Hi,
I updated openmpi from version 1.5.4 to 1.5.5.
Then, an execution speed of my application becomes quite slower than
before,
due to wrong core bindings. As far as I checked, it seems that
openmpi-1.5.4
gives correct core bindings for my magnycore based machine.
1) my script is as follows:
exp
Can you send the output of lstopo -p ? (you'll have to install hwloc)
Brice
tmish...@jcity.maeda.co.jp a écrit :
Hi,
I updated openmpi from version 1.5.4 to 1.5.5.
Then, an execution speed of my application becomes quite slower than
before,
due to wrong core bindings. As far as I checked, it s
Hi, Brice.
I installed the latest hwloc-1.4.1.
Here is the output of lstopo -p.
[root@node03 bin]# ./lstopo -p
Machine (126GB)
Socket P#0 (32GB)
NUMANode P#0 (16GB) + L3 (5118KB)
L2 (512KB) + L1 (64KB) + Core P#0 + PU P#0
L2 (512KB) + L1 (64KB) + Core P#1 + PU P#4
L2 (512K
Le 11/04/2012 09:06, tmish...@jcity.maeda.co.jp a écrit :
> Hi, Brice.
>
> I installed the latest hwloc-1.4.1.
> Here is the output of lstopo -p.
>
> [root@node03 bin]# ./lstopo -p
> Machine (126GB)
> Socket P#0 (32GB)
> NUMANode P#0 (16GB) + L3 (5118KB)
> L2 (512KB) + L1 (64KB) + Core
A quick look at the code seems to confirm my feeling. get/set_module()
callbacks manipulate arrays of logical indexes, and they do not convert
them back to physical indexes before binding.
Here's a quick patch that may help. Only compile tested...
Brice
Le 11/04/2012 09:49, Brice Goglin a écri
Here's a better patch. Still only compile tested :)
Brice
Le 11/04/2012 10:36, Brice Goglin a écrit :
> A quick look at the code seems to confirm my feeling. get/set_module()
> callbacks manipulate arrays of logical indexes, and they do not convert
> them back to physical indexes before binding.
Interesting. Jeff and I had discussed that very problem not that long ago, and
I could swear he fixed it - but I don't see the CMR for that code. He's on
vacation this week, so I'll wait for his return to look at it.
Thanks!
Ralph
On Apr 11, 2012, at 2:36 AM, Brice Goglin wrote:
> A quick look
Ouch - finally figured out what happened. Jeff and I did indeed address this
problem a few weeks ago. There were some changes required in a couple of places
to make it all work, so we did the work in a Mercurial branch Jeff set up.
Unfortunately, I think he got distracted by the MPI Forum shortl
Am 11.04.2012 um 04:26 schrieb Ralph Castain:
> Hi Reuti
>
> Can you replicate this problem on your machine? Can you try it with 1.5?
No. It's also working fine in 1.5.5 in some tests. I even forced an uneven
distribution by limiting the slots setting for some machines in the queue
configurati
On Apr 11, 2012, at 6:20 AM, Reuti wrote:
> Am 11.04.2012 um 04:26 schrieb Ralph Castain:
>
>> Hi Reuti
>>
>> Can you replicate this problem on your machine? Can you try it with 1.5?
>
> No. It's also working fine in 1.5.5 in some tests. I even forced an uneven
> distribution by limiting the
The 1.5 series does not support process migration, so there is no
ompi-migrate option there. This was only contributed to the trunk (1.7
series). However, changes to the runtime environment over the past few
months have broken this functionality. It is currently unclear when
this will be repaired.
Dear openMPI users,
I think this should be an easy question to anyone with more experience
than an openMPI-hello-world-program...
I wrote some openMPI code, where the master sends a length and then a
buffer with that length as 2 subsequent MPI messages.
The slave is receiving these messages and a
Hello !
I check my OS(ubuntu 11) . it not install prelink . Are there other reasons?
(ompi-restart)
thanks .
寄件者: Josh Hursey
收件者: Open MPI Users
寄件日期: 2012/4/11 (週三) 8:36 PM
主旨: Re: [OMPI users] ompi-restart failed && ompi-migrate
The 1.5 series does
Hi, Brice.
Thank you for sending me a patch. Now, I quickly tested your try2.patch.
Then, regarding execution speed it works well.
But, in terms of core binding reports, it's still different from
openmpi-1.5.4.
I'm not sure which is better for a standard user like me, reporting logical
indexes or
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