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Subject: Re: [OMPI users] Number of processes and spawn
From: Federico Golfrè Andreasi (federico.golfre_at_[hidden])
Date: 2011-03-04 06:43:48


Hi Ralph,

I'm getting stuck with spawning stuff,

I've downloaded the snapshot from the trunk of 1st of March (
openmpi-1.7a1r24472.tar.bz2),
I'm testing using a small program that does the following:
 - master program starts and each rank prints his hostsname
 - master program spawn a slave program with the same size
 - each rank of the slave (spawned) program prints his hostname
 - end
Not always he is able to complete the progam run, two different behaviour:
 1. not all the slave print their hostname and the program ends suddenly
 2. both program ends correctly but orted demon is still alive and I need to
press crtl-c to exit

I've tryed to recompile my test program with a previous snapshot
(openmpi-1.7a1r22794.tar.bz2)
where I have only the compiled version of OpenMPI (in another machine).
It gives me an error before starting (I've attacehd)
Surfing on the FAQ I found some tip and I verified to compile the program
with the correct OpenMPI version,
that the LD_LIBRARY_PATH is consistent.
So I would like to re-compile the openmpi-1.7a1r22794.tar.bz2 but where can
I found it ?

Thank you,
Federico

Il giorno 23 febbraio 2011 03:43, Ralph Castain <rhc.openmpi_at_[hidden]> ha
scritto:

> Apparently not. I will investigate when I return from vacation next week.
>
>
> Sent from my iPad
>
> On Feb 22, 2011, at 12:42 AM, Federico Golfrè Andreasi <
> federico.golfre_at_[hidden]> wrote:
>
> Hi Ralf,
>
> I've tested spawning with the OpenMPI 1.5 release but that fix is not
> there.
> Are you sure you've added it ?
>
> Thank you,
> Federico
>
>
>
> 2010/10/19 Ralph Castain < <rhc_at_[hidden]>rhc_at_[hidden]>
>
>> The fix should be there - just didn't get mentioned.
>>
>> Let me know if it isn't and I'll ensure it is in the next one...but I'd be
>> very surprised if it isn't already in there.
>>
>>
>> On Oct 19, 2010, at 3:03 AM, Federico Golfrè Andreasi wrote:
>>
>> Hi Ralf !
>>
>> I saw that the new realease 1.5 is out.
>> I didn't found this fix in the "list of changes", is it present but not
>> mentioned since is a minor fix ?
>>
>> Thank you,
>> Federico
>>
>>
>>
>> 2010/4/1 Ralph Castain < <rhc_at_[hidden]>rhc_at_[hidden]>
>>
>>> Hi there!
>>>
>>> It will be in the 1.5.0 release, but not 1.4.2 (couldn't backport the
>>> fix). I understand that will come out sometime soon, but no firm date has
>>> been set.
>>>
>>>
>>> On Apr 1, 2010, at 4:05 AM, Federico Golfrè Andreasi wrote:
>>>
>>> Hi Ralph,
>>>
>>>
>>> I've downloaded and tested the openmpi-1.7a1r22817 snapshot,
>>> and it works fine for (multiple) spawning more than 128 processes.
>>>
>>> That fix will be included in the next release of OpenMPI, right ?
>>> Do you when it will be released ? Or where I can find that info ?
>>>
>>> Thank you,
>>> Federico
>>>
>>>
>>>
>>> 2010/3/1 Ralph Castain < <rhc_at_[hidden]>rhc_at_[hidden]>
>>>
>>>> <http://www.open-mpi.org/nightly/trunk/>
>>>> http://www.open-mpi.org/nightly/trunk/
>>>>
>>>> I'm not sure this patch will solve your problem, but it is worth a try.
>>>>
>>>>
>>>>
>>>>
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