[mpich-discuss] How do I use the HYDRA_BINDING environmental variable?

[Kenneth Raffenetti]

John,

Just pushed a patch to mpich.git to fix this particular issue. 
http://git.mpich.org/mpich.git/commit/a131e534d26ea79ba028435b2a162e14b5c7764f

Ken

On 05/24/2016 09:04 AM, Kenneth Raffenetti wrote:
> Hi John,
>
> This looks like a bug. Thanks for reporting. I'll put together a fix
> shortly.
>
> Ken
>
> On 05/24/2016 08:05 AM, Low, John J. wrote:
>> Mpich discussion group,
>>
>> I would like to use hydra environment variables to bind threads to
>> cores.  I am using hydra 3.2 with mvapich2 version 2.2b_psm built with
>> intel 15.0.
>>
>> I have a simple program to print out the cpu affinity for each process
>> which I have used to test process binding.  I have included the output
>> of this program below.
>>
>> [jlow at blogin2 hybrid_hello]$ HYDRA_BINDING=socket mpirun -np 4 a.out
>> Hello from node blogin2, core 0-15; AKA rank 3, thread 0
>> Hello from node blogin2, core 0-15; AKA rank 0, thread 0
>> Hello from node blogin2, core 0-15; AKA rank 2, thread 0
>> Hello from node blogin2, core 0-15; AKA rank 1, thread 0
>> [jlow at blogin2 hybrid_hello]$ mpirun -bind-to core:2 -np 4 a.out
>> Hello from node blogin2, core 4,5; AKA rank 2, thread 0
>> Hello from node blogin2, core 6,7; AKA rank 3, thread 0
>> Hello from node blogin2, core 0,1; AKA rank 0, thread 0
>> Hello from node blogin2, core 2,3; AKA rank 1, thread 0
>> [jlow at blogin2 hybrid_hello]$ mpirun -bind-to socket -np 4 a.out
>> Hello from node blogin2, core 8-15; AKA rank 3, thread 0
>> Hello from node blogin2, core 0-7; AKA rank 0, thread 0
>> Hello from node blogin2, core 0-7; AKA rank 2, thread 0
>> Hello from node blogin2, core 8-15; AKA rank 1, thread 0
>> [jlow at blogin2 hybrid_hello]$ HYDRA_BINDING=socket mpirun -np 4 a.out
>> Hello from node blogin2, core 0-15; AKA rank 3, thread 0
>> Hello from node blogin2, core 0-15; AKA rank 1, thread 0
>> Hello from node blogin2, core 0-15; AKA rank 2, thread 0
>> Hello from node blogin2, core 0-15; AKA rank 0, thread 0
>>
>> It appears that hydra is ignoring my environmental variables.  How can I
>> use environmental variables to bind processes to cores with hydra?
>>
>> Thanks,
>>
>> John J. Low
>> Principal Computational Science Specialist
>> Computing, Environment and Life Sciences
>> Building 240, 2143
>> 9700 South Cass Avenue
>> Argonne National Laboratory
>> Argonne, IL 60439.
>> 630-252-0045
>> www.linkedin.com/pub/john-low/15/8b0/5aa/
>>
>>
>>
>> _______________________________________________
>> discuss mailing list     discuss at mpich.org
>> To manage subscription options or unsubscribe:
>> https://lists.mpich.org/mailman/listinfo/discuss
>>
> _______________________________________________
> discuss mailing list     discuss at mpich.org
> To manage subscription options or unsubscribe:
> https://lists.mpich.org/mailman/listinfo/discuss
_______________________________________________
discuss mailing list     discuss at mpich.org
To manage subscription options or unsubscribe:
https://lists.mpich.org/mailman/listinfo/discuss