wehub-resource-sync
75 lines
2.9 KiB
C++
75 lines
2.9 KiB
C++
/* ******************************************************************************
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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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// @author Yurii Shyrma (iuriish@yahoo.com), created on 20.04.2018
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//
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#include <helpers/Loops.h>
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#include <helpers/ShapeUtils.h>
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#include <ops/declarable/helpers/transforms.h>
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#if NOT_EXCLUDED(OP_tile)
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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 T>
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static void tileBP_(NDArray& gradO /*input*/, NDArray& gradI /*output*/, const std::vector<sd::LongType> reps) {
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T* gradIBuff = reinterpret_cast<T*>(gradI.buffer());
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auto gradOBuff = reinterpret_cast<T const*>(gradO.buffer());
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const sd::LongType gradILen = gradI.lengthOf();
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const sd::LongType gradOLen = gradO.lengthOf(); // gradOLen >= gradILen
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// initial zeroing of gradI content
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sd::ops::safe_zero(gradIBuff, static_cast<size_t>(gradILen));
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LongType gradOCoords[SD_MAX_RANK];
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LongType gradICoords[SD_MAX_RANK];
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LongType gradOOffset;
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LongType gradIOffset;
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sd::LongType gradORank = gradO.rankOf();
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sd::LongType *gradOShape = shape::shapeOf(gradO.shapeInfo());
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sd::LongType *gradOStride = shape::stride(gradO.shapeInfo());
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sd::LongType gradIRank = gradI.rankOf();
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sd::LongType *gradIShape = shape::shapeOf(gradI.shapeInfo());
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sd::LongType *gradIStride = shape::stride(gradI.shapeInfo());
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for (sd::LongType i = 0; i < gradOLen; ++i) {
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INDEX2COORDS(i,gradORank, gradOShape, gradOCoords);
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COORDS2INDEX(gradORank, gradOStride, gradOCoords, gradOOffset);
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INDEX2COORDS(i, gradIRank, gradIShape, gradICoords);
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COORDS2INDEX(gradIRank, gradIStride, gradICoords, gradIOffset);
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gradI.p(gradIOffset, gradI.e<T>(gradIOffset) + gradOBuff[gradOOffset]);
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}
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}
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void tileBP(LaunchContext* context, NDArray gradO /*input*/, NDArray& gradI /*output*/,
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const std::vector<LongType> reps) {
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BUILD_SINGLE_SELECTOR(gradI.dataType(), tileBP_, (gradO, gradI, reps), SD_FLOAT_TYPES);
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}
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BUILD_SINGLE_TEMPLATE( void tileBP_,
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(NDArray& gradO /*input*/, NDArray& gradI /*output*/, const std::vector<sd::LongType> reps),
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SD_FLOAT_TYPES);
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} // namespace helpers
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} // namespace ops
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} // namespace sd
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#endif |