[Pw_forum] file size limit exceeded
axel.kohlmeyer at theochem.ruhr-uni-bochum.de
Mon Mar 28 12:31:07 CEST 2005
On Mon, 28 Mar 2005 15:47:19 +0530 (IST) Jaita Paul wrote:
> while running a code (pw.x) it stopped giving the following message:
> + File size limit exceedednohup ../../bin/pw.x
> on checking the tmp directory i found the size of the wavefuntion file to
> be ~ 2GB.
> so if i am to run programs which requires such disk space how am i to do it?
> i'm running it on a 32 bit machine with the following specifications:
> P4- 3.0 GHz,4GB RAM.
the message may appear for a number of reasons with different resolutions:
- the easiest way to resolve it, it so plainly avoid the problem
and use a 64bit machine (e.g. opteron, itanium, alpha, etc.)
- your operating system/kernel/file system may not include the large file
support for 32bit systems:
-> update to a newer distribution
- your fortran compiler runtime does not support large files:
-> update to a newer compiler
- maximum file size has been limited by your sysadmin:
have a look at the output of 'ulimit -s'.
if there is a limit for the file size, try 'ulimit -f unlimited'
and if that does not help, talk to your sysadmin.
- if all of the above are not doable, you can still try running
in parallel. each parallel instance will write its own, smaller
wavefunction file. this may however give rise to problems on
postprocessing (see the mailing list archive) and will reduce
the performance of pw.x significantly.
> Pw_forum mailing list
> Pw_forum at pwscf.org
Axel Kohlmeyer e-mail: axel.kohlmeyer at theochem.ruhr-uni-bochum.de
Lehrstuhl fuer Theoretische Chemie Phone: ++49 (0)234/32-26673
Ruhr-Universitaet Bochum - NC 03/53 Fax: ++49 (0)234/32-14045
D-44780 Bochum http://www.theochem.ruhr-uni-bochum.de
If you make something idiot-proof, the universe creates a better idiot.
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