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10 files changed

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‎infini_train/include/autograd/accumulate.h‎

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@@ -18,6 +18,8 @@ class AccumulateGrad final : public Function {
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std::vector<std::shared_ptr<Tensor>> Backward(const std::vector<std::shared_ptr<Tensor>> &) override;
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std::shared_ptr<Tensor> tensor() const { return tensor_; }
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private:
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std::shared_ptr<Tensor> tensor_ = nullptr;
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float learning_rate_ = 1.0f;

‎infini_train/include/autograd/function.h‎

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@@ -1,5 +1,6 @@
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#pragma once
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#include <functional>
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#include <memory>
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#include <utility>
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#include <vector>
@@ -9,6 +10,14 @@ class Tensor;
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}
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namespace infini_train::autograd {
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class HookHandle;
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using FunctionForwardPreHook = std::function<void(class Function*, const std::vector<std::shared_ptr<Tensor>>&)>;
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using FunctionForwardPostHook = std::function<void(class Function*, const std::vector<std::shared_ptr<Tensor>>&,
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const std::vector<std::shared_ptr<Tensor>>&)>;
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using FunctionBackwardPreHook = std::function<void(class Function*, const std::vector<std::shared_ptr<Tensor>>&)>;
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using FunctionBackwardPostHook = std::function<void(class Function*, const std::vector<std::shared_ptr<Tensor>>&,
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const std::vector<std::shared_ptr<Tensor>>&)>;
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class Function : public std::enable_shared_from_this<Function> {
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public:
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static constexpr char kUndefinedType[] = "Undefined";
@@ -28,6 +37,11 @@ class Function : public std::enable_shared_from_this<Function> {
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void IncreaseDependenciesNumber();
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std::shared_ptr<HookHandle> RegisterForwardPreHook(FunctionForwardPreHook hook);
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std::shared_ptr<HookHandle> RegisterForwardPostHook(FunctionForwardPostHook hook);
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std::shared_ptr<HookHandle> RegisterBackwardPreHook(FunctionBackwardPreHook hook);
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std::shared_ptr<HookHandle> RegisterBackwardPostHook(FunctionBackwardPostHook hook);
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protected:
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std::vector<std::shared_ptr<Tensor>> saved_tensors_;
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@@ -38,5 +52,9 @@ class Function : public std::enable_shared_from_this<Function> {
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int grad_outputs_reached_ = 0;
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std::vector<std::shared_ptr<Tensor>> grad_outputs_;
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const std::string type_ = kUndefinedType;
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std::vector<FunctionForwardPreHook> forward_pre_hooks_;
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std::vector<FunctionForwardPostHook> forward_post_hooks_;
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std::vector<FunctionBackwardPreHook> backward_pre_hooks_;
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std::vector<FunctionBackwardPostHook> backward_post_hooks_;
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};
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} // namespace infini_train::autograd

‎infini_train/include/autograd/function_hook.h‎

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@@ -1,6 +1,8 @@
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#pragma once
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#include <functional>
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#include <memory>
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#include <vector>
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#include "infini_train/include/nn/parallel/reduce_op_type.h"
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@@ -13,6 +15,8 @@ class ProcessGroup;
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} // namespace infini_train
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namespace infini_train::autograd {
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class Function;
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class HookHandle;
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class PostAccumulateGradHook {
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public:
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virtual void operator()(const std::shared_ptr<Tensor> &tensor) = 0;
@@ -30,4 +34,36 @@ class AllReducePostAccumulateHook : public PostAccumulateGradHook {
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infini_train::nn::parallel::function::ReduceOpType reduce_op_;
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const infini_train::nn::parallel::ProcessGroup *pg_ = nullptr;
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};
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// Forward pre-hook: called before forward pass
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using FunctionForwardPreHook = std::function<void(Function*, const std::vector<std::shared_ptr<Tensor>>&)>;
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// Forward post-hook: called after forward pass
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using FunctionForwardPostHook = std::function<void(Function*, const std::vector<std::shared_ptr<Tensor>>&,
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const std::vector<std::shared_ptr<Tensor>>&)>;
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// Backward pre-hook: called before backward pass
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using FunctionBackwardPreHook = std::function<void(Function*, const std::vector<std::shared_ptr<Tensor>>&)>;
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// Backward post-hook: called after backward pass
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using FunctionBackwardPostHook = std::function<void(Function*, const std::vector<std::shared_ptr<Tensor>>&,
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const std::vector<std::shared_ptr<Tensor>>&)>;
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template <typename HookType>
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class FunctionHookHandleImpl : public HookHandle {
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public:
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FunctionHookHandleImpl(std::vector<HookType>* hooks, size_t id) : hooks_(hooks), id_(id) {}
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void Remove() override {
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if (!removed_ && hooks_ && id_ < hooks_->size()) {
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(*hooks_)[id_] = nullptr;
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removed_ = true;
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}
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}
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private:
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std::vector<HookType>* hooks_;
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size_t id_;
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bool removed_ = false;
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};
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} // namespace infini_train::autograd

‎infini_train/include/autograd/tensor_hook.h‎

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@@ -0,0 +1,37 @@
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#pragma once
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#include <functional>
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#include <memory>
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#include <vector>
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namespace infini_train {
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class Tensor;
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namespace autograd {
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// Hook handle for removing hooks
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class HookHandle {
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public:
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virtual ~HookHandle() = default;
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virtual void Remove() = 0;
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};
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// Tensor backward hook: modifies gradient during backward pass
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// Returns modified gradient or nullptr to keep original
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using TensorBackwardHook = std::function<std::shared_ptr<Tensor>(const std::shared_ptr<Tensor>&)>;
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class TensorBackwardHookHandle : public HookHandle {
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public:
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TensorBackwardHookHandle(std::vector<TensorBackwardHook>* hooks, size_t id)
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: hooks_(hooks), id_(id) {}
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void Remove() override;
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private:
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std::vector<TensorBackwardHook>* hooks_;
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size_t id_;
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bool removed_ = false;
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};
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} // namespace autograd
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} // namespace infini_train

