1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
|
// Copyright 2014 BVLC and contributors.
#include <vector>
#include "caffe/blob.hpp"
#include "caffe/common.hpp"
#include "caffe/filler.hpp"
#include "caffe/layer.hpp"
#include "caffe/vision_layers.hpp"
#include "caffe/util/math_functions.hpp"
namespace caffe {
template <typename Dtype>
Dtype InnerProductLayer<Dtype>::Forward_gpu(const vector<Blob<Dtype>*>& bottom,
vector<Blob<Dtype>*>* top) {
const Dtype* bottom_data = bottom[0]->gpu_data();
Dtype* top_data = (*top)[0]->mutable_gpu_data();
const Dtype* weight = this->blobs_[0]->gpu_data();
caffe_gpu_gemm<Dtype>(CblasNoTrans, CblasTrans, M_, N_, K_, (Dtype)1.,
bottom_data, weight, (Dtype)0., top_data);
if (bias_term_) {
caffe_gpu_gemm<Dtype>(CblasNoTrans, CblasNoTrans, M_, N_, 1, (Dtype)1.,
bias_multiplier_->gpu_data(),
this->blobs_[1]->gpu_data(), (Dtype)1., top_data);
}
return Dtype(0);
}
template <typename Dtype>
void InnerProductLayer<Dtype>::Backward_gpu(const vector<Blob<Dtype>*>& top,
const vector<bool>& propagate_down,
vector<Blob<Dtype>*>* bottom) {
if (this->param_propagate_down_[0]) {
const Dtype* top_diff = top[0]->gpu_diff();
const Dtype* bottom_data = (*bottom)[0]->gpu_data();
// Gradient with respect to weight
caffe_gpu_gemm<Dtype>(CblasTrans, CblasNoTrans, N_, K_, M_, (Dtype)1.,
top_diff, bottom_data, (Dtype)0., this->blobs_[0]->mutable_gpu_diff());
}
if (bias_term_ && this->param_propagate_down_[1]) {
const Dtype* top_diff = top[0]->gpu_diff();
// Gradient with respect to bias
caffe_gpu_gemv<Dtype>(CblasTrans, M_, N_, (Dtype)1., top_diff,
bias_multiplier_->gpu_data(), (Dtype)0.,
this->blobs_[1]->mutable_gpu_diff());
}
if (propagate_down[0]) {
const Dtype* top_diff = top[0]->gpu_diff();
// Gradient with respect to bottom data
caffe_gpu_gemm<Dtype>(CblasNoTrans, CblasNoTrans, M_, K_, N_, (Dtype)1.,
top_diff, this->blobs_[0]->gpu_data(), (Dtype)0.,
(*bottom)[0]->mutable_gpu_diff());
}
}
INSTANTIATE_CLASS(InnerProductLayer);
} // namespace caffe
|