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Phi is 64 or 68 cores laid out on a grid, each with 4 way hyperthreading, in addition to AVX512 SIMD. The typical programming model makes it look like a CPU bu
by marmaduke 8y ago
Phi is 64 or 68 cores laid out on a grid, each with 4 way hyperthreading, in addition to AVX512 SIMD. The typical programming model makes it look like a CPU but calling it a SIMD system is odd.
- gnufx 8y agoOurs have 72 cores. I meant they're a box full of SIMD rather than one SIMD unit. You need to take good advantage of the AVX512 -- or possibly the MCDRAM or fast on-chip MPI -- to make them worthwhile.