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BlockSelectImpl.cuh
/**
* Copyright (c) 2015-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD+Patents license found in the
* LICENSE file in the root directory of this source tree.
*/
// Copyright 2004-present Facebook. All Rights Reserved.
#include "../BlockSelectKernel.cuh"
#include "../Limits.cuh"
#define BLOCK_SELECT_DECL(TYPE, DIR, WARP_Q) \
extern void runBlockSelect_ ## TYPE ## _ ## DIR ## _ ## WARP_Q ## _( \
Tensor<TYPE, 2, true>& in, \
Tensor<TYPE, 2, true>& outK, \
Tensor<int, 2, true>& outV, \
bool dir, \
int k, \
cudaStream_t stream)
#define BLOCK_SELECT_IMPL(TYPE, DIR, WARP_Q, THREAD_Q) \
void runBlockSelect_ ## TYPE ## _ ## DIR ## _ ## WARP_Q ## _( \
Tensor<TYPE, 2, true>& in, \
Tensor<TYPE, 2, true>& outK, \
Tensor<int, 2, true>& outV, \
bool dir, \
int k, \
cudaStream_t stream) { \
auto grid = dim3(in.getSize(0)); \
\
constexpr int kBlockSelectNumThreads = 128; \
auto block = dim3(kBlockSelectNumThreads); \
\
FAISS_ASSERT(k <= WARP_Q); \
FAISS_ASSERT(dir == DIR); \
\
auto kInit = dir ? Limits<TYPE>::getMin() : Limits<TYPE>::getMax(); \
auto vInit = -1; \
\
blockSelect<TYPE, int, DIR, WARP_Q, THREAD_Q, kBlockSelectNumThreads> \
<<<grid, block, 0, stream>>>(in, outK, outV, kInit, vInit, k); \
CUDA_TEST_ERROR(); \
}
#define BLOCK_SELECT_CALL(TYPE, DIR, WARP_Q) \
runBlockSelect_ ## TYPE ## _ ## DIR ## _ ## WARP_Q ## _( \
in, outK, outV, dir, k, stream)