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<p class="MsoNormal"><b><span style="font-size:12.0pt;color:black">From: </span></b><span style="font-size:12.0pt;color:black">Beowulf <beowulf-bounces@beowulf.org> on behalf of Jim Cownie <jcownie@gmail.com><br>
<b>Date: </b>Wednesday, October 14, 2020 at 4:17 AM<br>
<b>To: </b>Douglas Eadline <deadline@eadline.org><br>
<b>Cc: </b>"beowulf@beowulf.org" <beowulf@beowulf.org><br>
<b>Subject: </b>[EXTERNAL] Re: [Beowulf] ***UNCHECKED*** Re: Spark, Julia, OpenMPI etc. - all in one place<o:p></o:p></span></p>
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<p class="MsoNormal">As ever, good stuff from Doug, but I’ll just add a little more background.
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<p class="MsoNormal">When we standardised MPI-1 (I was in the room in Dallas for most of this :-)) we did not expect it still to be the dominant interface which users would be coding to 25 years later, rather we expected that MPI would form a reasonable basis
for higher level interfaces to be built upon, and we hoped that it would provide enough performance and be rich enough semantically to allow that to happen.<o:p></o:p></p>
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<p class="MsoNormal">Therefore our aim was not to make it a perfect, high-level, end-user interface, but rather to make it something which we (as implementers) knew how to implement efficiently while providing a reasonable, portable, vendor-neutral layer which
would be usable either by end-user code, or by higher-level libraries (which could certainly include runtime libraries for higher level languages).<o:p></o:p></p>
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<p class="MsoNormal">>>>> one can say the same about Fortran and C – which is why they are persistently popular<o:p></o:p></p>
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