On Thu, May 17, 2007 at 10:28:49AM -0700, Russell L. Carter wrote: > I can run my single process MPI-IO program just fine > on a unix fs, but I get segfaults when I run it on the > pvfs2 fs. I'm not getting any useful debugging output > when I run it under mpiexec. Basically the app > opens a file, reads it, writes out the data as a new > file. It repeats this for 64 files. At some point in > the process, seemingly random, > the process crashes on file open, after a significant number of > reads and writes, such as 33, for example.
Hi Russell When you see this crash, are you running with one processor or many? are you opening the file with MPI_COMM_SELF, or using a larger communicator? If you can extract the I/O from the rest of your code, it might be easier to debug if you can send a testcase. ==rob -- Rob Latham Mathematics and Computer Science Division A215 0178 EA2D B059 8CDF Argonne National Lab, IL USA B29D F333 664A 4280 315B _______________________________________________ Pvfs2-users mailing list [email protected] http://www.beowulf-underground.org/mailman/listinfo/pvfs2-users
