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A GPU is much wider than a single core, but only slightly wider than a server CPU. For example, a 28-core Xeon has dual-issue FMA with 6-cycle latency and 16-wi
by jedbrown 8y ago
A GPU is much wider than a single core, but only slightly wider than a server CPU. For example, a 28-core Xeon has dual-issue FMA with 6-cycle latency and 16-wide packed SP registers, thus reaches peak floating point performance with 5376 independent operations in-flight at any instant. It's only about 4x higher for V100, which has higher TDP.