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Subject: Re: [OMPI users] Number of processes and spawn
From: Federico Golfrè Andreasi (federico.golfre_at_[hidden])
Date: 2010-02-26 12:23:01


I'm doing some tests and it seems that is not able to do a spawn multiple
with more than 128 nodes.

It just hold, with no error message.

What do you think? What can I try to understand the problem.

Thanks,

Federico

2010/2/26 Ralph Castain <rhc_at_[hidden]>

> No known limitations of which we are aware...the variables are all set to
> int32_t, so INT32_MAX would be the only limit I can imagine. In which case,
> you'll run out of memory long before you hit it.
>
>
> 2010/2/26 Federico Golfrè Andreasi <federico.golfre_at_[hidden]>
>
>> HI !
>>
>> have you ever did some analysis to understand if there is a limitation in
>> the number of nodes usable with OpenMPI-v1.4 ?
>> Using also the functions MPI_Comm_spawn o MPI_Comm_spawn_multiple.
>>
>> Thanks,
>> Federico
>>
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