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What is the rankmap used for ? From: Jenke, Joachim <jenke@ itc. rwth-aachen. de> Sent: Monday, July 1, 2024 2: 21: 53 PM To: discuss@ mpich. org <discuss@ mpich. org> Cc: Niyaz Murshed <Niyaz. Murshed@ arm. com>; nd <nd@ arm. com>
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<div dir="ltr">What is the rankmap used for ? </div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Jenke, Joachim <jenke@itc.rwth-aachen.de><br>
<b>Sent:</b> Monday, July 1, 2024 2:21:53 PM<br>
<b>To:</b> discuss@mpich.org <discuss@mpich.org><br>
<b>Cc:</b> Niyaz Murshed <Niyaz.Murshed@arm.com>; nd <nd@arm.com><br>
<b>Subject:</b> Re: Custom rank for processes</font>
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<div dir="auto">MPI defines rank numbers to be consecutive from 0 to size-1. Your suggested numbering will not work.</div>
<div dir="auto">-Joachim </div>
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<div id="x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> Niyaz Murshed via discuss <discuss@mpich.org><br>
<b>Sent:</b> Monday, July 1, 2024 9:09:41 PM<br>
<b>To:</b> discuss@mpich.org <discuss@mpich.org><br>
<b>Cc:</b> Niyaz Murshed <Niyaz.Murshed@arm.com>; nd <nd@arm.com><br>
<b>Subject:</b> [mpich-discuss] Custom rank for processes</font>
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Hello, Is it possible to provide custom ranks to processes ? I see a param called “-rankmap” .. Does it provide this option? Is it possible to do something like below : Node1 => 2 processes => rank 2,3 Node2 => 2 processes => rank
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<p class="x_x_MsoNormal">Hello, </p>
<p class="x_x_MsoNormal">Is it possible to provide custom ranks to processes ?</p>
<p class="x_x_MsoNormal">I see a param called “-rankmap” .. Does it provide this option?</p>
<p class="x_x_MsoNormal"> </p>
<p class="x_x_MsoNormal">Is it possible to do something like below :</p>
<p class="x_x_MsoNormal">Node1 => 2 processes => rank 2,3</p>
<p class="x_x_MsoNormal">Node2 => 2 processes => rank 20,30</p>
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<p class="x_x_MsoNormal">Thanks.</p>
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