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

From: Jeff Hammond <jeff.science AT gmail.com>
To: "charm AT cs.illinois.edu" <charm AT cs.illinois.edu>
Subject: [charm] Adaptive MPI needs MPI_WIN_BASE (and other attributes)
Date: Tue, 12 Jan 2016 14:41:06 -0800

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/

[charm] Adaptive MPI needs MPI_WIN_BASE (and other attributes), Jeff Hammond, 01/12/2016
- Re: [charm] Adaptive MPI needs MPI_WIN_BASE (and other attributes), Eric Bohm, 01/12/2016
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  - Re: [charm] Adaptive MPI needs MPI_WIN_BASE (and other attributes), Sam White, 01/12/2016
    - Re: [charm] Adaptive MPI needs MPI_WIN_BASE (and other attributes), Jeff Hammond, 01/12/2016
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      - Re: [charm] Adaptive MPI needs MPI_WIN_BASE (and other attributes), Sam White, 01/13/2016
        
        Re: [charm] Adaptive MPI needs MPI_WIN_BASE (and other attributes), Jeff Hammond, 01/13/2016
        
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        Re: [charm] Adaptive MPI needs MPI_WIN_BASE (and other attributes), Sam White, 01/13/2016
        
        Re: [charm] Adaptive MPI needs MPI_WIN_BASE (and other attributes), Jeff Hammond, 01/13/2016
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        Re: [charm] [ppl] Adaptive MPI needs MPI_WIN_BASE (and other attributes), Sam White, 01/26/2016