[Beowulf] mpirun issue

Reuti reuti at staff.uni-marburg.de
Wed Oct 22 14:17:47 EDT 2008


Am 21.10.2008 um 22:21 schrieb Luis Alejandro Del Castillo Riley:

> And with the ps -e f shows that is running fine until they crash  
> with the error broken pipe and killing signal

 From this I would assume that one processes crashed and you are  
facing only the follow-up error. Maybe because it ran out of memory  
or disk space. It might depend on the application, how it will  
distribute the data and maybe with ten nodes some array or so was  
getting too big over the runtime of the job.

When you can spot the node which crashes, maybe you can find  
something in /var/log/messages of the node.

-- Reuti


> On Tue, Oct 21, 2008 at 2:50 PM, Luis Alejandro Del Castillo Riley  
> <acastillo22 at gmail.com> wrote:
> hi
> yes i have 10 nodes each ones with intel xeon quad core so basicaly  
> are 4 processors per each node
>
>
>
> On Tue, Oct 21, 2008 at 7:53 AM, Reuti <reuti at staff.uni-marburg.de>  
> wrote:
> Hi,
>
> Am 21.10.2008 um 01:18 schrieb Luis Alejandro Del Castillo Riley:
>
>
> hi fellows i have a cluster with 1 master 10 nodes with intel Xeon  
> Quad core.
> Fedora core 6
> PGI 7.0-7
> mpich 1.2.5.2
>
> the last version of MPICH from 2005 is 1.2.7p1. For newer  
> installations I would suggest to look into Open MPI.
>
>
> machines.x86_64 with a 10 node names
>
> Means only the 10 nodes?
>
>
> when i try to run:
>  mpirun -v -arch x86_64  -keep_pg -nolocal -np 9 mm5.mpp
>
> i had no error but when a run with
>  mpirun -v -arch x86_64  -keep_pg -nolocal -np 10 mm5.mpp
>
> they take around 40 min to send me and error :
> bm_list_4667: (1526.781250) wakeup_slave: unable to interrupt slave  
> 0 pid 4666
>
> With so many time, I would suggest to login to all nodes and check  
> with:
>
> $ ps -e f
>
> (f w/o -) the ditribution and startup of the porcesses. Is it doing  
> nothing for 40 minutes or running fine until it crashes?
>
> -- Reuti
>
>

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