[mpich-discuss] IBM BG/Q collectives

[Jeff Hammond]

A binary tree is the implementation of last resort.

See these papers for details of the MPI collective implementations on Blue
Gene:
- http://dx.doi.org/10.1177/1094342014552086
- http://dx.doi.org/10.1109/HOTI.2009.12
(this is not an inclusive list)

http://lists.mpich.org/pipermail/discuss/2015-March/003754.html has some
related info.

Jeff

On Wed, Nov 18, 2015 at 12:53 PM, Jen B <jenbna at gmail.com> wrote:

> Hello,
>
> I have a couple of questions about BG/Q collectives and would appreciate
> any help.
> I was wondering if Do IBM BG/Q MPI collectives use binomial tree?
> Once I find the name of the algorithm used by the MPI collective routine
> using MPIX_Get_last_algorithm_name, is there a quick reference or guide to
> check how it is implemented?
>
> Thanks!
> Jen
>
>
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-- 
Jeff Hammond
jeff.science at gmail.com
http://jeffhammond.github.io/
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