Am Dienstag, den 30.08.2011, 21:19 +0200 schrieb robert: > > > > > It is possible to run 1, 2 or 4 processes per node. If I run 2 or 4 > > > processes I get: > > > Error! ***Memory allocation failed for SetUpCoarseGraph: gdata. > > > Requested size: 107754020 bytesError! ***Memory allocation failed for > > > SetUpCoarseGraph: gdata. Requested size: 107754020 bytesError! > > > > This function is in Metis, so you are running out of memory during the > > mesh partitioning stage. > > > > For one process, it's possible you are not running out of memory but > > are going into swap... which is making the code run really slowly. > > > > I'd try recompiling libmesh with parallel mesh enabled... but I'm > > still surprised that 4GB is not enough memory. > > > > Are the 2,994,336 elements in the mesh you posted before or after > > uniform refinement? > > > They are after the refinement which I calculated on my PC. > > Additionally to libmesh I wrote a class which reads some textfiles which > contain some geological information. This class also includes some > functions to handle them - I basically use them to set subdomains in the > system. Since it is the first time that I work in parallel, every node > also has a copy of this class. But, the total size of the textfiles > which are read in is about 4 MB - so, I didn't consider it too big to > make problems. But maybe you have a different opinion about it?? >
running the job with --enable-parmesh doesn't change. I run only one mpi-job per node but it is still quite slow. Robert > > ------------------------------------------------------------------------------ > Special Offer -- Download ArcSight Logger for FREE! > Finally, a world-class log management solution at an even better > price-free! And you'll get a free "Love Thy Logs" t-shirt when you > download Logger. Secure your free ArcSight Logger TODAY! > http://p.sf.net/sfu/arcsisghtdev2dev > _______________________________________________ > Libmesh-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/libmesh-users ------------------------------------------------------------------------------ Special Offer -- Download ArcSight Logger for FREE! Finally, a world-class log management solution at an even better price-free! And you'll get a free "Love Thy Logs" t-shirt when you download Logger. Secure your free ArcSight Logger TODAY! http://p.sf.net/sfu/arcsisghtdev2dev _______________________________________________ Libmesh-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/libmesh-users
