OPENMP/GOTOBLAS/OPENBLAS_NUM_THREADS=1? Also, waiting for Jed's laughing.
On Fri, Sep 12, 2014 at 12:39 PM, John Peterson <[email protected]> wrote: > On Fri, Sep 12, 2014 at 10:29 AM, Jed Brown <[email protected]> wrote: > > Rodrigo Broggi <[email protected]> writes: > >> Jed, > >> I've installed PETSc through Ubuntu Software Center so there is no > Makefile > >> in my PETSC_DIR (or I am looking for in the wrong directory), and this > is > >> why I can't run the "make streams" command. > > > > Okay, you can download the PETSc source or just run the benchmark on the > > STREAM website > > > > http://www.cs.virginia.edu/stream/ > > > >> ./result-opt on a linux-gnu-c-opt named > rodrigo-HP-Pavilion-g6-Notebook-PC > >> with 4 processors, by rodrigo Fri Sep 12 17:44:22 2014 > >> Using Petsc Release Version 3.4.2, Jul, 02, 2013 > > > > It's running in parallel, just don't get any speedup because bandwidth > > is the bottleneck. > > This fancy Mac Pro computer I'm using has terrible memory bandwidth > speedup beyond 3 procs... > > > https://drive.google.com/file/d/0B9BK7pg8se_iMjNKdWdEcE1Iakk/edit?usp=sharing > > -- > John > > > ------------------------------------------------------------------------------ > Want excitement? > Manually upgrade your production database. > When you want reliability, choose Perforce > Perforce version control. Predictably reliable. > > http://pubads.g.doubleclick.net/gampad/clk?id=157508191&iu=/4140/ostg.clktrk > _______________________________________________ > Libmesh-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/libmesh-users > ------------------------------------------------------------------------------ Want excitement? Manually upgrade your production database. When you want reliability, choose Perforce Perforce version control. Predictably reliable. http://pubads.g.doubleclick.net/gampad/clk?id=157508191&iu=/4140/ostg.clktrk _______________________________________________ Libmesh-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/libmesh-users