‎infini_train/include/nn/module_hook.h‎

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#pragma once
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#include <functional>
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#include <memory>
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#include <vector>
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namespace infini_train {
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class Tensor;
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namespace nn {
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class Module;
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// Forward pre-hook: called before forward pass
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// Args: (module, input_tensors)
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using ForwardPreHook = std::function<void(Module*, const std::vector<std::shared_ptr<Tensor>>&)>;
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// Forward post-hook: called after forward pass
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// Args: (module, input_tensors, output_tensors)
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using ForwardPostHook = std::function<void(Module*, const std::vector<std::shared_ptr<Tensor>>&,
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const std::vector<std::shared_ptr<Tensor>>&)>;
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// Backward pre-hook: called before backward pass
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// Args: (module, grad_output)
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using BackwardPreHook = std::function<void(Module*, const std::vector<std::shared_ptr<Tensor>>&)>;
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// Backward post-hook: called after backward pass
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// Args: (module, grad_input, grad_output)
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using BackwardPostHook = std::function<void(Module*, const std::vector<std::shared_ptr<Tensor>>&,
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const std::vector<std::shared_ptr<Tensor>>&)>;
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class ModuleHookHandle {
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public:
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virtual ~ModuleHookHandle() = default;
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virtual void Remove() = 0;
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};
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template <typename HookType>
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class ModuleHookHandleImpl : public ModuleHookHandle {
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public:
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ModuleHookHandleImpl(std::vector<HookType>* hooks, size_t id) : hooks_(hooks), id_(id) {}
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void Remove() override {
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if (!removed_ && hooks_ && id_ < hooks_->size()) {
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(*hooks_)[id_] = nullptr;
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removed_ = true;
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}
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}
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private:
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std::vector<HookType>* hooks_;
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size_t id_;
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bool removed_ = false;
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};
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} // namespace nn
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} // namespace infini_train

‎infini_train/include/nn/modules/module.h‎

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@@ -7,6 +7,7 @@
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#include <vector>
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#include "infini_train/include/datatype.h"
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#include "infini_train/include/nn/module_hook.h"
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namespace infini_train {
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class Tensor;
@@ -46,6 +47,10 @@ class Module : public std::enable_shared_from_this<Module> {
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std::unordered_map<std::string, std::shared_ptr<Tensor>> StateDict() const;
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// operator() calls hooks and Forward
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std::vector<std::shared_ptr<Tensor>> operator()(const std::vector<std::shared_ptr<Tensor>> &input_tensors);
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// Forward to be overridden by subclasses
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virtual std::vector<std::shared_ptr<Tensor>> Forward(const std::vector<std::shared_ptr<Tensor>> &input_tensors);
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virtual float TrainStep(const std::vector<std::shared_ptr<Tensor>> &input_tensors,
@@ -62,13 +67,24 @@ class Module : public std::enable_shared_from_this<Module> {
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virtual std::shared_ptr<Module> ReplicateForDataParallel(int device_idx) const;
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// Hook registration methods
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std::shared_ptr<ModuleHookHandle> RegisterForwardPreHook(ForwardPreHook hook);
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std::shared_ptr<ModuleHookHandle> RegisterForwardPostHook(ForwardPostHook hook);
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std::shared_ptr<ModuleHookHandle> RegisterBackwardPreHook(BackwardPreHook hook);
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std::shared_ptr<ModuleHookHandle> RegisterBackwardPostHook(BackwardPostHook hook);
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protected:
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const Device *device_ = nullptr;
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const std::string type_ = kUndefinedType;
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std::unordered_map<std::string, std::shared_ptr<Module>> modules_;
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std::unordered_map<std::string, std::shared_ptr<Tensor>> parameters_;
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std::unordered_map<std::string, std::shared_ptr<Tensor>> buffers_;
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std::vector<ForwardPreHook> forward_pre_hooks_;
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std::vector<ForwardPostHook> forward_post_hooks_;
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std::vector<BackwardPreHook> backward_pre_hooks_;
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std::vector<BackwardPostHook> backward_post_hooks_;
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private:
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std::unordered_map<std::string, std::shared_ptr<Module>>
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NamedModules(const std::string &prefix = "", bool remove_duplicate = true,

‎infini_train/include/utils/precision_checker.h‎

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#pragma once
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#include <memory>
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#include <string>
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#include <vector>
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namespace infini_train {
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class Tensor;
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10+
namespace autograd {
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class Function;
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class HookHandle;
13+
} // namespace autograd
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15+
namespace nn {
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class Module;
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} // namespace nn
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namespace utils {
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class PrecisionChecker {
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public:
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struct Config {
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bool check_nan = true;
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bool check_inf = true;
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bool print_stats = true;
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bool abort_on_error = false;
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};
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static void RegisterForFunction(autograd::Function* func, const std::string& name = "",
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const Config& config = Config());
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static void RegisterForAllFunctions(const std::vector<std::shared_ptr<autograd::Function>>& functions,
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const Config& config = Config());
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// Register hooks for a Module (checks forward inputs/outputs)
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static void RegisterForModule(nn::Module* module, const std::string& name = "",
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const Config& config = Config());
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private:
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static void CheckTensors(const std::string& stage, const std::string& name,
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const std::vector<std::shared_ptr<Tensor>>& tensors,
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const Config& config);
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};
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} // namespace utils
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} // namespace infini_train

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