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Use a CUDAGuard when running Torch models #340

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Use a CUDAGuard when running Torch models #340

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14 changes: 14 additions & 0 deletions source/neuropod/backends/torchscript/torch_backend.cc
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Original file line number Diff line number Diff line change
@@ -7,6 +7,10 @@
#include "neuropod/backends/torchscript/type_utils.hh"
#include "neuropod/internal/tensor_types.hh"

#ifndef __APPLE__
#include <c10/cuda/CUDAGuard.h>
#endif

#include <caffe2/core/macros.h>

#include <iostream>
@@ -291,6 +295,16 @@ std::unique_ptr<NeuropodValueMap> TorchNeuropodBackend::infer_internal(const Neu
{
torch::NoGradGuard guard;

#ifndef __APPLE__
// Make sure we're running on the correct device
std::unique_ptr<at::cuda::CUDAGuard> device_guard;
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#include <memory>

const auto model_device = get_torch_device(DeviceType::GPU);
if (model_device.is_cuda())
{
device_guard = stdx::make_unique<at::cuda::CUDAGuard>(model_device);
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I guess we can use std:: here not stdx:: because Neuropod became C++14 recently, right?

}
#endif

// Get inference schema
const auto &method = model_->get_method("forward");
const auto &schema = SCHEMA(method);