On 05/21/2014 05:50 AM, CANELA-XANDRI Oriol wrote:

Ok, so it seems a problem with parallel access to this file system. Other network file systems like NFS, for instance, should not be a problem, right?

Do you know if there is some method just for checking that this kind of problems will not arise in a particular system (with an 'unknown' file system)?

you can use NFS if you must but NFS is also not a true parallel file system. One could simply write to a local file system for a start. The PVFS parallel file system is another option. It's free and easy to deploy. Many sites have Lustre, though it is a bit more complicated. ==rob -- Rob Latham Mathematics and Computer Science Division Argonne National Lab, IL USA