đź’Ą Discover this must-read post from Hacker News đź“– đź“‚ Category: âś… Key idea: What’s SIMD? Why SIMD?Hardware that does arithmetic is cheap, so any CPU made this century has plenty of it. But you still only have one instruction decoding block and it is hard to get it to go fast, so the arithmetic hardware is vastly underutilized.To get around the instruction decoding bottleneck, you can feed the CPU a batch of numbers all at once for a single arithmetic operation like addition. Hence the name: “single instruction, multiple data,” or SIMD for short.Instead of adding two numbers together,…
