259 lines
8.6 KiB
C++
259 lines
8.6 KiB
C++
/*
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* ******************************************************************************
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* *
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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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* * See the NOTICE file distributed with this work for additional
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* * information regarding copyright ownership.
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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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//
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// @author Yurii Shyrma (iuriish@yahoo.com), created on 20.04.2018
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// @author Oleh Semeniv (oleg.semeniv@gmail.com)
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//
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#include <helpers/Loops.h>
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#include <ops/declarable/helpers/transforms.h>
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#if NOT_EXCLUDED(OP_merge)
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namespace sd {
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namespace ops {
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namespace helpers {
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//////////////////////////////////////////////////////////////////////////
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template <typename X, typename Z>
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static void mergeMaxIndex_(const std::vector<NDArray*>& inArrs, NDArray& output) {
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const sd::LongType numArgs = inArrs.size();
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auto x = inArrs[0];
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auto func = PRAGMA_THREADS_FOR {
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for (auto e = start; e < stop; e++) {
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X max = -DataTypeUtils::max<X>();
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Z idx = static_cast<Z>(0);
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for (sd::LongType i = 0; i < numArgs; i++) {
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X v = inArrs[i]->t<X>(e);
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if (v > max) {
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max = v;
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idx = static_cast<Z>(i);
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}
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}
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output.r<Z>(e) = static_cast<Z>(idx);
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}
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};
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samediff::Threads::parallel_for(func, 0, x->lengthOf());
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}
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void mergeMaxIndex(sd::LaunchContext* context, const std::vector<NDArray*>& inArrs, NDArray& output) {
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BUILD_DOUBLE_SELECTOR(inArrs[0]->dataType(), output.dataType(), mergeMaxIndex_, (inArrs, output), SD_NUMERIC_TYPES,
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SD_INDEXING_TYPES);
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}
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//////////////////////////////////////////////////////////////////////////
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template <typename T>
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static void mergeMax_(const std::vector<NDArray*>& inArrs, NDArray& output) {
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const sd::LongType numArgs = inArrs.size();
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auto x = inArrs[0];
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auto func = PRAGMA_THREADS_FOR {
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for (auto e = start; e < stop; e++) {
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T max = -DataTypeUtils::max<T>();
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for (sd::LongType i = 0; i < numArgs; i++) {
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T v = inArrs[i]->e<T>(e);
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if (v > max) max = v;
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}
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output.p(e, max);
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}
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};
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samediff::Threads::parallel_for(func, 0, x->lengthOf());
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}
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void mergeMax(sd::LaunchContext* context, const std::vector<NDArray*>& inArrs, NDArray& output) {
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BUILD_SINGLE_SELECTOR(output.dataType(), mergeMax_, (inArrs, output), SD_NUMERIC_TYPES);
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}
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//////////////////////////////////////////////////////////////////////////
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template <typename T>
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static void mergeMaxBp_(const std::vector<NDArray*>& inArrs, std::vector<NDArray*>& outArrs) {
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// outArrs.size() == inArrs.size() - 1
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const sd::LongType numArgs = outArrs.size();
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// last array is gradient
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const auto gradient = inArrs[numArgs]->bufferAsT<T>();
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auto length = inArrs[numArgs]->lengthOf();
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auto gradShape = inArrs[numArgs]->shapeInfo();
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std::vector<bool> vbSameShaepeAndStrides(numArgs);
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std::vector<sd::LongType*> vShapePtrs(numArgs);
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std::vector<sd::LongType*> vStridePtrs(numArgs);
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std::vector<sd::LongType> vRanks(numArgs);
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for (int i = 0; i < numArgs; ++i) {
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vbSameShaepeAndStrides[i] = shape::haveSameShapeAndStrides(gradShape, inArrs[i]->shapeInfo());
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vShapePtrs[i] = shape::shapeOf(inArrs[i]->shapeInfo());
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vStridePtrs[i] = shape::stride(inArrs[i]->shapeInfo());
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vRanks[i] = shape::rank(inArrs[i]->shapeInfo());
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}
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std::vector<sd::LongType *> outShapePtrs(numArgs);
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std::vector<sd::LongType *> outStridePtrs(numArgs);
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std::vector<sd::LongType> outRanks(numArgs);
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for (int i = 0; i < numArgs; ++i) {
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outShapePtrs[i] = shape::shapeOf(outArrs[i]->shapeInfo());
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outStridePtrs[i] = shape::stride(outArrs[i]->shapeInfo());
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outRanks[i] = shape::rank(outArrs[i]->shapeInfo());
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}
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sd::LongType gradRank = shape::rank(gradShape);
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sd::LongType *gradShapeOf = shape::shapeOf(gradShape);
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sd::LongType *gradStride = shape::stride(gradShape);
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auto func = PRAGMA_THREADS_FOR {
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sd::LongType coords[SD_MAX_RANK];
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for (auto e = start; e < stop; e++) {
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INDEX2COORDS(e, gradRank, gradShapeOf, coords);
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sd::LongType gradOffset;
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COORDS2INDEX(gradRank,gradStride, coords, gradOffset);
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T max = -DataTypeUtils::max<T>();
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sd::LongType nMaxIndex = 0;
