<p>Yes, well, presumably the implementation is the same. We use the old name in PETSc because we are somehow obliged to work on systems that don't have an MPI-2 implementation. </p>
<div class="gmail_quote">On May 11, 2012 1:32 PM, "Jeff Hammond" <<a href="mailto:jhammond@alcf.anl.gov">jhammond@alcf.anl.gov</a>> wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
MPI_Attr_get "is deprecated and is supersded by MPI_COMM_GET_ATTRin<br>
MPI-2.0," according to the MPI 2.2 standard page 463. Hence, Jed's<br>
question should be requeued with s/MPI_Attr_get/MPI_Comm_get_attr/g".<br>
<br>
Jeff<br>
<br>
On Fri, May 11, 2012 at 1:24 PM, Jeff Squyres <<a href="mailto:jsquyres@cisco.com">jsquyres@cisco.com</a>> wrote:<br>
> Just curious -- what's your use case for this?<br>
><br>
> I think the prevailing assumption in the forum was that attributes weren't used much, and attribute set/get performance definitely didn't matter.<br>
><br>
><br>
> On May 11, 2012, at 2:17 PM, Jed Brown wrote:<br>
><br>
>> Can you make this fast, like ~100 clocks for the common case?<br>
>><br>
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><br>
> --<br>
> Jeff Squyres<br>
> <a href="mailto:jsquyres@cisco.com">jsquyres@cisco.com</a><br>
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<br>
<br>
--<br>
Jeff Hammond<br>
Argonne Leadership Computing Facility<br>
University of Chicago Computation Institute<br>
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</blockquote></div>