great! Thanks, Erin
Erin M. Hodgess, PhD Associate Professor Department of Computer and Mathematical Sciences University of Houston - Downtown mailto: hodge...@uhd.edu -----Original Message----- From: users-boun...@open-mpi.org on behalf of Brock Palen Sent: Sun 11/9/2008 11:21 PM To: Open MPI Users Subject: Re: [OMPI users] dual cores Run 'top' For long running applications you should see 4 processes each at 50% (4*50=200% two cpus). You are ok, your hello_c did what it should, each of thoese 'hello's could have came from any of the two cpus. Also if your only running on your local machine, you don't need a hostfile, and -byslot is meaningless in this case, mpirun -np 4 ./hello_c Would work just fine. Brock Palen www.umich.edu/~brockp Center for Advanced Computing bro...@umich.edu (734)936-1985 On Nov 10, 2008, at 12:05 AM, Hodgess, Erin wrote: > Dear Open MPI gurus: > > I have just installed Open MPI this evening. > > I have a dual core laptop and I would like to have both cores running. > > Here is the following my-hosts file: > localhost slots=2 > > and here is the command and output: > mpirun --hostfile my-hosts -np 4 --byslot hello_c |sort > Hello, world, I am 0 of 4 > Hello, world, I am 1 of 4 > Hello, world, I am 2 of 4 > Hello, world, I am 3 of 4 > hodgesse@erinstoy:~/Desktop/openmpi-1.2.8/examples> > > > How do I know if both cores are running, please? > > thanks, > Erin > > > Erin M. Hodgess, PhD > Associate Professor > Department of Computer and Mathematical Sciences > University of Houston - Downtown > mailto: hodge...@uhd.edu > > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users _______________________________________________ users mailing list us...@open-mpi.org http://www.open-mpi.org/mailman/listinfo.cgi/users
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