[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>

tests/test_pipeline/test_p2p_communication.py

@@ -71,7 +71,7 @@ def check_p2p_communication():
 
 
 def run_dist(rank, world_size, port):
-    colossalai.launch(config={}, rank=rank, world_size=world_size, port=port, host="localhost")
+    colossalai.launch(rank=rank, world_size=world_size, port=port, host="localhost")
     check_p2p_communication()
 
 

tests/test_pipeline/test_schedule/test_interleaved.py

@@ -58,7 +58,7 @@ def run_pp(
     This test is to examine the correctness of interleaved 1F1B, compared with torch.
     Be aware it contains some hardcodes.
     """
-    colossalai.launch(config=dict(), rank=rank, world_size=world_size, port=port, host="localhost")
+    colossalai.launch(rank=rank, world_size=world_size, port=port, host="localhost")
 
     # create model
     seed_all(1453)

tests/test_pipeline/test_schedule/test_oneF_oneB.py

@@ -148,7 +148,7 @@ def run_dist(
     num_microbatch: int,
     batch_size: int,
 ):
-    colossalai.launch(config=dict(), rank=rank, world_size=world_size, port=port, host="localhost")
+    colossalai.launch(rank=rank, world_size=world_size, port=port, host="localhost")
     examine_pp(num_microbatch, batch_size)
 
 

tests/test_pipeline/test_stage_manager.py

@@ -64,7 +64,7 @@ def check_stage_manager():
 
 
 def run_dist(rank, world_size, port):
-    colossalai.launch(config={}, rank=rank, world_size=world_size, port=port, host="localhost")
+    colossalai.launch(rank=rank, world_size=world_size, port=port, host="localhost")
     check_stage_manager()