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by bri3d
2188 days ago
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this is well-addressed here: https://github.com/simdjson/simdjson/blob/master/doc/perform... . first off, AVX2 is a subset of SIMD instructions - SIMDjson includes a large number of implementations including several which do not use AVX2 at all. next, only a subset of AVX2 instructions cause downclocking (namely, the 512 bit wide ones), which SIMDjson does not use. throwing out the use of "SIMD" entirely because you read an article about a specific AVX512 instruction which caused down-clocking might be a bit premature, no? |
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