[mpich-devel] HYDRA_TOPO_DEBUG=1 needs a line break

[Kenneth Raffenetti]

The newline is added after all the hwthreads are added to the string - 
line 469. You might be overrunning the max string length, as that is not 
well handled. Can you try doubling DBG_STR_LENGTH at the top of the file?

Ken

On 11/18/2015 09:09 AM, Jeff Hammond wrote:
> I followed the example on
> https://wiki.mpich.org/mpich/index.php/Using_the_Hydra_Process_Manager#Examples
> but got a huge mess rather than the output shown on the Wiki.
>
> Is the lack of line break here intentional?  I think it would be more
> useful if it did.
>
> jhammond at nid00218:~/> HYDRA_TOPO_DEBUG=1 mpiexec -rmk slurm -n 8
> -bind-to core true
>
> process 0 binding: 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
> 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0process 2
> binding: 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
> 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0process 3 binding: 0 0 0 1
> 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0
> 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0process 5 binding: 0 0 0 0 0 1 0 0 0 0 0 0
> 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0
> 0 0 0 0 0 0 0process 6 binding: 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0
> 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
> 0process 1 binding: 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
> 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0process 4
> binding: 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
> 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0process 7 binding: 0 0 0 0
> 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
> 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0jhammond at nid00218:~/>
>
> The offending line appears to be 463 in
> src/pm/hydra/tools/topo/hwloc/topo_hwloc.c, but I don't know if the "\n"
> goes there or in the definition of HYDU_snprintf.
>
> Thanks,
>
> Jeff
>
> --
> Jeff Hammond
> jeff.science at gmail.com <mailto:jeff.science at gmail.com>
> http://jeffhammond.github.io/
>
>
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