On Monday 08 December 2008 02:44:42 pm George Bosilca wrote:
> Barry,
>
> If you set the eager size large enough, the isend will not return
> until the data is pushed into the network layer.
That's exactly what I want it to do -- good. I've set the eagerness to 2MB,
but for messages 64k and up,
Original message
>Date: Mon, 8 Dec 2008 11:47:19 -0500
>From: George Bosilca
>Subject: Re: [OMPI users] How to force eager behavior during Isend?
>To: Open MPI Users
>
>Barry,
>
>These values are used deep inside the Open MPI library, in order to
>define how we handle the messag
would accomplish
this, but that's didn't work on this system.
What's the correct way of doing this?
Thanks much,
Barry Rountree
University of Georgia
OpenMPI 2.8 Linux+gcc, self+tcp.
Relevant bit of the hostfile looks like:
opt00 slots=1 max_slots=1
opt01 slo
would accomplish
this, but that's didn't work on this system.
What's the correct way of doing this?
Thanks much,
Barry Rountree
University of Georgia
OpenMPI 2.8 Linux+gcc, self+tcp.
Relevant bit of the hostfile looks like:
opt00 slots=1 max_slots=1
opt01 slo
On Wed, May 07, 2008 at 03:47:24PM -0400, Sang Chul Choi wrote:
> Hi,
>
> I tried to run a hello world example of mpi code. It just hangs at
> MPI_Init. My machine is installed with Ubuntu linux and I install some
> package of open mpi. Compiling was okay, but running the code hangs at
> MPI_Init.
On Wed, May 07, 2008 at 01:51:03PM -0400, Alberto Giannetti wrote:
>
> On May 7, 2008, at 1:32 PM, Barry Rountree wrote:
>
> > On Wed, May 07, 2008 at 12:33:59PM -0400, Alberto Giannetti wrote:
> >> I need to log application-level messages on disk to trace my program
&
On Wed, May 07, 2008 at 12:33:59PM -0400, Alberto Giannetti wrote:
> I need to log application-level messages on disk to trace my program
> activity. For better performances, one solution is to dedicate one
> processor to the actual I/O logging, while the other working
> processors would trac
On Thu, Apr 24, 2008 at 11:17:30AM -0400, George Bosilca wrote:
> Well, blocking or not blocking this is the question !!! Unfortunately, it's
> more complex than this thread seems to indicate. It's not that we didn't
> want to implement it in Open MPI, it's that at one point we had to make a
> c
milliseconds, and then use some other method that
> sleeps not for a fixed time, but until new messages arrive.
Well, it sounds like you can get to this before I can. Post your patch
here and I'll test it on the NAS suite, UMT2K, Paradis, and a few
synthetic benchmarks I've written.
or energy savings. Are you
volunteering to test a patch? (I've got four other papers I need to
get finished up, so it'll be a few weeks before I start coding.)
Barry Rountree
Ph.D. Candidate, Computer Science
University of Georgia
>
>
>
>
> Jeff Squyres schrieb:
>
On Thu, Jan 24, 2008 at 10:09:51PM -0500, Barry Rountree wrote:
> On Thu, Jan 24, 2008 at 04:03:49PM -0500, Tim Mattox wrote:
> > Hello Barry,
> > I am guessing you are trying to use a threaded build of Open MPI...
> >
> > Unfortunately, the threading support in Ope
ave threading support actually working.
Well, I'm happy the problem is obvious and the workaround is easy. I'll
compile that version tonight and try it out when I get some time on the
cluster tomorrow.
Thanks for the help!
Barry
>
> On Jan 24, 2008 3:25 AM, Barry Rountree wrote
On Thu, Jan 24, 2008 at 03:01:40AM -0500, Barry Rountree wrote:
> On Fri, Jan 18, 2008 at 08:33:10PM -0500, Jeff Squyres wrote:
> > Barry --
> >
> > Could you check what apps are still running when it hangs? I.e., I
> > assume that all the uptime's are dead;
d at the end of time (look for
> function names like iof_flush or similar). We thought we had fixed
> all of those on the 1.2 branch, but perhaps there's some other weird
> race condition happening that doesn't happen on our test machines...
>
>
>
> On Jan 1
xed
> all of those on the 1.2 branch, but perhaps there's some other weird
> race condition happening that doesn't happen on our test machines...
I'm happy to help. I've got a paper submission deadline on Tuesday, so
it might not be until midweek.
Thanks for the rep
d ompi directory.
>
> Any assistance on this matter would be appreciated,
>
> Mark E. Kosmowski
I'd posted a message earlier about intermittent hangs -- perhaps it's
the same issue. If you run a hundred instances or so of "
On Sun, Jan 13, 2008 at 09:54:47AM -0500, Barry Rountree wrote:
> Hello,
>
> The following command
>
> mpirun -np 2 -hostfile ~/hostfile uptime
>
> will occasionally hang after completing. The expected output appears on
> the screen, but mpirun needs a SIGKILL
9.1.045) and gcc 4.1.0 20060304 (aka Red Hat 4.1.0-3). I
have also tried earlier versions of OpenMPI and found the same bug
(1.1.2 and 1.2.2).
Using -verbose didn't provide any additional output. I'm happy to help
tracking down whatever is causing this.
Many thanks,
Barry Rou
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