Thanks for sharing! But I don't know how to build mpi-io-test.c correctly. How to configure and make it correctly? I use mpicc and make this file alone and get a runable program but it always set the filesize as 16*1024*1024. I think i have done something wrong.
Thanks again 2013/3/22 Rob Latham <[email protected]> > 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 >
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