312 lines
14 KiB
Plaintext
312 lines
14 KiB
Plaintext
/*******************************************************************************
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* Copyright (c) 2015-2018 Skymind, Inc.
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*
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* This program and the accompanying materials are made available under the
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* terms of the Apache License, Version 2.0 which is available at
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* https://www.apache.org/licenses/LICENSE-2.0.
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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* SPDX-License-Identifier: Apache-2.0
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******************************************************************************/
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//
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// @author raver119@gmail.com
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//
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#include <execution/LaunchContext.h>
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#include <exceptions/cuda_exception.h>
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#include <system/op_boilerplate.h>
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#include <loops/reduce_float.h>
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#include <loops/scalar.h>
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#include <loops/legacy_ops.h>
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#include <helpers/DebugHelper.h>
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#include <types/types.h>
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#include <ops/specials_cuda.h>
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#include <cuda.h>
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#include <cuda_runtime.h>
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using namespace simdOps;
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////////////////////////////////////////////////////////////////////////
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template <typename X, typename Z, typename OpType>
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__global__ void simpleReduce(void *x, Nd4jLong *xShapeInfo,
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void *extraParams,
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void *z, Nd4jLong *zShapeInfo,
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int *dimension, int dimensionLength,
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void *reductionBuffer,
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Nd4jLong *tadOnlyShapeInfo, Nd4jLong *tadOffsets) {
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functions::reduce::ReduceFloatFunction<X,Z>::template transformCudaXD<OpType>(x, xShapeInfo, extraParams, z, zShapeInfo, dimension, dimensionLength, reductionBuffer, tadOnlyShapeInfo, tadOffsets);
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}
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////////////////////////////////////////////////////////////////////////
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template <typename X, typename Z, typename OpType>
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__global__ void simpleScalar(void *x, Nd4jLong *xShapeInfo,
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void *extraParams,
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void *z, Nd4jLong *zShapeInfo,
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int *dimension, int dimensionLength,
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void *reductionBuffer, Nd4jLong *tadOnlyShapeInfo) {
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functions::reduce::ReduceFloatFunction<X, Z>::template execScalarCuda<OpType>(x, xShapeInfo, extraParams, z, zShapeInfo, reductionBuffer, tadOnlyShapeInfo);
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}
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namespace functions {
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namespace reduce {
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////////////////////////////////////////////////////////////////////////
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template <typename X, typename Z>
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template <typename OpType>
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__device__ void ReduceFloatFunction<X,Z>::aggregatePartials(void *vsPartials, Nd4jLong tid, Nd4jLong numItems, void *vextraParams) {
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// start the shared memory loop on the next power of 2 less
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// than the block size. If block size is not a power of 2,
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// accumulate the intermediate sums in the remainder range.
