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Hi all,
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<div class="">I have done a pass through Chapter 3 looking at the Pythonization changes (a little late).</div>
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<div class="">I have found only one issue with the changes being made/reviewed.</div>
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<div class="">0) In MPI_WAITANY and MPI_TESTANY the index parameter is described as "(integer)" in both versions but should be "(non-negative integer)" in the new version. This makes it consistent with tag, source, etc. It is non-negative or MPI_UNDEFINED but
never negative.</div>
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<div class="">I reported this to the BigCount WG already but please indicate (asap) if you disagree with this alteration.</div>
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<div class="">I have marked the Google spreadsheet with an ‘X’ to indicate that our review of this chapter for Pythonization is complete. Let me know ASAP if you have Pythonization-related issues.</div>
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<div class="">I have also found a few things that we should deal with as separate errata.</div>
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<div class="">1) The LIS binding for MPI_TESTANY includes a mention of MPI_UNDEFINED in its description of the index parameter but MPI_WAITANY does not. We could fix that inconsistency either by removing the mention from the MPI_TESTANY binding or by adding
it to the MPI_WAITANY binding. The normative text describes the use of MPI_UNDEFINED in both cases, so we would only be changing one of the LIS bindings.</div>
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<div class="">2) The MPI_WAITALL and MPI_TESTALL bindings for F08 give the exact size for the array_of_requests but not for the array_of_statuses, even though they must be identically sized. We could fix this by changing "(*)" to "(count)” in the rendered document
(by including the size of the array in the Python).</div>
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<div class="">3) The F08 bindings for all variants of the MPI_TEST, MPI_WAIT, and MPI_PROBE functions and the MPI_REQUEST_GET_STATUS function do not specify an INTENT for the status(es) parameter. We could fix this by including “INTENT(OUT)” in all cases (by
choosing the correct Python setting).</div>
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<div class="">4) The LIS binding for MPI_CANCEL lists the request parameter as IN but the function “marks the request for cancellation”, i.e. could modify it. This intent is implied by the C binding (the absence of const). Compare with MPI_START as well. We
could fix this by changing “IN” to “INOUT” in the LIS binding and changing the F08 binding from “INTENT(IN)” to “INTENT(INOUT)”.</div>
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<div class="">I’d like to discuss these errata over email this week - if we can decide to proceed on any of them soon enough, we can create errata tickets in time for the next face-to-face, i.e. in time to be included in the MPI-4.0 document.</div>
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Cheers,</div>
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Dan.</div>
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—<br class="">
Dr Daniel Holmes PhD<br class="">
Architect (HPC Research)<br class="">
<a href="mailto:d.holmes@epcc.ed.ac.uk" class="">d.holmes@epcc.ed.ac.uk</a><br class="">
Phone: +44 (0) 131 651 3465<br class="">
Mobile: +44 (0) 7940 524 088<br class="">
Address: Room 2.09, Bayes Centre, 47 Potterrow, Central Area, Edinburgh, EH8 9BT</div>
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The University of Edinburgh is a charitable body, registered in Scotland, with registration number SC005336.</div>
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