By the way, there is no way to time-out a call to MPI_Init(), or is there? -------------------------------- Jacob M. Katz | jacob.k...@intel.com | Work: +972-4-865-5726 | iNet: (8)-465-5726
-----Original Message----- From: users-boun...@open-mpi.org [mailto:users-boun...@open-mpi.org] On Behalf Of Katz, Jacob Sent: Sunday, December 06, 2009 17:42 To: Open MPI Users Subject: Re: [OMPI users] Mimicking timeout for MPI_Wait Thanks, Douglas. I found your code in the archive. -------------------------------- Jacob M. Katz | jacob.k...@intel.com | Work: +972-4-865-5726 | iNet: (8)-465-5726 -----Original Message----- From: users-boun...@open-mpi.org [mailto:users-boun...@open-mpi.org] On Behalf Of Douglas Guptill Sent: Sunday, December 06, 2009 15:53 To: us...@open-mpi.org Subject: Re: [OMPI users] Mimicking timeout for MPI_Wait On Sun, Dec 06, 2009 at 02:29:01PM +0200, Katz, Jacob wrote: > Thanks. > Yes, I meant in the question that I was looking for something creative, both > fast responding and not using 100% CPU all the time. > I guess I’m not the first one to face this question. Have anyone done > anything “better” than the simple solution? My MPI application is a two-process thing, in which data is thrown back and forth. For the most part, one process is calculating, and the other is waiting. I got tired of seeing both cpus at 100% load, and based on suggestions from Jeff Squyres and Eugene Loh, wrote MPI_Recv.c and MPI_Send.c. I load these with my application, and bingo! Only one cpu busy at any given time. They use a graduated sleep; the first sleep is short, the second is twice as long, and so on, up to a maximum sleep time. I sent the code along with my last message on the subject (December 2008, or later) so it should be in the archives. Failing that, I could post it again, if anyone wants it. Douglas. _______________________________________________ users mailing list us...@open-mpi.org http://www.open-mpi.org/mailman/listinfo.cgi/users --------------------------------------------------------------------- Intel Israel (74) Limited This e-mail and any attachments may contain confidential material for the sole use of the intended recipient(s). Any review or distribution by others is strictly prohibited. If you are not the intended recipient, please contact the sender and delete all copies. _______________________________________________ users mailing list us...@open-mpi.org http://www.open-mpi.org/mailman/listinfo.cgi/users --------------------------------------------------------------------- Intel Israel (74) Limited This e-mail and any attachments may contain confidential material for the sole use of the intended recipient(s). Any review or distribution by others is strictly prohibited. If you are not the intended recipient, please contact the sender and delete all copies.
