I'm afraid these are both known problems in the 1.6.2 release. I believe we
fixed npersocket in 1.6.3, though you might check to be sure. On the
large-scale issue, cpus-per-rank well might fail under those conditions. The
algorithm in the 1.6 series hasn't seen much use, especially at scale.
In
Using openmpi 1.6.2 with intel 13.0 though the problem not specific to the
compiler.
Using two 12 core 2 socket nodes,
mpirun -np 4 -npersocket 2 uptime
--
Your job has requested a conflicting number of processes for the
a
Hooray!! Great to hear - I was running out of ideas :-)
On Dec 19, 2012, at 2:01 PM, Daniel Davidson wrote:
> I figured this out.
>
> ssh was working, but scp was not due to an mtu mismatch between the systems.
> Adding MTU=1500 to my /etc/sysconfig/network-scripts/ifcfg-eth2 fixed the
> pro
I figured this out.
ssh was working, but scp was not due to an mtu mismatch between the
systems. Adding MTU=1500 to my
/etc/sysconfig/network-scripts/ifcfg-eth2 fixed the problem.
Dan
On 12/17/2012 04:12 PM, Daniel Davidson wrote:
Yes, it does.
Dan
[root@compute-2-1 ~]# ssh compute-2-0
W
On 12/19/2012 12:28 PM, marco atzeri wrote:
working on openmpi-1.7rc5.
It needs some cleaning and after I need to test.
built and passed test
http://www.open-mpi.org/community/lists/devel/2012/12/11855.php
Regards
Marco
On 19/12/12 11:08, Paul Kapinos wrote:
Did you *really* wanna to dig into code just in order to switch a
default communication algorithm?
No, I didn't want to, but with a huge change in performance, I'm forced
to do something! And having looked at the different algorithms, I think
there's a p
Jeff, others:
I fixed the problem we were experiencing by adding a barrier.
The bug occurred between a piece of code that uses (many, over a loop) SEND
(from the leader)
and RECV (in the worker processes) to ship data to the
processing nodes from the head / leader, and I think what might have be
Le mercredi 19 décembre 2012 à 12:12 +0500, Syed Ahsan Ali a écrit :
> Dear John
>
> I found this output of ibstatus on some nodes (most probably the
> problem causing)
> [root@compute-01-08 ~]# ibstatus
>
> Fatal error: device '*': sys files not found
> (/sys/class/infiniband/*/ports)
>
> Do
Seems like driver was not started. I would suggest to run lspci and check if
the HCA is visible on HW level.
Pavel (Pasha) Shamis
---
Computer Science Research Group
Computer Science and Math Division
Oak Ridge National Laboratory
On Dec 19, 2012, at 2:12 AM, Syed Ahsan Ali wrote:
Dear Joh
Hi
I shortend this email so that you get earlier to my comments.
> > In my opinion Datatype.Vector must set the size of the
> > base datatype as extent of the vector and not the true extent, because
> > MPI-Java doesn't provide a function to resize a datatype.
>
> No, I think Datatype.Vector is
On 12/19/2012 11:04 AM, Siegmar Gross wrote:
Hi
On 12/18/2012 6:55 PM, Jeff Squyres wrote:
...but only of v1.6.x.
okay, adding development version on Christmas wishlist
;-)
Can you build the package with thread and Java support?
--enable-mpi-java \
--enable-opal-multi-threads \
-
Did you *really* wanna to dig into code just in order to switch a default
communication algorithm?
Note there are several ways to set the parameters; --mca on command line is just
one of them (suitable for quick online tests).
http://www.open-mpi.org/faq/?category=tuning#setting-mca-params
W
Having run some more benchmarks, the new default is *really* bad for our
application (2-10x slower), so I've been looking at the source to try
and figure out why.
It seems that the biggest difference will occur when the all_to_all is
actually sparse (e.g. our application); if most N-M process
Hi
> On 12/18/2012 6:55 PM, Jeff Squyres wrote:
> > ...but only of v1.6.x.
>
> okay, adding development version on Christmas wishlist
> ;-)
Can you build the package with thread and Java support?
--enable-mpi-java \
--enable-opal-multi-threads \
--enable-mpi-thread-multiple \
--with-thr
Dear John
I found this output of ibstatus on some nodes (most probably the problem
causing)
[root@compute-01-08 ~]# ibstatus
Fatal error: device '*': sys files not found
(/sys/class/infiniband/*/ports)
Does this show any hardware or software issue?
Thanks
On Wed, Nov 28, 2012 at 3:17 PM, Jo
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