mirror of https://github.com/alibaba/MNN.git
50 lines
1.6 KiB
Plaintext
Executable File
50 lines
1.6 KiB
Plaintext
Executable File
//
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// MetalSigmoid.mm
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// MNN
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//
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// Created by MNN on 2019/01/30.
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// Copyright © 2018, Alibaba Group Holding Limited
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//
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#import "backend/metal/MetalSigmoid.hpp"
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#import "backend/metal/MNNMetalContext.h"
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#import "core/Macro.h"
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#import "backend/metal/MetalBackend.hpp"
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#if MNN_METAL_ENABLED
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namespace MNN {
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MetalSigmoid::MetalSigmoid(Backend *backend) : Execution(backend) {
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// nothing to do
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}
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ErrorCode MetalSigmoid::onExecute(const std::vector<Tensor *> &inputs, const std::vector<Tensor *> &outputs) {
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auto backend = static_cast<MetalBackend *>(this->backend());
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auto context = (__bridge MNNMetalContext *)backend->context();
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auto input = inputs[0], output = outputs[0];
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NSUInteger size = output->elementSize();
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auto simd = size % 4 == 0;
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if (simd) {
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size /= 4;
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}
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auto encoder = [context encoder];
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auto bandwidth = [context load:simd ? @"sigmoid_x4" : @"sigmoid_x1" encoder:encoder];
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[encoder setBuffer:(__bridge id<MTLBuffer>)(void *)input->deviceId() offset:0 atIndex:0];
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[encoder setBuffer:(__bridge id<MTLBuffer>)(void *)output->deviceId() offset:0 atIndex:1];
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[context dispatchEncoder:encoder threads:{ size, 1, 1 } bandwidth:bandwidth];
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[encoder endEncoding];
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MNN_PRINT_ENCODER(context, encoder);
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return NO_ERROR;
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}
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class MetalSigmoidCreator : public MetalBackend::Creator {
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public:
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virtual Execution *onCreate(const std::vector<Tensor *> &inputs, const MNN::Op *op, Backend *backend) const {
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return new MetalSigmoid(backend);
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}
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};
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REGISTER_METAL_OP_CREATOR(MetalSigmoidCreator, OpType_Sigmoid);
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} // namespace MNN
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#endif /* MNN_METAL_ENABLED */
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