There's also a great project at SourceForge called "htop" that is a
"better" version of top. It includes the ability to query for and set
processor affinity for abitrary processes, colorized output, tree-
based output (showing process hierarchies), etc. It's pretty nice
(IMHO):
http://htop.sf.net/
On Nov 10, 2008, at 3:03 AM, Lenny Verkhovsky wrote:
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
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Cisco Systems
