48 lines
903 B
Plaintext
48 lines
903 B
Plaintext
#pragma once
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#include <stdint.h>
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namespace cacheflow {
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// A vector type to store Q, K, V elements.
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template<typename T, int VEC_SIZE>
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struct Vec {};
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// A vector type to store FP32 accumulators.
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template<typename T>
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struct FloatVec {};
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// Template vector operations.
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template<typename Acc, typename A, typename B>
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inline __device__ Acc mul(A a, B b);
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template<typename T>
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inline __device__ float sum(T v);
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template<typename T>
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inline __device__ float dot(T a, T b) {
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return sum(mul<T, T, T>(a, b));
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}
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template<typename A, typename T>
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inline __device__ float dot(T a, T b) {
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return sum(mul<A, T, T>(a, b));
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}
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template<typename T>
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inline __device__ void zero(T& dst) {
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constexpr int WORDS = sizeof(T) / 4;
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union {
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T raw;
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uint32_t words[WORDS];
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} tmp;
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#pragma unroll
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for (int ii = 0; ii < WORDS; ++ii) {
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tmp.words[ii] = 0u;
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}
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dst = tmp.raw;
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}
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} // namespace cacheflow
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