ServerWorks Grand Champion HE chipset supports dual Pentium 4 processors. There's 3.2 GB/s to each proc, and with quad-interleaved DDR memory, you've got a 6.4 GB/s memory bandwidth.
Compaq's DL530 and ML580 seem to fit what you're looking for. They have 4 100MHz 64bit PCI-X busses. The ML580 has 7 64-bit PCI-X slots. For a single processor system, I think the FSB becomes the bottleneck, at 3.2 GB/s (that's GigaBit, right?). So that would be 400 MegaBytes/sec. (4) 117 MegaByte/sec connections would be 468 MByte/sec. How does DMA fit into all of this? Can data be written/read to/from disk into a buffer via DMA, and thus not eat up FSB bandwidth? Same question for the networking. I know, that's more a question of what the drivers do - I'm just writing down some of the questions going on in the back of my head... Ok, so the disk system really would be the bottleneck, unless you had a really big RAM drive or most of the file requests were for data already in cache. For testing that shouldn't be a problem. http://www.serverworks.com/products/GCHE.html Brian Davidson George Mason University ----- Original Message ----- From: Richard Sharpe <[EMAIL PROTECTED]> > Hi, > > On Friday I managed to get a single PC to suck down something like > 117MB/s > from a NetApp F840 using cifs-load-gen. > > The only PC-like platforms that I can think of that would be able > to > [ab]use all the bandwidth available in two or more GigE adapters > would be > things like the AMD 760MPX-based mobos or some Intel mobos with > multiple > 64-bit 66MHz PCI slots. Can anyone point to any others? > > I know that Intel provide dual GigE channels on one card, so this > would be > a way to put four into one PC, but I am not sure you would have > much > memory bandwidth left over. > > I want to find a way to test the multi=interface stuff I want to > put into > cifs-load-gen and find where its limits are from a load-generation > point > of view.
