* [Enhance] Support non-scalar type metric value.

* Refactor support.

* Fix non-scalar tags problem during validation

* Update tag processor.

* [Enhance] Ensure metrics is not empty when saving best ckpts

* fix warn to warning

* delete a unnecessary method

* Add build_runner_with_tta and PrepareTTAHook

* rename hook file

* support build tta runner with runner type

* add unit test

* Add build_runner_with_tta to index.rst

* minor refine

* Add runner test cast

* Fix unit test

* fix unit test

* tmp save

* pop None if key does not exist

* Fix is_model_wrapper and force register class in test_runner

* [Fix] Fix is_model_wrapper

* destroy group after ut

* register module in testcase

* pass through unit test

* fix as comment

* remove breakpoint

* remove mmengine/testing/runner_test_cast.py

* minor refine

* minor refine

* minor refine

* set default data preprocessor for model

* minor refine

* minor refine

Co-authored-by: Zaida Zhou <58739961+zhouzaida@users.noreply.github.com>

* fix lint

* Fix unit test

* replace  with  in ImgDataPreprocessor

* Fix as comment

* add inference tutorial in advanced tutorial

* update index.rst

* add tta example

* refine tta tutorial

* Add english tutorial

* add note for build_runner_with_tta

* Fix as comment

* add examples

* remove chinese comment

* Update docs/en/advanced_tutorials/test_time_augmentation.md

Co-authored-by: RangiLyu <lyuchqi@gmail.com>

Co-authored-by: Zaida Zhou <58739961+zhouzaida@users.noreply.github.com>
Co-authored-by: RangiLyu <lyuchqi@gmail.com>

* [Feature] Add profiler hook functionality

* [Feature] Add profiler hook functionality

* [Feature] Add profiler hook functionality

* [Feature] Add profiler hook functionality

* [Feature] Add profiler hook functionality

* [Feature] Add profiler hook functionality

* [Feature] Add profiler hook functionality

* [Feature] Add profiler hook functionality

* [Feature] Add profiler hook functionality

* [Feature] Add profiler hook functionality

* [Feature] Add profiler hook functionality

* [Feature] Add profiler hook functionality

* [Feature] Add profiler hook functionality

* [Feature] Add profiler hook functionality

* [Feature] Add profiler hook functionality

* [Feature] Add profiler hook functionality

* [Feature] Add profiler hook functionality

* [Feature] Add profiler hook functionality

* [Feature] Add profiler hook functionality

* [Feature] Add profiler hook functionality

* [Feature] Add profiler hook functionality

* [Feature] Add profiler hook functionality

* [Feature] Add profiler hook functionality

* [Feature] Add profiler hook functionality

* [Feature] Add profiler hook functionality

* [Feature] Add profiler hook functionality

* [Feature] Add profiler hook functionality

* [Feature] Add profiler hook functionality

* [Feature] Add profiler hook functionality

* [Feature] Add profiler hook functionality

* [Feature] Add profiler hook functionality

* [Feature] Add profiler hook functionality

* [Feature] Add profiler hook functionality

* [Feature] Add profiler hook functionality

* Apply suggestions from code review

* Update mmengine/hooks/profiler_hook.py

Co-authored-by: Zaida Zhou <58739961+zhouzaida@users.noreply.github.com>

* Add test of get_hooks_info()

* Change to use original Runner for get_hook_info() test

* Change to test after_train_iter hooks for get_hook_info()

* Complement the stages list

* Add logging hooks information in Runner.__init__()

* Rearrange the stages list

* Restore the stages to tuple type

* Clean the unnecessary changes

* Replace  statement with TestCase's methods

* add test stages in method_stages_map

* change the hooks info into a f-string

* return list(trigger_stages) directly

* change keys of method_stages_map

* Fix previous changes to method_stages_map.keys

* fix add graph func is not called bug

* move add graph call to NaiveVisualizationHook.before_train

* Update mmengine/hooks/naive_visualization_hook.py

Co-authored-by: Zaida Zhou <58739961+zhouzaida@users.noreply.github.com>

* adjust param sequence and add docstring

* minor refine

* Update mmengine/visualization/vis_backend.py

* update version info

Co-authored-by: Zaida Zhou <58739961+zhouzaida@users.noreply.github.com>
Co-authored-by: HAOCHENYE <21724054@zju.edu.cn>

* [Fix] resume std and mean

* refine docstring

Co-authored-by: Zaida Zhou <58739961+zhouzaida@users.noreply.github.com>

* [Feature] Support torch ZeRORedundancyOptimizer

Co-authored-by: Junhwa Song <ethan9867@gmail.com>
Signed-off-by: Junhwa Song <ethan9867@gmail.com>
Signed-off-by: Hakjin Lee <nijkah@gmail.com>

* lint

* Fix saving optimizer state_dict

* Fix handling import error

* Add test case

* fix UT

* Revert "fix UT"

This reverts commit dd64538960ff7440c6020f533d43945ffc23f2d2.

