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<DIV><SPAN class=963574206-05062006><FONT face=Arial size=2>We've focused on SDP
and MPI performance so far on RHEL4 U3 x86_64. Some bad
news:</FONT></SPAN></DIV>
<UL>
<LI><SPAN class=963574206-05062006><FONT face=Arial size=2>MVAPICH MPI small
message latency is slightly worse across the board, as measured by OSU latency
benchmarks. For example:</FONT></SPAN></LI>
<UL>
<LI><SPAN class=963574206-05062006><FONT face=Arial size=2>Lion Mini SDR:
small message latency up from 3.43 usec to 3.53 usec</FONT></SPAN></LI>
<LI><SPAN class=963574206-05062006><FONT face=Arial size=2>Cheetah SDR:
small message latency up from 3.57 usec to 3.73 usec</FONT></SPAN></LI></UL>
<LI><SPAN class=963574206-05062006><FONT face=Arial size=2>SDP throughput
worse and small message latency worse than rc4. For
example</FONT></SPAN></LI>
<UL>
<LI><SPAN class=963574206-05062006><FONT face=Arial size=2>SDP small message
latency <STRONG><EM>worse</EM></STRONG> than IPoIB now</FONT></SPAN></LI>
<LI><SPAN class=963574206-05062006><FONT face=Arial size=2>Lion Mini SDR:
throughput dropped from 7.24 Gb/sec to 6.45 Gb/sec</FONT></SPAN></LI>
<LI><SPAN class=963574206-05062006><FONT face=Arial size=2>Lion Mini SDR:
latency grew from 17.5 usec to 30.0 usec</FONT></SPAN></LI></UL></UL>
<DIV align=left><FONT face=Arial size=2>Scott Weitzenkamp</FONT></DIV>
<DIV align=left><FONT face=Arial size=2>SQA and Release Manager</FONT></DIV>
<DIV align=left><FONT face=Arial size=2>Server Virtualization Business
Unit</FONT></DIV>
<DIV align=left><FONT face=Arial size=2>Cisco Systems</FONT></DIV>
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