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ac506f5820
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/15451 Original commit changeset: ccd050bfead6 Reviewed By: ilia-cher Differential Revision: D13533161 fbshipit-source-id: 1d0dcd54c2e3875aab015f3e996693e67a449b87
69 lines
2.1 KiB
C++
69 lines
2.1 KiB
C++
#ifndef CAFFE2_CORE_NET_DAG_UTILS_H_
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#define CAFFE2_CORE_NET_DAG_UTILS_H_
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#include <atomic>
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#include <climits>
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#include <cstddef>
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#include <thread> // NOLINT
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#include <typeinfo>
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#include <unordered_map>
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#include <unordered_set>
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#include <vector>
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#include "c10/util/Registry.h"
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#include "caffe2/core/blob.h"
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#include "caffe2/core/common.h"
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#include "caffe2/core/logging.h"
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#include "caffe2/core/net.h"
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#include "caffe2/core/observer.h"
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#include "caffe2/core/operator_schema.h"
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#include "caffe2/core/tensor.h"
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#include "caffe2/core/workspace.h"
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#include "caffe2/proto/caffe2_pb.h"
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#include "caffe2/utils/simple_queue.h"
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namespace caffe2 {
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namespace dag_utils {
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struct OperatorNode {
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unique_ptr<OperatorBase> operator_;
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vector<int> children_;
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vector<int> parents_;
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std::atomic<int> runtime_parent_count_;
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bool is_chain_start_ = false;
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std::atomic_flag scheduled_ = ATOMIC_FLAG_INIT;
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};
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struct OpGraphNode {
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vector<int> children_;
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vector<int> parents_;
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int visited_inputs = 0;
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int num_orig_parents;
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};
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using ExecutionChains = std::unordered_map<int, std::vector<int>>;
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C10_EXPORT ExecutionChains computeChains(std::vector<OperatorNode>& orig_nodes);
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// Instead of breaking down the DAG into chains, we partition it into clusters
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// of sync ops and individual async op. This is useful for disturbuted inference
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// case where we have sync and async cpu ops. Note that we have go sync each
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// aysnc op instead of put them into the chain and sync its tail like GPU op,
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// because CPU async ops are typically rpc calls and are not guaranteed to be
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// linearized at remote site.
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C10_EXPORT ExecutionChains computeGroups(std::vector<OperatorNode>& orig_nodes);
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C10_EXPORT ExecutionChains singleChains(std::vector<OperatorNode>& nodes);
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C10_EXPORT std::vector<OperatorNode> prepareOperatorNodes(
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const std::shared_ptr<const NetDef>& net_def,
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Workspace* ws);
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std::vector<OpGraphNode> prepareChainGraphNodes(
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const std::vector<dag_utils::OperatorNode>& operator_nodes,
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const std::vector<std::vector<int>>& execution_chains);
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} // namespace dag_utils
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} // namespace caffe2
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#endif // CAFFE2_CORE_NET_DAG_UTILS_H_
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