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msclrhd
on July 21, 2019
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Intel Prepares to Graft Google’s Bfloat16 onto Pro...
4x8-bit values in a 32-bit value? SIMD does this to perform an operation on 4 8-bit values in a single 32-bit register. There are other configurations, IIRC.
https://en.wikipedia.org/wiki/SIMD#Software
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https://en.wikipedia.org/wiki/SIMD#Software