3 ms·
This is a misrepresentation. Included in the analyses are single-node runs, which don't care about network cards etc. This is a platform comparison, not a CPU
by stonogo 3y ago
This is a misrepresentation. Included in the analyses are single-node runs, which don't care about network cards etc. This is a platform comparison, not a CPU showdown; among the questions here is whether Grace-based nodes are feasible at all for production HPC. The answer is a tentative yes, although I still have concerns about cooling at this density in a general-use (i.e. highly fluctuating) workload.
But mostly, these numbers are for their users, who are aware the system contract has been awarded but want to know what to expect when their workloads hit the new system.
Incidentally, MareNostrum 4 has a 100gbit Omnipath fabric. I'm sure they'd love to test against latest Omnipath, but Intel dumped the tech, so our choices these days are 200/400 gbit Ethernet or similar-throughput Infiniband.