62 lines
2.0 KiB
C++
62 lines
2.0 KiB
C++
/*******************************************************************************
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* Copyright (c) 2019-2020 Konduit K.K.
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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 Oleh Semeniv (oleg.semeniv@gmail.com)
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//
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#include <ops/declarable/headers/updaters.h>
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#include <ops/declarable/CustomOperations.h>
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#include <helpers/ConstantTadHelper.h>
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#include <execution/Threads.h>
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#include <array/NDArray.h>
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namespace sd {
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namespace ops {
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CONFIGURABLE_OP_IMPL(sgd_updater, 1, 1, true, 0, 0) {
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const auto input = INPUT_VARIABLE(0);
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auto output = OUTPUT_VARIABLE(0);
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if (input->isEmpty())
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return Status::OK();
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bool bLearningRate = 2 == block.width() || 1 == block.getTArguments()->size();
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REQUIRE_TRUE(bLearningRate, 0, "SGD UPDATER OP: Learning rate was not provided!");
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if (block.width() > 1) {
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const auto lr = INPUT_VARIABLE(1);
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REQUIRE_TRUE(lr->isScalar(), 0, "SGD UPDATER OP: Learning rate has to be a scalar, but instead got rank %i!", lr->rankOf());
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input->applyScalarArr(scalar::Multiply, *lr, *output);
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}
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else {
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input->applyScalar(scalar::Multiply, T_ARG(0), *output);
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}
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return Status::OK();
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}
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DECLARE_TYPES(sgd_updater) {
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getOpDescriptor()->setAllowedInputTypes({ ALL_FLOATS })
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->setSameMode(true);
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}
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}
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}
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