* fix handling import in UT

* Fix saving zero checkpoint and delete redundant master_only

* lint

* test unittest

* Fix handling impor error

* Fix UT condition

* Edit docstrings

* Fix typo

* Skip redundant procudure in checkpoint hook

* fix typo again

* Update mmengine/optim/optimizer/zero_optimizer.py

Co-authored-by: Zaida Zhou <58739961+zhouzaida@users.noreply.github.com>

* Add api info

* lint

* Fix lint

* Handling AmpOptimWrapper case

* handling overlap_with_ddp

* Fix error

Signed-off-by: Junhwa Song <ethan9867@gmail.com>
Signed-off-by: Hakjin Lee <nijkah@gmail.com>
Co-authored-by: Junhwa Song <ethan9867@gmail.com>
Co-authored-by: Zaida Zhou <58739961+zhouzaida@users.noreply.github.com>

* Fix error format of log message

* Fix unit test

* remove unnecessary comment

* [Refactor] Refactor fileio but without breaking bc

* handle compatibility

* fix format

* modify io functions

* fix ut

* fix ut

* rename method names

* refine

* refine docstring

* fix ut in windows

* update ut

* minor fix

* ensure client is not None when closing it

* add more examples for list_dir_or_file interface

* refine docstring

* refine deprecated info

* fix ut

* add a description for lmdb docstring

* fix ema load_state_dict

* fix ema load_state_dict

* fix for test

* fix by review

* fix resume and keys

* [Fix] Fix EMAHook trigger train loop init during testing.

* fix sync buffer

* update ut

* fix sync buffer

* fix sync buffer

* [Refactor]: modify interface of Visualizer.add_datasample (#365)

* [Refactor] Refactor data flow: refine `data_preprocessor`. (#359)

* refine data_preprocessor

* remove unused BATCH_DATA alias

* Fix type hints

* rename move_data to cast_data

* [Refactor] Refactor data flow: collate data in `collate_fn` of `DataLoader`  (#323)

* acollate data in dataloader

* fix docstring

* refine comment

* fix as comment

* refactor default collate and psedo collate

* foramt test file

* fix docstring

* fix as comment

* rename elem to data_item

* minor fix

* fix as comment

* [Refactor] Refactor data flow: `data_batch` argument of `Evaluator.process is a `dict` (#360)

* refine evaluator and metric

* compatible with new default collate

* replace default collate with pseudo

* Handle data_batch in metric

* fix unit test

* fix unit test

* fix unit test

* minor refine

* make data_batch optional

make data_batch optional

* rename outputs to predictions

* fix ut

* rename predictions to outputs

* fix docstring

* fix docstring

* fix unit test

* make outputs and data_batch to kwargs

* fix unit test

* keep signature of metric

* fix ut

* rename pred_sample arguments to data_sample(Visualizer)

* fix loop and ut

* [refactor]: Refactor model dataflow (#398)

* [Refactor] Refactor data flow: refine `data_preprocessor`. (#359)

* refine data_preprocessor

* remove unused BATCH_DATA alias

* Fix type hints

* rename move_data to cast_data

* refactor model data flow

tmp_commt

tmp commit

* make val_cfg and test_cfg optional

* roll back runner

* pass test mmdet

* fix as comment

fix as comment

fix ci in DataPreprocessor

* fix ut

* fix ut

* fix rebase main

* [Fix]: Fix test val ddp (#462)

* [Fix] Fix docstring and type hint of data flow (#463)

