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
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
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
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:
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
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
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
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
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_
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
10 matches
Mail list logo
