I'm doing my first experiments using pvfs2 (latest down oadable version) on a 10 PC linux cluster (Mandriva 2.6.12-12mdk-i686-up-4GB kernel). I have all the PCs configured as both server and client, and one configured as a metadata server.
I'm running a MPI application (electromagnetic simulator written in Fortran 90 and compiled with MPICH2) with good improvements in the I/O performances.
I'm experiencing some problems in the reading and copying procedures; my simulator needs to read a binary file previously written on the pvfs2 filesystem (by a non parallel application) and sometimes fails reading this file. If the reading procedure is done on the same file written by the same application on another filesystem (ext3), everything works correctly.
Another strange behavior is when I'm trying to copy a text file from the pvfs2 filesystem to another one (ext3); the file is complete when edited by vi on the pvfs2 filesystem, but is not complete when copied (and edited by vi) on the ext3 filesystem where it has been copied.
I have the pvfs2 configured leaving unchanged the pvfs2-fs.conf file.
Do I need to modify/ try some different parameter configuration?
Thanks in advance.
gaetano
Gaetano Bellanca - Department of Engineering - University of Ferrara
Via Saragat, 1 - 44100 - Ferrara - ITALY
Voice: +39 0532 97.48.09 Fax: +39 0532 97.48.70
mailto:[EMAIL PROTECTED]
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