Current "fastest" supercomputer is … APU powered !

Go figure. Between 6 and 3 years ago, when we were pitching HPC accelerators to VCs, trying to convince them that it was inevitable that supercomputing was going this route, we (optimistically) predicted that the worlds fastest machine would be Accelerator Processing Unit (APU) based in 2012. Well, we were wrong. November 2010 is the … Read moreCurrent "fastest" supercomputer is … APU powered !

Half open drivers … OFED stacks with verbs ABIs that don't match the kernel's verb ABI …

I just ran through another update exercise. IB cards, OFED stack. GlusterFS atop this. Cards are well known vendors cards. They work pretty well.
But …
only with very specific kernels. Other kernels need not apply.
Our 2.6.32.22 kernel is pretty darned fast (so our customers tell us). Now lets build the OFED 1.5.2 … and see what happens …

Read moreHalf open drivers … OFED stacks with verbs ABIs that don't match the kernel's verb ABI …

How cool is this …

Customers machine went down. They have a spare (buy them in pairs). Needed us to look at it. Set their unit up to boot from a virtual CD over the IPMI port. ?Pointed that virtual CD at a bootserver we had built in a VM. Poked some holes in the firewall. And voila. The machine … Read moreHow cool is this …