On Thu, Mar 14, 2013 at 02:47:07AM +0800, xihuang sun wrote: > Can anyone show me a simple io-test result? > I'm running orangefs on 4 nodes and i'm doing some io-tests. > I made this test by myself so i'm not confident with my results. > or can anyone give a test benchmark which can be performed on orangefs?
orangefs comes with mpi-io-test, a test we've used for a long long time to measure performance. http://www.orangefs.org/fisheye/orangefs/browse/orangefs/trunk/test/client/mpi-io/mpi-io-test.c?hb=true IOR is nowadays the canonical performance benchmark. > Another question is how can i make non-contiguous io test? IOR has parameters to request a strided (non-contiguous) I/O test. You can also try 'coll_perf.c', which is part of the MPICH distribution. If you use coll_perf, you will have to increase the array size: it too is an old benchmark and sizes that once were challenging to file systems are now, ten years later, trivial. ==rob -- Rob Latham Mathematics and Computer Science Division Argonne National Lab, IL USA _______________________________________________ Pvfs2-users mailing list [email protected] http://www.beowulf-underground.org/mailman/listinfo/pvfs2-users
