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<p>Hallo Gilad,</p>
<p><br></p>
<p>Montag, 5. Mai 2008, meintest Du:</p>
<p><br></p>
<p><br></p>
<p><span class=rvts7>>> Bonding (or multi-rail) does not make sense with "standard IB" in PCIe</span></p>
<p><span class=rvts6>GS> x8 since the PCIe connection limits the transfer rate of a single</span></p>
<p><span class=rvts6>GS> IB-Link already. </span></p>
<p><br></p>
<p><span class=rvts7>>> My hint would be to go for Infinipath from QLogic or the new ConnectX</span></p>
<p><span class=rvts6>GS> from Mellanox since message rate is probably your limiting factor and</span></p>
<p><span class=rvts6>GS> those technologies have a huge advantage over standard Infiniband</span></p>
<p><span class=rvts6>GS> SDR/DDR. </span></p>
<p><br></p>
<p><br></p>
<p><span class=rvts7>>> Infinipath and ConnectX are available as DDR Infiniband and provide a</span></p>
<p><span class=rvts6>GS> bandwidth of more than 1800 MB/s.</span></p>
<p><span class=rvts6>GS> </span></p>
<p><span class=rvts6>GS> </span></p>
<p><span class=rvts6>GS> Boding can provide more bandwidth if needed. Each PCIe x8 slot can</span></p>
<p><span class=rvts6>GS> provide (in average) around 1500MB/s, therefore using IB DDR (no need to</span></p>
<p><span class=rvts6>GS> be ConnectX), you will get 1500MB/s uni-dir from each PCIe Gen1 x8 slot.</span></p>
<p><br></p>
<p>Ahh... sorry... i was just thinking about dual-port cards. Not different cards in different slots. </p>
<p><br></p>
<p>Cheers,</p>
<p>Jan</p>
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