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auto sPartials = reinterpret_cast<Z*>(vsPartials);
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auto extraParams = reinterpret_cast<Z*>(vextraParams);
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Nd4jLong floorPow2 = numItems;
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if (floorPow2 & (floorPow2 - 1)) {
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while (floorPow2 & (floorPow2 - 1))
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floorPow2 &= floorPow2 - 1;
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if (tid >= floorPow2)
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sPartials[tid - floorPow2] = OpType::update(sPartials[tid - floorPow2], sPartials[tid], extraParams);
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__syncthreads();
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}
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for (Nd4jLong activeThreads = floorPow2 >> 1; activeThreads; activeThreads >>= 1) {
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if (tid < activeThreads && tid + activeThreads < numItems)
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sPartials[tid] = OpType::update(sPartials[tid], sPartials[tid + activeThreads], extraParams);
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__syncthreads();
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}
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}
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////////////////////////////////////////////////////////////////////////
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template <typename X, typename Z>
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template <typename OpType>
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__device__ void ReduceFloatFunction<X,Z>::transformCudaXD( void *vx, Nd4jLong *xShapeInfo,
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void *vextraParams,
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void *vz, Nd4jLong *zShapeInfo,
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int *dimension, int dimensionLength,
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void *vreductionBuffer,
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Nd4jLong *tadOnlyShapeInfo, Nd4jLong *tadOffsets) {
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auto x = reinterpret_cast<X*>(vx);
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auto z = reinterpret_cast<Z*>(vz);
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auto extraParams = reinterpret_cast<Z*>(vextraParams);
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auto reductionBuffer = reinterpret_cast<Z*>(vreductionBuffer);
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//shared memory space for storing intermediate results
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__shared__ Z* sPartials;
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__shared__ int tadLength, numTads;
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__shared__ bool isPlainOutput;
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if (threadIdx.x == 0) {
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extern __shared__ unsigned char shmem[];
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sPartials = reinterpret_cast<Z*>(shmem);
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isPlainOutput = shape::order(zShapeInfo) == 'c' && shape::elementWiseStride(zShapeInfo) == 1;
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tadLength = shape::length(tadOnlyShapeInfo);
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numTads = shape::length(xShapeInfo) / tadLength;
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}
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__syncthreads();
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for (int r = blockIdx.x; r < numTads; r += gridDim.x) {
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auto tadOffsetForBlock = tadOffsets[r];
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sPartials[threadIdx.x] = OpType::startingValue(x + tadOffsetForBlock);
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for (int i = threadIdx.x; i < tadLength; i += blockDim.x) {
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auto xOffset = tadOffsetForBlock + shape::getIndexOffset(i, tadOnlyShapeInfo);
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sPartials[threadIdx.x] = OpType::update(sPartials[threadIdx.x], OpType::op(x[xOffset], extraParams), extraParams);
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}
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__syncthreads();
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// aggregate. do NOT reduce for elements > tadLength
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aggregatePartials<OpType>(sPartials, threadIdx.x, sd::math::nd4j_min<int>(blockDim.x, tadLength), extraParams);
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__syncthreads();
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if (threadIdx.x == 0)
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z[isPlainOutput ? r : shape::getIndexOffset(r, zShapeInfo)] = OpType::postProcess(sPartials[threadIdx.x], tadLength, extraParams);
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}
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}
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////////////////////////////////////////////////////////////////////////
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template <typename X, typename Z>
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template <typename OpType>
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__device__ void ReduceFloatFunction<X,Z>::execScalarCuda(void *vx, Nd4jLong *xShapeInfo,
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void *vextraParams,
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void *vz, Nd4jLong *zShapeInfo,
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void *vreductionBuffer,
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Nd4jLong *tadOnlyShapeInfo) {
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auto x = reinterpret_cast<X*>(vx);
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auto z = reinterpret_cast<Z*>(vz);
