you can also press "f" while"top" is running and choose option "j" this way you will see what CPU is chosen under column P Lenny.
On Mon, Nov 10, 2008 at 7:38 AM, Hodgess, Erin <hodge...@uhd.edu> wrote: > 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 > > > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users >
