Are we going to force implementers to support 8-byte atomics when the load-store granularity is 4-bytes? I guess it doesn't matter so much but I thought it prudent to ask. I guess this was addressed already. Jeff On Tue, Jul 17, 2012 at 6:26 PM, Jeff Hammond <[email protected]> wrote:

I don't know that floating-point compare is well-defined. You really have ask "if abs(x-y)<tolerance" and not "if x==y".

I think only fixed-point types should be valid for CAS.

Jeff

On Tue, Jul 17, 2012 at 6:14 PM, Dave Goodell <[email protected]> wrote:

...

Discussed the complex types in COMPARE_AND_SWAP issue. "Fortran Integer" category is permitted, but "Complex" category is not, primarily because of width. Since "Fortran Integer" contains wide types, shouldn't we just permit "Complex" and "Floating point" as well? Consensus was to stick with the existing text which permits only "C integer, Fortran integer, Logical, Multi-language types, or Byte".

Group review (esp. Jim & Sreeram): https://svn.mpi-forum.org/trac/mpi-forum-web/ticket/187

incorporate Jim suggested change (Torsten): https://svn.mpi-forum.org/trac/mpi-forum-web/ticket/271

we think we are unaffected, but need a second check (Jim): https://svn.mpi-forum.org/trac/mpi-forum-web/ticket/278

Double-check that C++ is not referenced in the RMA chapter (Pavan): https://svn.mpi-forum.org/trac/mpi-forum-web/ticket/281

Needs review (Dave): https://svn.mpi-forum.org/trac/mpi-forum-web/ticket/300

Think unaffected, but slim chance of Rput/Rget being affected (Pavan): https://svn.mpi-forum.org/trac/mpi-forum-web/ticket/317

Need to check implementation of various (4?) "flush is non-local" changes (Dave): https://svn.mpi-forum.org/trac/mpi-forum-web/ticket/270

Need to check disp_unit change (Jim & Sreeram): https://svn.mpi-forum.org/trac/mpi-forum-web/ticket/284

After the above items have all been dealt with, all chapter committee members should re-read the whole chapter in the *clean* document (the one _without_ the changebars and colored text) to look for obvious typos and inconsistencies.

-Dave

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-- Jeff Hammond Argonne Leadership Computing Facility University of Chicago Computation Institute [email protected] / (630) 252-5381 http://www.linkedin.com/in/jeffhammond https://wiki.alcf.anl.gov/parts/index.php/User:Jhammond

-- Jeff Hammond Argonne Leadership Computing Facility University of Chicago Computation Institute [email protected] / (630) 252-5381 http://www.linkedin.com/in/jeffhammond https://wiki.alcf.anl.gov/parts/index.php/User:Jhammond