<br>Hi guys,<br><br> I'm beginning to look into configurations for a new cluster and with the AMD 12-core and Intel 8-core chips 'here' (or coming soonish), I'm curious if anyone has any data on the effects of the messaging rate of the IB cards. With a 4-socket node having between 32 and 48 cores, lots of computing can get done fast, possibly stressing the network. <br>
<br> I know Qlogic has made a big deal about the InfiniPath adapter's extremely good message rate in the past... is this still an important issue? How do the latest Mellanox adapters compare? (Qlogic documents a ~30M messages processsed per second rate on its QLE7342, but I didn't see a number on the Mellanox ConnectX-2... and more to the point, do people see this effecting them?)<br>
<br> On a similar note, does a dual-port card provide an increase in on-card processing, or 'just' another link? (The increased bandwidth is certainly nice, even in a flat switched network, I'm sure!)<br><br>
I'm primarily concerned with weather and climate models here - WRF, CAM, CCSM, etc., and clearly the communication rate will depend to a large degree on the resolutions used, but any information, even 'gut instincts' people have are welcome. The more info the merrier.<br>
<br> Thanks very much,<br> - Brian<br><br><br>