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<p>Hallo Kilian,</p>
<p><br></p>
<p>Samstag, 19. April 2008, meintest Du:</p>
<p><br></p>
<p><span class=rvts6>KC> On Wednesday 09 April 2008 11:48:19 am Greg Lindahl wrote:</span></p>
<p><span class=rvts7>>> p.s. did anyone see this blog posting claiming that it takes Linux</span></p>
<p><span class=rvts7>>> clusters several minutes to start a 2048 core job?</span></p>
<p><br></p>
<p><a class=rvts8 href="http://terboven.spaces.live.com/Blog/cns!EA3D3C756483FECB!267.entry">>> http://terboven.spaces.live.com/Blog/cns!EA3D3C756483FECB!267.entry</a></p>
<p><br></p>
<p><span class=rvts7>>> I would have commented, but you have to have a Microsoft ID to</span></p>
<p><span class=rvts7>>> comment.</span></p>
<p><br></p>
<p><span class=rvts6>KC> That's a pretty amusing blog, actually. See</span></p>
<p><a class=rvts8 href="http://terboven.spaces.live.com/blog/cns!EA3D3C756483FECB!255.entry">KC> http://terboven.spaces.live.com/blog/cns!EA3D3C756483FECB!255.entry</a><span class=rvts9> </span></p>
<p><span class=rvts6>KC> (wonderful permalinks, btw).</span></p>
<p><br></p>
<p><br></p>
<p>Read this arcticle to the end:</p>
<p><br></p>
<p><br></p>
<p><a name="ctl00_MainContentPlaceholder_ctl01_ctl00_lblEntry"></a>
<span class=rvts22>"Finally, lets take a quick look at some performance measurements. From the Intel MPI Benchmark Suite V3.1 I used the MPI-1 part to measure the latency and bandwidth. Please note that you have to divide the PingPong-latency by two in order to get the "real" MPI-latency. In doing so we see a MPI latency of aboud 2.9 us on our 4x DDR InfiniBand.</span> "</p>
<p><br></p>
<p>What? They divided the number of the benchmark by two? Correct me if i'm wrong but i was always assuming that the benchmark does this himself!</p>
<p><br></p>
<p>Can somebody confirm that? </p>
<p><br></p>
<p>Cheers,</p>
<p>Jan</p>
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