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#include <ATen/record_function.h>
#include <torch/csrc/distributed/autograd/autograd.h>
namespace torch {
namespace distributed {
namespace autograd {
constexpr auto kDistAutogradBackwardProfilingKey =
"torch::distributed::autograd::backward";
void backward(
int64_t context_id,
const variable_list& roots,
bool retain_graph) {
C10_LOG_API_USAGE_ONCE("torch.distributed.autograd.backward");
RECORD_FUNCTION(
kDistAutogradBackwardProfilingKey, std::vector<c10::IValue>());
try {
DistEngine::getInstance().execute(context_id, roots, retain_graph);
} catch (std::exception& e) {
// FIXME: crashes if exception type is not RuntimeError
TORCH_CHECK(false, e.what());
}
}
} // namespace autograd
} // namespace distributed
} // namespace torch
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