Hello there,
I have a problem moving files from my local harddrive to a NFS share
using a Python script.
The script is used to run a model which produces large (~500MB) binary
output files. The model itself is a Fortran program, and I call it from
my script using the line
os.spawnlp(os.P_WAIT, 'time', 'time', OPT.binary)
where OPT.binary is the filename to be run. This works flawlessly.
However, in order not to clutter up my harddrive, I want to move the
generated files to a network location after each model run. To save
time, I use os.P_NOWAIT here:
os.spawnlp(os.P_NOWAIT, 'mv', 'mv', LOCALFILENAME, REMOTEFILENAME)
where LOCALFILENAME is some string like '/home/andreas/model.bin' and
REMOTEFILENAME is some string like '/home/nfs/model-output/'.
Here I have the problem that after about every 10th model run, I get an
error saying
Traceback (most recent call last):
File "../../../../pyiup/b3dctm/run_b3dctm.py", line 281, in <module>
main()
File "../../../../pyiup/b3dctm/run_b3dctm.py", line 71, in main
copy_model_output()
File "../../../../pyiup/b3dctm/run_b3dctm.py", line 162, in
copy_model_output
os.spawnlp(os.P_NOWAIT, 'mv', 'mv', get_base_filename(RUNDATE) +
'.pdg',
os.path.join(OPT.datastoragepath,OPT.modelname,OPT.runname,RUNDATE.strftime('%Y/
%m')))
File "/usr/lib64/python2.5/os.py", line 635, in spawnlp
return spawnvp(mode, file, args)
File "/usr/lib64/python2.5/os.py", line 584, in spawnvp
return _spawnvef(mode, file, args, None, execvp)
File "/usr/lib64/python2.5/os.py", line 530, in _spawnvef
pid = fork()
OSError: [Errno 12] Cannot allocate memory
And my Python script dies.
Is there anyone who can help me with this problem? I'm on Ubuntu 8.04
64bit with Python 2.5. I am willing to accept that the moving of the
files does not always work, but then it would be really helpful if I
could somehow prevent my script from dying and just try the moving again.
Any help is greatly appreciated!
Cheers,
Andreas
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