Committed in https://svn.open-mpi.org/trac/ompi/changeset/27785, and I filed
CMRs to get this fix in 1.6.4 and 1.7.
On Jan 10, 2013, at 9:23 AM, Phil Carns
wrote:
> Thanks Jeff. I tested the patch just now using Open MPI SVN trunk revision
> 27784. I was able to instrument an application w
Thanks Jeff. I tested the patch just now using Open MPI SVN trunk
revision 27784. I was able to instrument an application without any
trouble at all, and the patch looks great.
I definitely understand the memory registration cache pain. I've
dabbled in network abstractions for file systems
Greetings Phil. Good analysis.
You can thank OFED for this horribleness, BTW. :-) Since OFED hardware
requires memory registration, and since that registration is expensive, MPI
implementations cache registered memory to alleviate the re-registration costs
for repeated memory usage. But MPI
Hi,
I am a developer on the Darshan project
(http://www.mcs.anl.gov/darshan), which provides a set of lightweight
wrappers to characterize the I/O access patterns of MPI applications.
Darshan can operate on static or dynamic executables. As you might
expect, it uses the LD_PRELOAD mechanism
