[mpich-discuss] Problem with spawning child with same executable name

[Yauheni Zelenko]

Hi, Pavan!

Please try mpiexec -host "localhost:4" -n 1 /Spawn

Eugene.
________________________________________
From: Pavan Balaji [balaji at mcs.anl.gov]
Sent: Monday, February 07, 2011 9:45 PM
To: mpich-discuss at mcs.anl.gov
Cc: Yauheni Zelenko
Subject: Re: [mpich-discuss] Problem with spawning child with same executable name

I did. See the examples below.

  -- Pavan

On 02/07/2011 11:53 AM, Yauheni Zelenko wrote:
> Hi, Pavan!
>
> It's necessary to run "mpiexec -n 1 /Spawn" in configuration with several hosts (universe size>  1).
>
> Eugene
> ________________________________________
> From: Pavan Balaji [balaji at mcs.anl.gov]
> Sent: Saturday, February 05, 2011 2:03 AM
> To: mpich-discuss at mcs.anl.gov
> Cc: Yauheni Zelenko
> Subject: Re: [mpich-discuss] Problem with spawning child with same executable name
>
> I'm not able to reproduce this problem. This is what I did (attached is
> a slightly modified Spawn.c):
>
> % mpicc Spawn.c -o Spawn
>
> % mpicc SpawnChild.c -o SpawnChild
>
> % mpiexec ./Spawn ./Spawn
> Start process 0 of 1 on snowflake in universe of 1
>
> % mpiexec ./Spawn ./SpawnChild
> Start process 0 of 1 on snowflake in universe of 1
>
> % mpiexec -n 2 ./Spawn ./Spawn
> Start process 1 of 2 on snowflake in universe of 1
> Start process 0 of 2 on snowflake in universe of 1
>
> % mpiexec -n 2 ./Spawn ./SpawnChild
> Start process 0 of 2 on snowflake in universe of 1
> Start process 1 of 2 on snowflake in universe of 1
>
> % mpiexec -n 2 -hosts localhost,127.0.1.1 ./Spawn ./Spawn
> Start process 1 of 2 on snowflake in universe of 2
> Start process 0 of 2 on snowflake in universe of 2
>
> % mpiexec -n 2 -hosts localhost,127.0.1.1 ./Spawn ./SpawnChild
> Start process 1 of 2 on snowflake in universe of 2
> Start process 0 of 2 on snowflake in universe of 2
>
> What am I missing?
>
>    -- Pavan
>
> On 02/04/2011 03:46 PM, Yauheni Zelenko wrote:
>> Hi!
>>
>> I'm trying to use MPI_Comm_spawn to run child process and then use MPI_Intercomm_merge. This steps works when spawned children have different executable name then parent process but failed on MPI_Intercomm_merge step if executable names are same.
>>
>> Attached files could demonstrate a problem. Code is based on spawn_merge example.
>>
>> If difference in executable names is requirement, will be good idea to include in into  MPI_Comm_spawn documentation. Otherwise it's bug.
>>
>> Eugene.
>>
>>
>>
>> _______________________________________________
>> mpich-discuss mailing list
>> mpich-discuss at mcs.anl.gov
>> https://lists.mcs.anl.gov/mailman/listinfo/mpich-discuss
>
> --
> Pavan Balaji
> http://www.mcs.anl.gov/~balaji
> _______________________________________________
> mpich-discuss mailing list
> mpich-discuss at mcs.anl.gov
> https://lists.mcs.anl.gov/mailman/listinfo/mpich-discuss

--
Pavan Balaji
http://www.mcs.anl.gov/~balaji