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Dear Dewight,<br>
<br>
As far as I know, none of the 3DEM packages have been adapted to run
on Phi boards. This means you could run them (provided you
recompiled them using the Intel compilers) but only in native mode,
which involves SSH'ing onto the boards. And even then, without
optimization, you'd probably get worse performance than on a
top-of-the-range Xeon chip. However I guess if you pack enough cards
per node you might get improved density for your cluster.<br>
<br>
The topic of Phi boards was brought up at the NRAMM meeting last
week at Scripps and it seemed no-one had tried them yet.<br>
<br>
Here at Janelia we bought a Phi 7200 to test out, but haven't got
round to doing much with it because of the time required to
investigate program optimization and the relatively meager
prospective gains.<br>
<br>
So, bottom line: don't go for a cluster with Phi boards, because
none of the 3DEM software will be ready for them.<br>
<br>
Hope this helps,<br>
Alexis<br>
<br>
<div class="moz-cite-prefix">On 11/12/2014 10:08 AM, Dewight R.
Williams wrote:<br>
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<p class="MsoNormal">Dear 3dem, <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Has anyone performed 3D single particle
reconstruction on the new Intel Xeon Phi boards? When you
performed this work did the software need to be recompiled or
was it implemented through standard openMPI? What software
were you using Frealign, Relion, Xmipp, EMAN2, etc? Thanks,
I’m debating on which architecture I want to invest in for a
local cluster and any feedback on these questions would be
very appreciated. <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Dewight<o:p></o:p></p>
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<br>
<br>
<pre class="moz-signature" cols="72">--
Alexis Rohou
Research Specialist
Grigorieff Lab
<a class="moz-txt-link-freetext" href="http://grigoriefflab.janelia.org">http://grigoriefflab.janelia.org</a>
Tel. +1 571 209 4000 x3485</pre>
<pre class="moz-signature" cols="72">
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