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by imtringued
169 days ago
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The crazy part about this is that (auto) vectorization in Rust looks something like this: iter.chunks(32).map(vectorized) Where the vectorized function checks if the chunk has length 32, if yes run the algorithm, else run the algorithm. The compiler knows that the chunk has a fixed size at compile time in the first block, which means it can now attempt to vectorize the algorithm with a SIMD size of 32. The else block handles the scalar case, where the chunk is smaller than 32. |
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