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Subject: Re: [OMPI users] Problem with MPI_Comm_spawn_multiple & MPI_Info_fre
From: Ralph Castain (rhc_at_[hidden])
Date: 2009-03-11 21:39:25


Could you perhaps send us the arguments you are giving to
MPI_Comm_spawn_multiple? I think you definitely have a problem with
the way you created the MPI_Info keys, and would like to see the code
that is setting up the args and making the call.

Thanks
Ralph

On Mar 11, 2009, at 7:33 PM, Tee Wen Kai wrote:

> Hi,
>
> I tried to run with open MPI 1.3 but encouter the following error
> message:
>
> LOCAL DAEMON SPAWN IS CURRENTLY UNSUPPORTED
>
> May I know what I should do with this error as the program used to
> be able to spawn the programs using MPI_Comm_spawn_multiple
> correctly without this error with version 1.2.8.
>
> Thank you.
>
> Regards,
> Wenkai
>
> --- On Tue, 10/3/09, Lenny Verkhovsky <lenny.verkhovsky_at_[hidden]>
> wrote:
>
> From: Lenny Verkhovsky <lenny.verkhovsky_at_[hidden]>
> Subject: Re: [OMPI users] Problem with MPI_Comm_spawn_multiple &
> MPI_Info_fre
> To: "Open MPI Users" <users_at_[hidden]>
> Date: Tuesday, 10 March, 2009, 11:48 PM
>
> can you try Open MPI 1.3,
> Lenny.
>
> On 3/10/09, Tee Wen Kai <teewenkai_at_[hidden]> wrote:
> Hi,
>
> I am using version 1.2.8.
>
> Thank you.
>
> Regards,
> Wenkai
>
> --- On Mon, 9/3/09, Ralph Castain <rhc_at_[hidden]> wrote:
>
> From: Ralph Castain <rhc_at_[hidden]>
> Subject: Re: [OMPI users] Problem with MPI_Comm_spawn_multiple &
> MPI_Info_free
> To: "Open MPI Users" <users_at_[hidden]>
> Date: Monday, 9 March, 2009, 7:42 PM
>
> Could you tell us what version of Open MPI you are using? It would
> help us to provide you with advice.
>
> Thanks
> Ralph
>
> On Mar 9, 2009, at 2:18 AM, Tee Wen Kai wrote:
>
>> Hi,
>>
>> I have a program that allow user to enter their choice of
>> operation. For example, when the user enter '4', the program will
>> enter a function which will spawn some other programs stored in the
>> same directory. When the user enter '5', the program will enter
>> another function to request all spawned processes to exit.
>> Therefore, initially only one process which act as the controller
>> is spawned.
>>
>> My MPI_Info_create and MPI_Comm_spawn_multiple are called in a
>> function. Everything is working fine except when I tried to free
>> the MPI_Info in the function by calling MPI_Info_free, I have
>> segmentation fault error. The second problem is when i do the
>> spawning once and exit the controller program with MPI_Finalize,
>> the program exited normally. But when spawning is done more than
>> once and exit the controller program with MPI_Finalize, there is
>> segmentation fault. I also realize that when the spawed processes
>> exit, the 'orted' process is still running. Thus, when multiple
>> MPI_Comm_spawn_multiple are called, there will be multiple 'orted'
>> processes.
>>
>> Thank you and hope someone has a solution to my problem.
>>
>> Regards,
>> Wenkai
>>
>> New Email names for you!
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>> @rocketmail.
>> Hurry before someone else does!
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>
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