[legacy] clean up legacy code (#4743)

* [legacy] remove outdated codes of pipeline (#4692)

* [legacy] remove cli of benchmark and update optim (#4690)

* [legacy] remove cli of benchmark and update optim

* [doc] fix cli doc test

* [legacy] fix engine clip grad norm

* [legacy] remove outdated colo tensor (#4694)

* [legacy] remove outdated colo tensor

* [test] fix test import

* [legacy] move outdated zero to legacy (#4696)

* [legacy] clean up utils (#4700)

* [legacy] clean up utils

* [example] update examples

* [legacy] clean up amp

* [legacy] fix amp module

* [legacy] clean up gpc (#4742)

* [legacy] clean up context

* [legacy] clean core, constants and global vars

* [legacy] refactor initialize

* [example] fix examples ci

* [example] fix examples ci

* [legacy] fix tests

* [example] fix gpt example

* [example] fix examples ci

* [devops] fix ci installation

* [example] fix examples ci

colossalai/legacy/tensor/compute_spec.py

@@ -0,0 +1,29 @@
+from enum import Enum
+
+
+class ComputePattern(Enum):
+    TP1D = 0
+    TP2D = 1
+    TP2P5D = 2
+    TP3D = 3
+
+
+class ComputeSpec(object):
+    """ComputeSpec
+    The Specification for computation pattern
+
+    Args:
+        compute_pattern (ComputePattern): an Enum instance for compute pattern.
+    """
+
+    def __init__(self, compute_pattern: ComputePattern) -> None:
+        assert isinstance(compute_pattern, ComputePattern)
+        self.compute_pattern = compute_pattern
+        # Make sure output tensors are replicate
+        self.output_replicate = True
+
+    def __repr__(self):
+        return f'ComputeSpec(pattern={self.compute_pattern}, replicate_output={self.output_replicate})'
+
+    def set_output_replicate(self, flag: bool = True):
+        self.output_replicate = flag