[misc] refactor launch API and tensor constructor (#5666)

* [misc] remove config arg from initialize

* [misc] remove old tensor contrusctor

* [plugin] add npu support for ddp

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

* [devops] fix doc test ci

* [test] fix test launch

* [doc] update launch doc

---------

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

colossalai/initialize.py

@@ -2,20 +2,15 @@
 # -*- encoding: utf-8 -*-
 
 import os
-import warnings
-from pathlib import Path
-from typing import Dict, Union
 
 import torch.distributed as dist
 
 from colossalai.accelerator import get_accelerator
-from colossalai.context import Config
 from colossalai.logging import get_dist_logger
 from colossalai.utils import set_seed
 
 
 def launch(
-    config: Union[str, Path, Config, Dict],
     rank: int,
     world_size: int,
     host: str,
@@ -44,8 +39,6 @@ def launch(
     Raises:
         Exception: Raise exception when config type is wrong
     """
-    if rank == 0:
-        warnings.warn("`config` is deprecated and will be removed soon.")
 
     cur_accelerator = get_accelerator()
 
@@ -68,7 +61,6 @@ def launch(
 
 
 def launch_from_slurm(
-    config: Union[str, Path, Config, Dict],
     host: str,
     port: int,
     backend: str = "nccl",
@@ -95,7 +87,6 @@ def launch_from_slurm(
         )
 
     launch(
-        config=config,
         rank=rank,
         world_size=world_size,
         host=host,
@@ -107,7 +98,6 @@ def launch_from_slurm(
 
 
 def launch_from_openmpi(
-    config: Union[str, Path, Config, Dict],
     host: str,
     port: int,
     backend: str = "nccl",
@@ -135,7 +125,6 @@ def launch_from_openmpi(
         )
 
     launch(
-        config=config,
         local_rank=local_rank,
         rank=rank,
         world_size=world_size,
@@ -147,9 +136,7 @@ def launch_from_openmpi(
     )
 
 
-def launch_from_torch(
-    config: Union[str, Path, Config, Dict], backend: str = "nccl", seed: int = 1024, verbose: bool = True
-):
+def launch_from_torch(backend: str = "nccl", seed: int = 1024, verbose: bool = True):
     """A wrapper for colossalai.launch for torchrun or torch.distributed.launch by reading rank and world size
     from the environment variables set by PyTorch
 
@@ -171,7 +158,6 @@ def launch_from_torch(
         )
 
     launch(
-        config=config,
         local_rank=local_rank,
         rank=rank,
         world_size=world_size,