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Add Cuda Guard for Forced Align Module #4115

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Add Cuda Guard for Forced Align Module #4115

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5 changes: 5 additions & 0 deletions src/libtorchaudio/forced_align/gpu/compute.cu
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Original file line number Diff line number Diff line change
@@ -1,6 +1,7 @@
#include <ATen/core/TensorAccessor.h>
#include <ATen/cuda/CUDAContext.h>
#include <c10/cuda/CUDAException.h>
#include <c10/cuda/CUDAGuard.h>
#include <limits.h>
#include <torch/torch.h>
#include <cub/cub.cuh>
Expand Down Expand Up @@ -115,6 +116,10 @@ void forced_align_impl(
const torch::Tensor& targets,
const int64_t blank,
torch::Tensor& paths) {

// only guard logProbs, since in L263 it'll be verified on targets
const at::cuda::OptionalCUDAGuard device_guard(logProbs.device());

auto defaultStream = at::cuda::getCurrentCUDAStream();
auto cpuDataTranferStream = at::cuda::getStreamFromPool();
const scalar_t kNegInfinity = -std::numeric_limits<scalar_t>::infinity();
Expand Down