I noticed a few news reports on Intel/AMD considering the Clearspeed co-processor.
Looks like a fairly interesting widget, here's an Intel/Clearspeed paper that describes it: http://www.clearspeed.com/downloads/Intel%20Math%20Kernel%20whitepaper.pdf Some interesting snippets on the Clearspeed advance board: * 192 pipelines, 2 flops per clock (not fused), 250 MHz, peak 96GFlops (I believe this is for 2 chips) * 50 GFlops sustained with the DGEMM kernel * 1 GB of ram per board. * 128 registers per PE, register file allows 3 reads 2 writes per clock * 1.44 MB of SRAM that can deliver one word per FP op per clock. * 800MB/sec over pci-x, enough for 50 GFlops on DGEMM. * Less than 10 watts while sustaining 25 GFlops * 1-D complex FFTs of 1024 elements @ 400k per second (20 GFlops with 32-bit), but only 1/4th of that streaming because of pci-x bottlenecks. * 12 GFlops when running 2-d FFTs (512x512 single precision) that are resident on board (in the 1GB) In any case it looks like an interesting development. Speaking of which, what is the double precision peak rate of today's p4 and opteron? One 128 bit SSE operation every other cycle (so 1 64 bit flop per cycle)? I believe Intel mentioned doubling this rate at IDF (shipping sometime in the 2nd half of this year). -- Bill Broadley Computational Science and Engineering UC Davis _______________________________________________ Beowulf mailing list, [email protected] To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
