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Re: [charm] Adaptive MPI needs MPI_WIN_BASE (and other attributes)


Chronological Thread 
  • From: Eric Bohm <ebohm AT illinois.edu>
  • To: <charm AT lists.cs.illinois.edu>, <jeff.science AT gmail.com>
  • Subject: Re: [charm] Adaptive MPI needs MPI_WIN_BASE (and other attributes)
  • Date: Tue, 12 Jan 2016 17:03:47 -0600

Thanks Jeff,

I have submitted this to our Redmine Issue tracker.

https://charm.cs.illinois.edu/redmine/issues/942

On 01/12/2016 04:41 PM, Jeff Hammond wrote:
I am using Charm++ 6.7.0 for testing of the PRK.  I recently added code that fetches the MPI_WIN_BASE attribute on RMA windows.  This attribute was introduced in MPI 2.0, so it is not new.

Adaptive MPI does not define MPI_WIN_BASE, as demonstrate in https://travis-ci.org/jeffhammond/PRK/jobs/101958477.  I've already pushed a workaround (https://github.com/jeffhammond/PRK/commit/a511033a10995594bb8c90a6b0cdce6077bd3347), but it leads to a memory leak (this doesn't really matter, since the program terminates almost immediately thereafter, but it is shameful programming to do such things intentionally).

In short, all your MPI_WIN_BASE do not belong to us :-) <groan>

And if Adaptive MPI is setting MPI_VERSION=3 (I have not looked), then it needs the window attributes added in MPI 3.0.

I don't think these are too hard to add, and I imagine that I could contribute a patch, but I don't have any free cycles at the moment.  Sorry.

Thanks,

Jeff

--
Jeff Hammond
jeff.science AT gmail.com
http://jeffhammond.github.io/




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