wehub-resource-sync
91 lines
2.5 KiB
Plaintext
91 lines
2.5 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 15.11.2018
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//
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#include <loops/special_kernels.h>
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namespace sd {
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template <typename T>
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SD_KERNEL void execFillIsMax(
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void* vdZ,
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const LongType* xShapeInfo,
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LongType length,
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long idx) {
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auto dz = reinterpret_cast<T*>(vdZ);
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__shared__ int rank;
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__shared__ const sd::LongType* shapePtr;
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__shared__ const sd::LongType* stridePtr;
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if (threadIdx.x == 0) {
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rank = shape::rank(xShapeInfo);
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shapePtr = shape::shapeOf(xShapeInfo);
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stridePtr = shape::stride(xShapeInfo);
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}
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__syncthreads();
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const int tid = blockIdx.x * blockDim.x + threadIdx.x;
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const int totalThreads = blockDim.x * gridDim.x;
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for (LongType i = tid; i < length; i += totalThreads) {
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sd::LongType coords[SD_MAX_RANK];
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sd::LongType offset;
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INDEX2COORDS(i, rank, shapePtr, coords);
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COORDS2INDEX(rank, stridePtr, coords, offset);
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dz[offset] = (i == idx ? static_cast<T>(1) : static_cast<T>(0));
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}
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}
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template <typename T>
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SD_HOST void fillIsMaxGeneric(
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dim3 &launchDims,
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cudaStream_t *stream,
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void* dz,
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const LongType* zShapeInfo,
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LongType length,
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long idx) {
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execFillIsMax<T>
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<<<launchDims.x, launchDims.y, launchDims.z, *stream>>>(
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dz,
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zShapeInfo,
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length,
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idx);
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DebugHelper::checkErrorCode(stream, "fillIsMax(...) failed");
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}
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BUILD_SINGLE_TEMPLATE(
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template void fillIsMaxGeneric,
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(dim3 & launchDims,
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cudaStream_t *stream,
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void *dz,
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const sd::LongType *zShapeInfo,
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sd::LongType length,
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long idx),
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SD_COMMON_TYPES);
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} // namespace sd
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