Esempio n. 1
0
std::tuple<at::Tensor,at::Tensor,at::Tensor> mkldnn_convolution_backward(
    const at::Tensor& input, const at::Tensor& grad_output_t, const at::Tensor& weight,
    IntList padding, IntList stride, IntList dilation, std::array<bool,3> output_mask)
{
  Tensor grad_output = grad_output_t.contiguous();

  Tensor grad_input, grad_weight, grad_bias;
  if (output_mask[0]) {
    grad_input = at::mkldnn_convolution_backward_input(
      input.sizes(), grad_output, weight, padding, stride, dilation, output_mask[2]);
  }
  if (output_mask[1] || output_mask[2]) {
    std::tie(grad_weight, grad_bias) = at::mkldnn_convolution_backward_weights(
      weight.sizes(), grad_output, input, padding, stride, dilation, output_mask[2]);
  }

  return std::tuple<Tensor, Tensor, Tensor>{grad_input, grad_weight, grad_bias};
}
Esempio n. 2
0
at::Tensor mkldnn_convolution(
    const at::Tensor& input, const at::Tensor& weight, const at::Tensor& bias,
    IntList padding, IntList stride, IntList dilation)
{
  auto output = input.type().tensor(conv_output_size(
    input.sizes(), weight.sizes(), padding, stride, dilation));

  auto cpu_engine = CpuEngine::Instance().get_engine();
  
  int32_t n = input.size(0);
  int32_t ic = input.size(1);
  int32_t ih = input.size(2);
  int32_t iw = input.size(3);

  int32_t oc = output.size(1);
  int32_t oh = output.size(2);
  int32_t ow = output.size(3);

  int32_t kh = weight.size(2);
  int32_t kw = weight.size(3);

  int32_t sh = stride[0];
  int32_t sw = stride[1];
  int32_t ph = padding[0];
  int32_t pw = padding[1];

  auto data_t = memory::data_type::f32;
  auto format_any = memory::format::any;
  auto format_nchw = memory::format::nchw;
  auto format_oihw = memory::format::oihw;
  auto format_x = memory::format::x;

  memory::dims input_tz = {n, ic, ih, iw};
  memory::dims weight_tz = {oc, ic, kh, kw};
  memory::dims bias_tz = {oc};
  memory::dims output_tz = {n, oc, oh, ow};
  memory::dims _stride = {sh, sw};
  memory::dims _padding = {ph, pw};

  auto input_md = memory::desc({input_tz}, data_t, format_any);
  auto weight_md = memory::desc({weight_tz}, data_t, format_any);
  auto bias_md = memory::desc({bias_tz}, data_t, format_any);
  auto output_md = memory::desc({output_tz}, data_t, format_any);

  std::shared_ptr<convolution_forward::desc> conv_forward_desc;
  if (bias.defined()) {
    conv_forward_desc.reset(new convolution_forward::desc(prop_kind::forward,
      convolution_direct, input_md, weight_md, bias_md, output_md,
      _stride, _padding, _padding, padding_kind::zero));
  } else {
    conv_forward_desc.reset(new convolution_forward::desc(prop_kind::forward,
      convolution_direct, input_md, weight_md, output_md,
      _stride, _padding, _padding, padding_kind::zero));
  }

  std::shared_ptr<convolution_forward::primitive_desc> conv_forward_pd;
  conv_forward_pd.reset(new convolution_forward::primitive_desc(
    *conv_forward_desc, cpu_engine));

  auto input_usr_memory = memory({{{input_tz}, data_t, format_nchw}, cpu_engine},
    input.data_ptr());
  auto weight_usr_memory = memory({{{weight_tz}, data_t,  format_oihw}, cpu_engine},
    weight.data_ptr());
  auto output_usr_memory = memory({{{output_tz}, data_t, format_nchw}, cpu_engine},
    output.data_ptr());

  std::vector<primitive> net;

  auto input_pd = conv_forward_pd->src_primitive_desc();
  auto input_memory = input_usr_memory;
  if (input_usr_memory.get_primitive_desc() != memory::primitive_desc(input_pd)) {
    input_memory = memory(input_pd);
    net.push_back(reorder(input_usr_memory, input_memory));
  }

  auto weight_pd = conv_forward_pd->weights_primitive_desc();
  auto weight_memory = weight_usr_memory;
  if (weight_usr_memory.get_primitive_desc() != memory::primitive_desc(weight_pd)) {
    weight_memory = memory(weight_pd);
    net.push_back(reorder(weight_usr_memory, weight_memory));
  }

  auto output_pd = conv_forward_pd->dst_primitive_desc();
  auto output_memory = output_usr_memory;
  if (output_usr_memory.get_primitive_desc() != memory::primitive_desc(output_pd)) {
    output_memory = memory(output_pd);
  }

  std::shared_ptr<convolution_forward> conv_forward;
  std::shared_ptr<memory> bias_usr_memory;
  if (bias.defined()) {
    bias_usr_memory.reset(new memory({{{bias_tz}, data_t, format_x}, cpu_engine},
      bias.data_ptr()));
    conv_forward.reset(new convolution_forward(*conv_forward_pd, input_memory,
      weight_memory, *bias_usr_memory, output_memory));
  } else {
    conv_forward.reset(new convolution_forward(*conv_forward_pd, input_memory,
      weight_memory, output_memory));
  }
  net.push_back(*conv_forward);

  if (output_memory != output_usr_memory) {
    net.push_back(reorder(output_memory, output_usr_memory));
  }

  Stream::Instance().get_stream().submit(net);

  return output;
}