* Fix docstring of data flow

* change signature of hook

* fix unit test

* resolve conflicts

* fix lint

* Rename data to structure

* adjust the way to import module

* adjust the way to import module

* rename Structure to Data Structures in docs api

* rename structure to structures

* support using some modules of mmengine without torch

* fix circleci config

* fix circleci config

* fix registry ut

* minor fix

* move init method from model/utils to model/weight_init.py

* move init method from model/utils to model/weight_init.py

* move sync_bn to model

* move functions depending on torch to dl_utils

* format import

* fix logging ut

* add weight init in model/__init__.py

* move get_config and get_model to mmengine/hub

* move log_processor.py to mmengine/runner

* fix ut

* Add TimeCounter in dl_utils/__init__.py

* [Refactor] Refactor the import rule

* minor refinement

* add a comment

* Move the design of hook to design/hook.md

* add relative links in docs

* update docstring of hooks

* refine checkpointhook docs

* refine

* fix comments

* refine

* add logging.md link in hook.md

* resolve comments

* fix typo

* fix wrong epoch andd iter when save bbest ckpt

* fix ut

* fix resume best ckpt unexpectedly

* minor refine

* fix unit test

* support training with data without metainfo

* clean the code

* clean the code

* BaseAveragedModel support load ckpt without module prefix

* refine docstring

* allow EMAHook does not load ckpt strictly

* add unit test for strict argument of EMAHook

* sync remote

* sync remote

* clean the code

* ema hook supports setting start iter

* fix unit test

* fix as comment

* fix as comment

* describe kwargs

* support save best based on multi metrics

* add unit test

* resolve bugs after rebasing

* revise docstring

* revise docstring

* fix as comment

* revise as comment

* make scheduler default to None

* fix bc breaking

* refine warning message

* fix as comment

* fix as comment

* fix lint

* Fix resume message hub and save metainfo in messagehub

* fix as comment

* Fix ema hook and add unit test

* save state_dict of ema.module

save state_dict of ema.module

* replace warning.warn with MMLogger.warn

* fix as comment

* fix bug

* fix bug

* fix bug of not save-best in iteration-based training

* revise the unit test

* [Feat] Support save best ckpt

* reformat code

* rename function and reformat code

* fix logging info

* [Refactor]:Refactor `after_val_epoch` to make it output metric by epoch

* add an option for user to choose the way of outputing metric

* rename variable

* reformat docstring

* add type alias

* reformat code

* add test function

* add comment and test code

* add comment and test code

* support resume from ceph

* move func and refine

* delete symlink

* fix unittest

* perserve _allow_symlink and symlink

* fix build train_loop during test

* fix build train_loop during test

* fix build train_loop during test

* fix build train_loop during test

* Fix as comment

* add base model, ddp model and unit test

* add unit test

* fix unit test

* fix docstring

* fix cpu unit test

* refine base data preprocessor

* refine base data preprocessor

* refine interface of ddp module

* remove optimizer hook

* add forward

* fix as comment

* fix unit test

* fix as comment

* fix build optimizer wrapper

* rebase main and fix unit test

* stack_batch support stacking ndim tensor, add docstring for merge dict

* fix lint

* fix test loop

* make precision_context effective to data_preprocessor

* fix as comment

* fix as comment

* refine docstring

* change collate_data output typehints

* rename to_rgb to bgr_to_rgb and rgb_to_bgr

* support build basemodel with built DataPreprocessor

* fix as comment

* fix docstring

* Support multiple optimizers

* minor refinement

* improve unit tests

* minor fix

* Update unit tests for resuming or saving ckpt for multiple optimizers

* refine docstring

* refine docstring

* fix typo

* update docstring

* refactor the logic to build multiple optimizers

* resolve comments

* ParamSchedulers spports multiple optimizers

* add optimizer_wrapper

* fix comment and docstirng

* fix unit test

* add unit test

* refine docstring

* RuntimeInfoHook supports printing multi learning rates

* resolve comments

* add optimizer_wrapper

* fix mypy

* fix lint

* fix OptimizerWrapperDict docstring and add unit test

* rename OptimizerWrapper to OptimWrapper, OptimWrapperDict inherit OptimWrapper, and fix as comment

* Fix AmpOptimizerWrapper

* rename build_optmizer_wrapper to build_optim_wrapper

* refine optimizer wrapper

* fix AmpOptimWrapper.step, docstring

* resolve confict

* rename DefaultOptimConstructor

* fix as comment

* rename clig grad auguments

* refactor optim_wrapper config

* fix docstring of DefaultOptimWrapperConstructor

fix docstring of DefaultOptimWrapperConstructor

* add get_lr method to OptimWrapper and OptimWrapperDict

* skip some amp unit test

* fix unit test

* fix get_lr, get_momentum docstring

* refactor get_lr, get_momentum, fix as comment

* fix error message

Co-authored-by: zhouzaida <zhouzaida@163.com>

* Support multiple optimizers

* minor refinement

* improve unit tests

* minor fix

* Update unit tests for resuming or saving ckpt for multiple optimizers

* refine docstring

* refine docstring

* fix typo

* update docstring

* refactor the logic to build multiple optimizers

* resolve comments

* ParamSchedulers spports multiple optimizers

* refine docstring

* RuntimeInfoHook supports printing multi learning rates

* resolve comments

* fix typo

* [Fix] Fix ema state dict swapping in EMAHook.

* fix pt1.5 ut

* add more comments

* fix 'Runner' object has no attribute 'log_buffer'

* update

* add train

* [Enhance] Add RuntimeInfoHook to update runtime information.

* move lr to runtime info

* docstring

* resolve comments

* update ut and doc