86 lines
3.3 KiB
Plaintext
86 lines
3.3 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 Yurii Shyrma (iuriish@yahoo.com), created on 26.04.2019
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//
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#include<ops/declarable/helpers/zeta.h>
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namespace nd4j {
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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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__global__ static void zetaCuda(const void *vx, const Nd4jLong *xShapeInfo,
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const void *vq, const Nd4jLong *qShapeInfo,
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void *vz, const Nd4jLong *zShapeInfo) {
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const auto x = reinterpret_cast<const T*>(vx);
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const auto q = reinterpret_cast<const T*>(vq);
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auto z = reinterpret_cast<T*>(vz);
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__shared__ Nd4jLong len;
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if (threadIdx.x == 0)
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len = shape::length(xShapeInfo);
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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 (int i = tid; i < len; i += totalThreads) {
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const auto xOffset = shape::getIndexOffset(i, xShapeInfo);
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const auto qOffset = shape::getIndexOffset(i, qShapeInfo);
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const auto zOffset = shape::getIndexOffset(i, zShapeInfo);
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z[zOffset] = zetaScalar<T>(x[xOffset], q[qOffset]);
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}
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}
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///////////////////////////////////////////////////////////////////
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template<typename T>
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static void zetaCudaLauncher(const int blocksPerGrid, const int threadsPerBlock, const cudaStream_t *stream, const void *vx, const Nd4jLong *xShapeInfo, const void *vq, const Nd4jLong *qShapeInfo, void *vz, const Nd4jLong *zShapeInfo) {
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zetaCuda<T><<<blocksPerGrid, threadsPerBlock, 1024, *stream>>>(vx, xShapeInfo, vq, qShapeInfo, vz, zShapeInfo);
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}
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void zeta(nd4j::LaunchContext * context, const NDArray& x, const NDArray& q, NDArray& z) {
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if(!x.isActualOnDeviceSide()) x.syncToDevice();
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if(!q.isActualOnDeviceSide()) q.syncToDevice();
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int threadsPerBlock = MAX_NUM_THREADS / 2;
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int blocksPerGrid = (z.lengthOf() + threadsPerBlock - 1) / threadsPerBlock;
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BUILD_SINGLE_SELECTOR(x.dataType(), zetaCudaLauncher, (blocksPerGrid, threadsPerBlock, context->getCudaStream(), x.getSpecialBuffer(), x.getSpecialShapeInfo(), q.getSpecialBuffer(), q.getSpecialShapeInfo(), z.getSpecialBuffer(), z.getSpecialShapeInfo()), FLOAT_TYPES);
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x.tickReadHost();
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q.tickReadHost();
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z.tickWriteDevice();
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}
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BUILD_SINGLE_TEMPLATE(template void zetaCudaLauncher, (const int blocksPerGrid, const int threadsPerBlock, const cudaStream_t *stream, const void *vx, const Nd4jLong *xShapeInfo, const void *vq, const Nd4jLong *qShapeInfo, void *vz, const Nd4jLong *zShapeInfo), FLOAT_TYPES);
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}
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}
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}
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