Hi Joshua Can you your int counter "i" get so large?
> for(i=0; i<=1000000000000; i++) I may be mistaken, but 1,000,000,000,000 = 10**12 > 2**31=2,147,483,647=maximum int. Unless they are 64-bit long[s]. Just a thought. Gus Correa On Mar 13, 2012, at 4:54 PM, Joshua Baker-LePain wrote: > On Tue, 13 Mar 2012 at 7:53pm, Gutierrez, Samuel K wrote > >> The failure signature isn't exactly what we were seeing here at LANL, but >> there were misplaced memory barriers in Open MPI 1.4.3. Ticket 2619 talks >> about this issue (https://svn.open-mpi.org/trac/ompi/ticket/2619). This >> doesn't explain, however, the failures that you are experiencing within Open >> MPI 1.5.4. Can you give 1.4.4 a whirl and see if this fixes the issue? > > Would it be best to use 1.4.4 specifically, or simply the most recent 1.4.x > (which appears to be 1.4.5 at this point)? > >> Any more information surrounding your failures in 1.5.4 are greatly >> appreciated. > > I'm happy to provide, but what exactly are you looking for? The test code > I'm running is *very* simple: > > #include <stdio.h> > #include <mpi.h> > > main(int argc, char **argv) > { > int node; > > int i, j; > float f; > > MPI_Init(&argc,&argv); > MPI_Comm_rank(MPI_COMM_WORLD, &node); > > printf("Hello World from Node %d.\n", node); > > for(i=0; i<=1000000000000; i++) > f=i*2.718281828*i+i+i*3.141592654; > > MPI_Finalize(); > } > > And my environment is a pretty standard CentOS-6.2 install. > > -- > Joshua Baker-LePain > QB3 Shared Cluster Sysadmin > UCSF > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users
