On Wed, 8 Jan 2014, Dafang Wang wrote: > When running the libmesh (and Petsc) in the debug mode (flag= -g), > both the desktop and the cluster returned the same convergence > results. However, when running libmesh in the RelWithDebugInfo mode > (flag= -O2), the desktop yielded good convergence whereas the > cluster yielded bad convergence. > > The cluster uses a specific Intel compiler which is different from the > desktop.
Turning off -O2 can really hurt, but you might be able to get away with enabling most of Intel's optimizations while still not ruining your results: try adding "-fp-model precise" ? --- Roy ------------------------------------------------------------------------------ Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how application performance affects their revenue. With AppDynamics, you get 100% visibility into your Java,.NET, & PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! http://pubads.g.doubleclick.net/gampad/clk?id=84349831&iu=/4140/ostg.clktrk _______________________________________________ Libmesh-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/libmesh-users