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auto extraParams = reinterpret_cast<Z*>(vextraParams);
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auto reductionBuffer = reinterpret_cast<Z*>(vreductionBuffer);
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auto tid = blockDim.x * blockIdx.x + threadIdx.x;
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//shared memory space for storing intermediate results
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__shared__ Z* sPartials;
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__shared__ Nd4jLong xEws;
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__shared__ Nd4jLong len;
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if(threadIdx.x == 0) {
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extern __shared__ unsigned char shmem[];
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sPartials = reinterpret_cast<Z*>(shmem);
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xEws = shape::elementWiseStride(xShapeInfo);
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len = shape::length(xShapeInfo);
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}
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__syncthreads();
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sPartials[threadIdx.x] = OpType::startingValue(x);
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if (xEws > 0)
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for (int i = tid; i < len; i += (blockDim.x * gridDim.x))
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sPartials[threadIdx.x] = OpType::update(sPartials[threadIdx.x], OpType::op(x[i * xEws], extraParams), extraParams);
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else
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for (int i = tid; i < len; i += blockDim.x * gridDim.x)
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sPartials[threadIdx.x] = OpType::update(sPartials[threadIdx.x], OpType::op(x[shape::getIndexOffset(i, xShapeInfo)], extraParams), extraParams);
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__syncthreads();
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aggregatePartials<OpType>(sPartials, threadIdx.x, sd::math::nd4j_min<int>(blockDim.x, len), extraParams);
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__syncthreads();
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if (gridDim.x > 1) {
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unsigned int *tc = (unsigned int *)reductionBuffer;
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__shared__ bool amLast;
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tid = threadIdx.x;
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if (threadIdx.x == 0)
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reductionBuffer[blockIdx.x] = sPartials[0];//this->postProcess(sPartials[0],len,extraParams);
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__threadfence();
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__syncthreads();
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if (threadIdx.x == 0) {
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unsigned int ticket = atomicInc(&tc[16384], gridDim.x);
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amLast = (ticket == gridDim.x - 1);
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}
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__syncthreads();
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if (amLast) {
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tc[16384] = 0;
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sPartials[threadIdx.x] = OpType::startingValue(x);
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for (int i = threadIdx.x; i < gridDim.x; i += blockDim.x)
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sPartials[threadIdx.x] = OpType::update(sPartials[threadIdx.x], reductionBuffer[i], extraParams);
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__syncthreads();
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aggregatePartials<OpType>(sPartials, threadIdx.x, sd::math::nd4j_min<int>(gridDim.x, blockDim.x), extraParams);
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__syncthreads();
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if (threadIdx.x == 0) {
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z[0] = OpType::postProcess(sPartials[0], len, extraParams);
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}
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}
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}
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else {
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if (threadIdx.x == 0) {
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unsigned int *tc = (unsigned *)reductionBuffer;
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tc[16384] = 0;
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z[0] = OpType::postProcess(sPartials[0], len, extraParams);
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}
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}
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}
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////////////////////////////////////////////////////////////////////////
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template <typename X, typename Z>
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template<typename OpType>
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__host__ void ReduceFloatFunction<X,Z>::intermediateXD(dim3 launchDims, cudaStream_t *stream, void *x, Nd4jLong *xShape, Nd4jLong *hXShapeInfo, void *extraParams, void *z, Nd4jLong *zShape, Nd4jLong *hZShapeInfo, int *dimension, int dimensionLength, void *reductionPointer, Nd4jLong *tadShapeInfo, Nd4jLong *tadOffsets) {
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if(shape::isEmpty(hXShapeInfo)) {
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if(shape::isEmpty(hZShapeInfo))
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return;
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const auto startingVal = std::is_same<OpType, simdOps::Mean<X,Z>>::value ? sd::DataTypeUtils::nanOrZero<Z>() : static_cast<Z>(OpType::startingValue(reinterpret_cast<X*>(x)));
