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Are you familiar with UltraCluster? https://aws.amazon.com/ec2/ultraclusters/ https://aws.amazon.com/ec2/ultraclusters/ It's a product directly intended to com
by dekhn 3y ago
Are you familiar with UltraCluster? https://aws.amazon.com/ec2/ultraclusters/ https://aws.amazon.com/ec2/ultraclusters/
It's a product directly intended to compete with other HPC fabrics. I believe it was launched after your paper was published.
Even before then, AWS had ways of placing all your jobs on the same rack, which used same-rack switching. Whenever AWS told us stuff about HPC we tested it carefully, and I'd say that before ultracluster, AWS was being misleading about performance, although Azure was not.
- gnufx 3y agoI don't do AWS any more, but the adapters apparently used with UltraCluster had a latency of 15µs last I knew. I think the NAS benchmarks are overall less latency sensitive than DFT and would benefit less from GPUs, and I assume UltraCluster is rather expensive even by AWS standards.