wehub-resource-sync
107 lines
3.4 KiB
C++
107 lines
3.4 KiB
C++
/* ******************************************************************************
|
|
*
|
|
*
|
|
* This program and the accompanying materials are made available under the
|
|
* terms of the Apache License, Version 2.0 which is available at
|
|
* https://www.apache.org/licenses/LICENSE-2.0.
|
|
*
|
|
* See the NOTICE file distributed with this work for additional
|
|
* information regarding copyright ownership.
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
|
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
|
* License for the specific language governing permissions and limitations
|
|
* under the License.
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
******************************************************************************/
|
|
|
|
//
|
|
// @author raver119@gmail.com, created on 29/10/17
|
|
// @author Yurii Shyrma (iuriish@yahoo.com)
|
|
//
|
|
|
|
#include <system/op_boilerplate.h>
|
|
#if NOT_EXCLUDED(OP_softmax)
|
|
|
|
#include <ops/declarable/CustomOperations.h>
|
|
#include <ops/declarable/helpers/activations.h>
|
|
|
|
namespace sd {
|
|
namespace ops {
|
|
|
|
DECLARE_TYPES(softmax) {
|
|
getOpDescriptor()->setAllowedInputTypes({ALL_FLOATS})->setAllowedOutputTypes({ALL_FLOATS})->setSameMode(true);
|
|
}
|
|
|
|
CONFIGURABLE_OP_IMPL(softmax, 1, 1, true, 0, 0) {
|
|
auto input = INPUT_VARIABLE(0);
|
|
auto output = OUTPUT_VARIABLE(0);
|
|
|
|
const int rank = input->rankOf();
|
|
const int dim = block.getIArguments()->size() > 0 ? INT_ARG(0) : rank - 1;
|
|
|
|
REQUIRE_TRUE(dim < rank, 0,
|
|
"SOFTMAX OP: the value of input integer parameter (dimension) must be less than input array rank %i, "
|
|
"but got dimension = %i instead !",
|
|
rank, dim);
|
|
|
|
helpers::softmax(block.launchContext(), input, output, dim);
|
|
|
|
return sd::Status::OK;
|
|
}
|
|
|
|
CONFIGURABLE_OP_IMPL(softmax_bp, 3, 1, true, 0, 0) {
|
|
auto input = INPUT_VARIABLE(0);
|
|
auto gradO = INPUT_VARIABLE(1);
|
|
auto softmaxedOut = INPUT_VARIABLE(2);
|
|
auto gradI = OUTPUT_VARIABLE(0);
|
|
|
|
const int rank = input->rankOf();
|
|
const int dim = block.getIArguments()->size() > 0 ? INT_ARG(0) : rank - 1;
|
|
|
|
REQUIRE_TRUE(dim < rank, 0,
|
|
"SOFTMAX_BP OP: the value of input integer parameter (dimension) must be less than input array rank %i, "
|
|
"but got dimension = %i instead !",
|
|
rank, dim);
|
|
|
|
// Refactored to minimize temporary allocations and ensure proper cleanup
|
|
gradI->assign(softmaxedOut);
|
|
|
|
// Perform operations with proper pointer management
|
|
std::vector<sd::LongType> dimVector = {dim};
|
|
|
|
// Compute gradI * gradO - returns pointer
|
|
auto* temp = (*gradI) * (*gradO);
|
|
|
|
// Reduce along dimension - returns pointer
|
|
auto* sumAlongDim = temp->reduceAlongDimension(reduce::Sum, &dimVector, true);
|
|
delete temp;
|
|
|
|
// Compute gradO - sumAlongDim - returns pointer
|
|
auto* diff = (*gradO) - (*sumAlongDim);
|
|
// FIXED: Add defensive check - reduceAlongDimension may return view
|
|
if (sumAlongDim != nullptr && !sumAlongDim->isView()) {
|
|
delete sumAlongDim;
|
|
}
|
|
|
|
// Compute final result: gradI * diff - returns pointer
|
|
auto* result = (*gradI) * (*diff);
|
|
delete diff;
|
|
|
|
// Assign result to output
|
|
gradI->assign(result);
|
|
delete result;
|
|
|
|
return sd::Status::OK;
|
|
}
|
|
|
|
DECLARE_TYPES(softmax_bp) {
|
|
getOpDescriptor()->setAllowedInputTypes({ALL_FLOATS})->setAllowedOutputTypes({ALL_FLOATS});
|
|
}
|
|
|
|
} // namespace ops
|
|
} // namespace sd
|
|
|
|
#endif
|