On Tue, 2009-12-08 at 10:14 +, Number Cruncher wrote:
> Whilst MPI has traditionally been run on dedicated hardware, the rise of
> cheap multicore CPUs makes it very attractive for ISVs such as ourselves
> (http://www.cambridgeflowsolutions.com/) to build a *single* executable
> that can be
Whilst MPI has traditionally been run on dedicated hardware, the rise of
cheap multicore CPUs makes it very attractive for ISVs such as ourselves
(http://www.cambridgeflowsolutions.com/) to build a *single* executable
that can be run in batch mode on a dedicated cluster *or* interactively
on a
There are many papers published at this subject. Google scholar with a search
for "system noise" will give you a starting point.
george.
On Dec 7, 2009, at 10:13 , Douglas Guptill wrote:
>> In most MPI applications if even one task is sharing its CPU with
>> other processes, like users doing
On Mon, Dec 07, 2009 at 08:21:46AM -0500, Richard Treumann wrote:
> The need for a "better" timeout depends on what else there is for the CPU
> to do.
>
> If you get creative and shift from {99% MPI_WAIT , 1% OS_idle_process} to
> {1% MPI_Wait, 99% OS_idle_process} at a cost of only a few extra
>
-
> 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, Decembe
Douglas Guptill wrote:
On Sun, Dec 06, 2009 at 02:29:01PM +0200, Katz, Jacob wrote:
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 don
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
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
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”
mp; Technology Group
Dept X2ZA / MS P963 -- 2455 South Road -- Poughkeepsie, NY 12601
Tele (845) 433-7846 Fax (845) 433-8363
users-boun...@open-mpi.org wrote on 12/04/2009 01:38:05 PM:
> [image removed]
>
> Re: [OMPI users] Mimicking timeout for MPI_Wait
>
> Jeff Squyres
>
> to
Jeff Squyres wrote:
On Dec 3, 2009, at 3:31 AM, Katz, Jacob wrote:
I wonder if there is a BKM (efficient and portable) to mimic a timeout with a
call to MPI_Wait, i.e. to interrupt it once a given time period has passed if
it hasn’t returned by then yet.
Pardon my ignorance, but what does B
oup
Dept X2ZA / MS P963 -- 2455 South Road -- Poughkeepsie, NY 12601
Tele (845) 433-7846 Fax (845) 433-8363
users-boun...@open-mpi.org wrote on 12/04/2009 01:38:05 PM:
> [image removed]
>
> Re: [OMPI users] Mimicking timeout for MPI_Wait
>
> Jeff Squyres
>
> to:
>
&g
On Dec 3, 2009, at 3:31 AM, Katz, Jacob wrote:
> I wonder if there is a BKM (efficient and portable) to mimic a timeout with a
> call to MPI_Wait, i.e. to interrupt it once a given time period has passed if
> it hasn’t returned by then yet.
Pardon my ignorance, but what does BKM stand for?
Ope
Hi,
I wonder if there is a BKM (efficient and portable) to mimic a timeout with a
call to MPI_Wait, i.e. to interrupt it once a given time period has passed if
it hasn't returned by then yet.
I'll appreciate if anyone may send a pointer/idea.
Thanks.
Jacob M. Kat
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