<br>[NOTE: I apologise for anyone receiving this twice; my other e-mail address is behaving strangely.]<br><br><span>Hi everyone,<br><br> I'm scouring through the web and reading the archives trying to track<br>down experiences and information from people with large-memory commodity
<br>nodes. A lab I know is looking at getting several 64GB or 128GB<br>Opteron nodes, but unfortunately I've not been focused on hardware much<br>over the past few months, so I'm unsure as to what is out there and what<br>
peoples experiences are.<br><br> Has anyone recently purchased a 64GB+ Opteron (or Woodcrest) node<br>recently? I'm curious about everything from the size of the DIMMs used<br>to motherboard advice to costs to any 'gotchas' that happened to arise.
<br><br> I imagine that the 128GB nodes would require 8-CPU boards (with 32 DIMM<br>slots) unless 8GB RAM modules are now available? Presumably if they<br>are, they're prohibitively priced, too.<br><br> Also with regards to motherboards, looking at the 4-CPU ones shows a
<br>wide array of different capabilities for speeds of RAM. I seem to<br>remember a discussion a while back (which I'll look up later) on the<br>effect of different speeds of DDR2 memory on performance, but what about<br>
DDR2 (any speed) vs. DDR? How much of a hit does performance take?<br><br> I know, lots of questions, some of which I'll undoubtedly find answers<br>to in my own research, but the lab wants some sense of the information
<br>by Wednesday, so I'm throwing this out to the collective wisdom of this<br>list. ;)<br><br> Thanks very much for any advice!<br><br> Cheers,<br> - Brian</span>