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auto res = cudaMemcpyAsync(sd::LaunchContext::defaultContext()->getScalarPointer(), &startingVal, sizeof(Z), cudaMemcpyHostToDevice, *stream);
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if (res != 0)
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throw sd::cuda_exception::build("ReduceFloatFunction<X,Z>::intermediateXD: failed to copy temporary scalar", res);
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auto ptr = sd::LaunchContext::defaultContext()->getScalarPointer();
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// scalar assign
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functions::scalar::ScalarTransform<Z, Z, Z>::executeCudaShaped(launchDims, stream, 14, z, zShape, hZShapeInfo, z, zShape, hZShapeInfo, ptr, nullptr);
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}
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else {
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simpleReduce<X, Z, OpType><<<launchDims.x, launchDims.y, launchDims.z, *stream>>>(x, xShape, extraParams, z, zShape, dimension, dimensionLength, reductionPointer, tadShapeInfo, tadOffsets);
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}
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}
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////////////////////////////////////////////////////////////////////////
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template <typename X, typename Z>
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template<typename OpType>
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__host__ void ReduceFloatFunction<X,Z>::intermediateScalar(dim3 launchDims, cudaStream_t *stream, void *x, Nd4jLong *xShapeInfo, Nd4jLong *hXShapeInfo, void *extraParams, void *z, Nd4jLong *zShapeInfo, Nd4jLong *hZShapeInfo, int *dimension, int dimensionLength, void *reductionBuffer, Nd4jLong *tadOnlyShapeInfo) {
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if (shape::isEmpty(hXShapeInfo)) {
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if (shape::isEmpty(hZShapeInfo))
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return;
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const auto startingVal = std::is_same<OpType, simdOps::Mean<X,Z>>::value ? sd::DataTypeUtils::nanOrZero<Z>() : static_cast<Z>(OpType::startingValue(reinterpret_cast<X*>(x)));
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auto res = cudaMemcpyAsync(z, &startingVal, sizeof(Z), cudaMemcpyHostToDevice, *stream);
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if (res != 0)
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throw sd::cuda_exception::build("ReduceFloatFunction<X,Z>::intermediateScalar: failed to copy resulting scalar", res);
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}
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else {
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simpleScalar<X, Z, OpType> << < launchDims.x, launchDims.y, launchDims.z, *stream>>>(x, xShapeInfo, extraParams, z, zShapeInfo, dimension, dimensionLength, reductionBuffer, tadOnlyShapeInfo);
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}
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}
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////////////////////////////////////////////////////////////////////////
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template <typename X, typename Y>
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_CUDA_H void ReduceFloatFunction<X,Y>::execReduceScalar(dim3 launchDims, cudaStream_t *stream, int opNum, void *x, Nd4jLong *xShapeInfo, Nd4jLong *hXShapeInfo, void *extraParams, void *z, Nd4jLong *zShapeInfo, Nd4jLong *hZShapeInfo, int *dimension, int dimensionLength, void *reductionBuffer, Nd4jLong *tadOnlyShapeInfo) {
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DISPATCH_BY_OPNUM_TT(intermediateScalar, PARAMS(launchDims, stream, x, xShapeInfo, hXShapeInfo, extraParams, z, zShapeInfo, hZShapeInfo, dimension, dimensionLength, reductionBuffer, tadOnlyShapeInfo), OPS_A(REDUCE_FLOAT_OPS));
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sd::DebugHelper::checkErrorCode(stream, "execReduceScalarFloat(...) failed");
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}
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////////////////////////////////////////////////////////////////////////
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template <typename X, typename Y>
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_CUDA_H void ReduceFloatFunction<X,Y>::execReduceXD(dim3 launchDims, cudaStream_t *stream, int opNum, int rank, void *x, Nd4jLong *xShape, Nd4jLong *hXShapeInfo, void *extraParams, void *z, Nd4jLong *zShape, Nd4jLong *hZShapeInfo, int *dimension, int dimensionLength, void *reductionPointer, Nd4jLong *tadShapeInfo, Nd4jLong *tadOffsets) {
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DISPATCH_BY_OPNUM_TT(intermediateXD, PARAMS(launchDims, stream, x, xShape, hXShapeInfo, extraParams, z, zShape, hZShapeInfo, dimension, dimensionLength, reductionPointer, tadShapeInfo, tadOffsets), OPS_A(REDUCE_FLOAT_OPS));
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DEBUG_KERNEL(stream, opNum);
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}
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////////////////////////////////////////////////////////////////////////
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template <typename X>
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__device__ void initializeShared(X *extraParams, X **sPartials, int sMemSize) {
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int sPartialsLength = sMemSize / sizeof(X);
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X *sPartialsDeref = (X *) *sPartials;
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for (int i = 0; i < sPartialsLength; i++)
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sPartialsDeref[i] = extraParams[0];
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}
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//BUILD_DOUBLE_TEMPLATE(template class ND4J_EXPORT ReduceFloatFunction, , LIBND4J_TYPES, FLOAT_TYPES);
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}
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}
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