Hi,
In addition to Ralph's explanation, you can change the policy of
this behavior using MCA param orte_set_default_slots.
For example, by setting "none" you can disable the auto detection
of slots count, which means it's compatible with openmpi-1.6.X.
Regards,
Tetsuya Mishima
There is no problem with using numerical host names - we don’t care so long as
your system can resolve them. The difference you are seeing relates to a change
in behavior created during the 1.7 series. If you don’t specify the #slots on a
host, then we automatically set it to the number of detec
Am 04.09.2012 um 01:38 schrieb Ralph Castain:
>>> W
>>> Well that seems strange! Can you run 1.6.1 with the following on the mpirun
>>> cmd line:
>>>
>>> -mca ras_gridengine_debug 1 -mca ras_gridengine_verbose 10 -mca
>>> ras_base_verbose 10
>
> I'll take a look at this and see what's going on
On Sep 3, 2012, at 3:50 PM, Reuti wrote:
> Am 04.09.2012 um 00:07 schrieb Ralph Castain:
>
>> I'm leaning towards fixing it - it came due to discussions on how to handle
>> hostfile when there is an allocation. For now, though, that should work.
>
> Oh, did I miss this on the list? If there i
Am 04.09.2012 um 00:07 schrieb Ralph Castain:
> I'm leaning towards fixing it - it came due to discussions on how to handle
> hostfile when there is an allocation. For now, though, that should work.
Oh, did I miss this on the list? If there is a hostfile given as argument, it
should override th
On Sep 3, 2012, at 2:40 PM, Reuti wrote:
> Hi Ralph,
>
> Am 03.09.2012 um 23:34 schrieb Ralph Castain:
>
>>
>> On Sep 3, 2012, at 2:12 PM, Reuti wrote:
>>
>>> Hi all,
>>>
>>> I just compiled Open MPI 1.6.1 and before digging any deeper: does anyone
>>> else notice, that the command:
>>>
Hi Ralph,
Am 03.09.2012 um 23:34 schrieb Ralph Castain:
>
> On Sep 3, 2012, at 2:12 PM, Reuti wrote:
>
>> Hi all,
>>
>> I just compiled Open MPI 1.6.1 and before digging any deeper: does anyone
>> else notice, that the command:
>>
>> $ mpiexec -n 4 -machinefile mymachines ./mpihello
>>
>>
On Sep 3, 2012, at 2:12 PM, Reuti wrote:
> Hi all,
>
> I just compiled Open MPI 1.6.1 and before digging any deeper: does anyone
> else notice, that the command:
>
> $ mpiexec -n 4 -machinefile mymachines ./mpihello
>
> will ignore the argument "-machinefile mymachines" and use the file
> "
Also see:
http://www.open-mpi.org/faq/?category=tuning#paffinity-defs
http://www.open-mpi.org/faq/?category=tuning#using-paffinity
and
http://www.open-mpi.org/projects/plpa/
On Oct 31, 2007, at 11:55 AM, ky...@neuralbs.com wrote:
It will indeed but you can have better control over the process
It will indeed but you can have better control over the processor
assignment by using processor affinity (also get better performance) as
sen here:
http://www.nic.uoregon.edu/tau-wiki/Guide:Opteron_NUMA_Analysis
http://www-128.ibm.com/developerworks/linux/library/l-affinity.html
Eric
> I think if
I think if you boot the mpi on the host machine, and than run your
program with 8 thread (mpirun -np 8 ) , the operating
system will automatically distribute it to the cores.
Jeff Pummill wrote:
I am doing some testing on a variety of 8-core nodes in which I just
want to execute a couple of e
So, it appears that for a machine of this type (dual quad core cpu's),
this approach would be correct for my tests...
[jpummill@n1 bin]$ more my-hosts
n1 slots=8 max_slots=8
and subsequently, launch two jobs in this configuration...
/home/jpummill/openmpi-1.2.2/bin/mpirun --hostfile my-hosts -n
The cleaner way to define such an environment is by using the max-
slots and/or slots options in the hostfile. Here is a FAQ entry about
how Open MPI deal with these options (http://www.open-mpi.org/faq/?
category=running#mpirun-scheduling).
george.
On Oct 26, 2007, at 10:52 AM, Jeff Pumm
Jeff,
A simple suggestion: put eight (or whatever the number of cores is)
identical entries for each node, such as
compute-0-0
compute-0-0
compute-0-0
compute-0-0
compute-0-0
compute-0-0
compute-0-0
compute-0-0
compute-0-1
compute-0-1
compute-0-1
compute-0-1
...
It seems to work for my
Geoff,
'cpu', 'slots', and 'count' all do exactly the same thing.
Tim
On Thursday 22 March 2007 03:03 pm, Geoff Galitz wrote:
> Does the hostfile understand the syntax:
>
> mybox cpu=4
>
> I have some legacy code and scripts that I'd like to move without
> modifying if possible. I understand th
On Jun 21, 2006, at 11:23 AM, snoze pa wrote:
when using my nodelist I am getting following errors.. ny solution
to this problem
[0,0,0] ORTE_ERROR_LOG: Not implemented in file rmgr_urm.c at line 177
[0,0,0] ORTE_ERROR_LOG: Not implemented in file rmgr_urm.c at line 365
mpirun: spawn failed w
when using my nodelist I am getting following errors.. ny solution to this
problem
[0,0,0] ORTE_ERROR_LOG: Not implemented in file rmgr_urm.c at line 177
[0,0,0] ORTE_ERROR_LOG: Not implemented in file rmgr_urm.c at line 365
mpirun: spawn failed with errno=-7
On 6/21/06, snoze pa wrote:
Hell
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