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for (sd::LongType i = 0; i < numArgs; i++) {
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sd::LongType xOffset;
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if (vbSameShaepeAndStrides[i]) {
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xOffset = gradOffset;
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} else {
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COORDS2INDEX(vRanks[i],vStridePtrs[i], coords, xOffset);
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}
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const T* v = inArrs[i]->bufferAsT<T>();
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if (v[xOffset] > max) {
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max = v[xOffset];
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nMaxIndex = i;
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}
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}
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sd::LongType zOffset;
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if (vbSameShaepeAndStrides[nMaxIndex]) {
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zOffset = gradOffset;
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} else {
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COORDS2INDEX(outRanks[nMaxIndex],outStridePtrs[nMaxIndex], coords, zOffset);
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}
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T* z = outArrs[nMaxIndex]->bufferAsT<T>();
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z[zOffset] = gradient[gradOffset];
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}
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};
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samediff::Threads::parallel_for(func, 0, length);
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return;
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}
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void mergeMaxBp(sd::LaunchContext* context, const std::vector<NDArray*>& inArrs, std::vector<NDArray*>& outArrs) {
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BUILD_SINGLE_SELECTOR(outArrs[0]->dataType(), mergeMaxBp_, (inArrs, outArrs), SD_NUMERIC_TYPES);
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}
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//////////////////////////////////////////////////////////////////////////
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template <typename T>
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static void mergeAvg_(const std::vector<NDArray*>& inArrs, NDArray& output) {
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const sd::LongType numArgs = inArrs.size();
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const T factor = static_cast<T>(1.f / numArgs);
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auto x = inArrs[0];
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auto func = PRAGMA_THREADS_FOR {
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for (auto e = start; e < stop; e++) {
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T sum = static_cast<T>(0);
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for (sd::LongType i = 0; i < numArgs; i++) {
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T v = inArrs[i]->e<T>(e);
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sum += v;
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}
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output.p<T>(e, sum * factor);
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}
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};
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samediff::Threads::parallel_for(func, 0, x->lengthOf());
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}
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void mergeAvg(sd::LaunchContext* context, const std::vector<NDArray*>& inArrs, NDArray& output) {
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BUILD_SINGLE_SELECTOR(output.dataType(), mergeAvg_, (inArrs, output), SD_NUMERIC_TYPES);
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}
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//////////////////////////////////////////////////////////////////////////
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template <typename T>
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static void mergeAvgBp_(NDArray& gradient, std::vector<NDArray*>& outArrs) {
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const sd::LongType numArgs = outArrs.size();
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auto func = PRAGMA_THREADS_FOR {
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for (auto e = start; e < stop; e++) {
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T v = gradient.e<T>(e) / numArgs;
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for (sd::LongType i = 0; i < numArgs; i++) {
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outArrs[i]->p<T>(e, v);
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}
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}
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};
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samediff::Threads::parallel_for(func, 0, gradient.lengthOf());
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}
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void mergeAvgBp(sd::LaunchContext* context, NDArray& gradient, std::vector<NDArray*>& outArrs) {
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BUILD_SINGLE_SELECTOR(gradient.dataType(), mergeAvgBp_, (gradient, outArrs), SD_NUMERIC_TYPES);
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}
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//////////////////////////////////////////////////////////////////////////
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template <typename T>
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static void mergeAdd_(const std::vector<NDArray*>& inArrs, NDArray& output) {
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const sd::LongType numArgs = inArrs.size();
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auto x = inArrs[0];
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auto func = PRAGMA_THREADS_FOR {
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for (auto e = start; e < stop; e++) {
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T sum = (T)0.f;
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for (sd::LongType i = 0; i < numArgs; i++) sum += inArrs[i]->e<T>(e);
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output.p(e, sum);
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}
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};
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samediff::Threads::parallel_for(func, 0, x->lengthOf());
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}
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void mergeAdd(sd::LaunchContext* context, const std::vector<NDArray*>& inArrs, NDArray& output) {
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BUILD_SINGLE_SELECTOR(output.dataType(), mergeAdd_, (inArrs, output), SD_NUMERIC_TYPES);
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}
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//////////////////////////////////////////////////////////////////////////
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template <typename T>
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static void mergeAddBp_(NDArray& gradient, std::vector<NDArray*>& outArrs) {
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const sd::LongType numArgs = outArrs.size();
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auto func = PRAGMA_THREADS_FOR {
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for (auto e = start; e < stop; e++) {
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T v = gradient.e<T>(e);
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for (sd::LongType i = 0; i < numArgs; i++) {
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outArrs[i]->p<T>(e, v);
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}
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}
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};
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samediff::Threads::parallel_for(func, 0, gradient.lengthOf());
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}
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void mergeAddBp(sd::LaunchContext* context, NDArray& gradient, std::vector<NDArray*>& outArrs) {
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BUILD_SINGLE_SELECTOR(gradient.dataType(), mergeAddBp_, (gradient, outArrs), SD_NUMERIC_TYPES);
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}
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} // namespace helpers
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} // namespace ops
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} // namespace sd
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#endif |