wehub-resource-sync
107 lines
3.0 KiB
Plaintext
107 lines
3.0 KiB
Plaintext
/* ******************************************************************************
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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,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See
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* the 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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// @author Yurii Shyrma, created on 27.11.2018
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//
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#include <loops/special_kernels.h>
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#include <ops/declarable/helpers/flatten.h>
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namespace sd {
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template <typename T>
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SD_KERNEL void flattenKernel(
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Pointer* extraPointers,
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int dOffset,
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char order,
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void* vz,
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LongType* zShapeInfo,
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void* vy,
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LongType* yShapeInfo) {
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auto z = reinterpret_cast<T*>(vz);
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auto y = reinterpret_cast<T*>(vy);
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__shared__ sd::LongType yLen;
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__shared__ int yRank;
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__shared__ const sd::LongType* yShapePtr;
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__shared__ const sd::LongType* yStridePtr;
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if (threadIdx.x == 0) {
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yLen = shape::length(yShapeInfo);
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yRank = shape::rank(yShapeInfo);
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yShapePtr = shape::shapeOf(yShapeInfo);
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yStridePtr = shape::stride(yShapeInfo);
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}
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__syncthreads();
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const auto tid = blockIdx.x * blockDim.x + threadIdx.x;
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const auto totalThreads = gridDim.x * blockDim.x;
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for (auto i = tid; i < yLen; i += totalThreads) {
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sd::LongType coords[SD_MAX_RANK];
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sd::LongType yOffset;
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INDEX2COORDS(i, yRank, yShapePtr, coords);
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COORDS2INDEX(yRank, yStridePtr, coords, yOffset);
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z[i + dOffset] = y[yOffset];
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}
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}
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template <typename T>
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SD_HOST void flattenKernelGeneric(
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dim3& launchDims,
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cudaStream_t* stream,
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Pointer* extraPointers,
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int dOffset,
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char order,
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void* vz,
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LongType* zShapeInfo,
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void* vy,
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LongType* yShapeInfo) {
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flattenKernel<T>
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<<<launchDims.x, launchDims.y, launchDims.z, *stream>>>(
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extraPointers,
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dOffset,
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order,
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vz,
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zShapeInfo,
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vy,
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yShapeInfo);
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DebugHelper::checkErrorCode(stream, "flattenGeneric(...) failed");
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}
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BUILD_SINGLE_TEMPLATE(
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void flattenKernelGeneric,
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(dim3 & launchDims,
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cudaStream_t* stream,
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sd::Pointer* extraPointers,
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int dOffset,
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char order,
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void* vz,
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sd::LongType* zShapeInfo,
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void* vy,
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sd::LongType* yShapeInfo),
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SD_COMMON_TYPES);
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} // namespace sd
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