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I wonder whether we should be making use of MPI on the BG/P where we
can ... I suspect that is what is optimized, rather than the IP stack.<br>
<br>
Mihael Hategan wrote:
<blockquote cite="mid:1207555192.22686.6.camel@blabla.mcs.anl.gov"
type="cite">
<pre wrap="">On Mon, 2008-04-07 at 07:03 +0000, Ben Clifford wrote:
</pre>
<blockquote type="cite">
<pre wrap="">there's an interesting issue here of how much we should (in our general
codebase, rather than in special customisations such as plugging in
falkon) be supporting 'wierd' systems such as the BG/P which have,
apparently, neither a decent shared filesystem or IP layer network fabric,
vs support for more traditional clusters which seem to have both IP layer
interconnect between nodes and decent shared filesystems.
</pre>
</blockquote>
<pre wrap=""><!---->
That is a good point. However, UDP was chosen to support systems with a
very large number of CPUs in the first place. In other words if UDP
won't work on BG/P, I don't see much reason for going with it.
</pre>
<pre wrap=""><!---->
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