On Sun, Jan 15, 2006 at 03:46:37PM +0100, Gaetano Bellanca wrote: > 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.
can you tell (maybe by comparing file sizes or md5sum) if the serial application is generating the same file on both pvfs2 and ext3? Is your parallel application using MPI-IO or is it using posix? Which version of MPICH2 are you using? Did you build it yourself, or is it the version that came with mandriva? > 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. Instead of using vi, can you use 'cmp' or 'diff' or 'md5sum' ? This sounds like a pretty bad bug, but we copy files to and from pvfs2 all the time and haven't seen this behavior. Can you send me the commands you are running? I'd like to reproduce it here if i can. ==rob -- Rob Latham Mathematics and Computer Science Division A215 0178 EA2D B059 8CDF Argonne National Labs, IL USA B29D F333 664A 4280 315B _______________________________________________ PVFS2-users mailing list [email protected] http://www.beowulf-underground.org/mailman/listinfo/pvfs2-users
