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You'd be surprised. A lot of supercomputers aren't that much about individual CPU core perf, but having a lot of low power cores connected in a novel way. The
by monocasa 3y ago
You'd be surprised. A lot of supercomputers aren't that much about individual CPU core perf, but having a lot of low power cores connected in a novel way. The BlueGene supercomputers were composed of low spec PowerPC cores (even for the time).
High perf/watt matter more than just high perf/node, but even that balanced against 'how low latency can the interconnect be'.
You then hit the high FLOP count with tons of nodes.
To be fair Nvidia realized this paradigm years ago too, which is why they bought Mellanox.
- fsckboy 3y agoI can believe what you are saying, but what are you saying, is it heat (ie cooling), power (cost), or hw cost/flop (because these chips are cheaper than screamers) that makes this an optimal solution?
- monocasa 3y agoI'd describe the end goal as TCO of achievable FLOP. So a lot of factors come out of that, and a lot of designs that take interesting stabs at new balances towards that goal.