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Error while running openfoam on CRAY XE6

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Old   April 15, 2011, 09:45
Default Error while running openfoam on CRAY XE6
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Suresh kumar Kannan
Join Date: Mar 2009
Location: Luxembourg, Luxembourg, Luxembourg
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Hello ,
I have been trying to run a big case of app 33 million cells on a CRAY XE6 machine using the script:
#PBS -N Q04_large_bcchanged_final
#PBS -l mppwidth=64
#PBS -l mppnppn=16
#PBS -l walltime=3:00:00
# Change to the direcotry that the job was submitted from
aprun -n 64 -N 16 interFoam -parallel > log

But i always get an error message:
[nid00073:09463] opal_os_dirpath_create: Error: Unable to create the sub-directory (/tmp/openmpi-sessions-itlkann@nid00073_0) of (/tmp/openmpi-sessions-itlkann@nid00073_0/31169/0/0), mkdir failed [1]
[nid00073:09465] opal_os_dirpath_create: Error: Unable to create the sub-directory (/tmp/openmpi-sessions-itlkann@nid00073_0) of (/tmp/openmpi-sessions-itlkann@nid00073_0/31183/0/0), mkdir failed [1]
[nid00073:09463] [[31169,0],0] ORTE_ERROR_LOG: Error in file util/session_dir.c at line 101

looks like I don't have permissions to generate a directory in /tmp. But i checked the permissions and:
drwxrwxrwt 9 root root 16120 2011-04-15 15:40 tmp

i am not sure why this problem is caused, because I actually compiled openfoam on a different front end on a different cluster, but my files are also accessible from the CRAY front end,probably because they are mounted here.

Any suggestions on how to eliminate this error would be helpful.

K.Suresh kumar
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