csharp / expert
Snippet
SIMD Vectorization with Vector<T>
Single Instruction, Multiple Data (SIMD) allows a single CPU instruction to process multiple data points simultaneously. Vector<T> in C# enables hardware-accelerated parallel processing on arrays, significantly boosting performance for mathematical and data-heavy algorithms.
snippet.cs
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public void VectorAdd(int[] a, int[] b, int[] result) {int vSize = Vector<int>.Count;for (int i = 0; i <= a.Length - vSize; i += vSize) {var v1 = new Vector<int>(a, i);var v2 = new Vector<int>(b, i);(v1 + v2).CopyTo(result, i);}}
Breakdown
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int vSize = Vector<int>.Count;
Retrieves the number of elements the hardware can process in one register (e.g., 4 or 8).
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(v1 + v2).CopyTo(result, i);
Performs addition on all vector elements at once and writes them back to memory.