update unit testing CI rules

.github/workflows/assign_reviewer.yml

+name: Assign Reviewers for Team
+
+on: 
+  pull_request:
+    types: [opened]
+
+jobs:
+  assign_reviewer:
+    name: Assign Reviewer for PR
+    runs-on: ubuntu-latest
+    if: |
+      github.event.pull_request.draft == false && 
+      (github.base_ref == 'main' || github.base_ref == 'develop') 
+      && github.event.pull_request.base.repo.full_name == 'hpcaitech/ColossalAI' 
+      && toJson(github.event.pull_request.requested_reviewers) == '[]'
+    steps:
+      - uses: kentaro-m/auto-assign-action@v1.2.1
+        with:
+          configuration-path: '.github/reviewer_list.yml'

.github/workflows/PR_CI.yml → .github/workflows/build.yml

-name: Pull Request CI and Build
+name: Build
 
-on: pull_request
+on: 
+  pull_request:
+    types: [synchronize, labeled]
 
 jobs:
-  cancel_previous_workflow:
-    runs-on: ubuntu-latest
-    if: github.event.pull_request.draft == false && (github.base_ref == 'main' || github.base_ref == 'develop') && github.event.pull_request.base.repo.full_name == 'hpcaitech/ColossalAI'
-    steps:
-      - name: Cancel Previous Runs
-        uses: styfle/cancel-workflow-action@0.9.1
-        with:
-          access_token: ${{ github.token }}
-
-  assign_reviewer:
-    name: Assign Reviewer for PR
-    runs-on: ubuntu-latest
-    if: github.event.pull_request.draft == false && (github.base_ref == 'main' || github.base_ref == 'develop') && github.event.pull_request.base.repo.full_name == 'hpcaitech/ColossalAI' && toJson(github.event.pull_request.requested_reviewers) == '[]'
-    steps:
-      - uses: kentaro-m/auto-assign-action@v1.2.1
-        with:
-          configuration-path: '.github/reviewer_list.yml'
-
   build:
     name: Build and Test Colossal-AI
-    if: ${{ always() }} && github.event.pull_request.draft == false && (github.base_ref == 'main'  || github.base_ref == 'develop') && github.event.pull_request.base.repo.full_name == 'hpcaitech/ColossalAI'
-    needs: [cancel_previous_workflow, assign_reviewer]
+    if: |
+        github.event.pull_request.draft == false && 
+        (github.base_ref == 'main' || github.base_ref == 'develop') && 
+        github.event.pull_request.base.repo.full_name == 'hpcaitech/ColossalAI' &&
+        contains( github.event.pull_request.labels.*.name, 'Run Build and Test')
     runs-on: [self-hosted, gpu]
     container:
       image: nvcr.io/nvidia/pytorch:21.07-py3

.github/workflows/close_inactive.yml

 name: Close inactive issues
+
 on:
   schedule:
     - cron: "0 0 * * *"

.github/workflows/compatibility_test.yml

 name: Compatibility Test
 
-# set to pull_request for testing purpose
-# will change to workflow_dispatch when PR to develop
-on: pull_request
+on: workflow_dispatch
 
 jobs:
   build:
     name: Test for PyTorch compatibility
-    # comment for now, will uncomment when PR to develop
-    # if: (github.base_ref == 'main'  || github.base_ref == 'develop') && github.repository == 'hpcaitech/ColossalAI'
-    runs-on: [self-hosted, gpu]
+    if: (github.base_ref == 'main'  || github.base_ref == 'develop') && github.repository == 'hpcaitech/ColossalAI'
+    runs-on: [self-hosted, aws]
     strategy:
       fail-fast: false
       matrix:
@@ -24,7 +21,7 @@ jobs:
     container:
       image: ${{ matrix.container }}
       options: --gpus all --rm --ipc=host -v /data/scratch/cifar-10:/data/scratch/cifar-10
-    timeout-minutes: 180
+    timeout-minutes: 120
     steps:
       - name: Setup Environment
         run: |

.github/workflows/release.yml

 name: Publish to PyPI
+
 on: workflow_dispatch
 
 jobs:

.github/workflows/submodule.yml

 name: Synchronize Submodule
+
 on: 
   workflow_dispatch:
   schedule:
@@ -12,6 +13,7 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v2
         with:
+          ref: 'develop'
           submodules: true
 
       - name: echo

setup.py

@@ -218,7 +218,7 @@ setup(
     extras_require={
         'zero': fetch_requirements('requirements/requirements-zero.txt'),
     },
-    python_requires='>=3.6',
+    python_requires='>=3.7',
     classifiers=[
         'Programming Language :: Python :: 3',
         'License :: OSI Approved :: Apache Software License',