:
> Hi
> I have installed HPCC benchmark suite and openmpi on a private cloud
> instances.
> Unfortunately I get Seg
Hi
I have installed HPCC benchmark suite and openmpi on a private cloud
instances.
Unfortunately I get Segmentation fault error mostly when I want to run it
simultaneously on two or more instances with:
mpirun -np 2 --hostfile ./myhosts hpcc
Everything is on Ubuntu server 12.04 (updated)
and th
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