fix ci; specify flash-attn version

Author: YeAnbang

.github/workflows/run_chatgpt_examples.yml

@@ -33,6 +33,10 @@ jobs:
         run: |
           pip install --no-cache-dir -v -e .
 
+      - name: Install flash-attention
+        run: |
+          pip install https://github.com/Dao-AILab/flash-attention/releases/download/v2.7.4.post1/flash_attn-2.7.4.post1+cu12torch2.5cxx11abiFALSE-cp310-cp310-linux_x86_64.whl
+          # https://release-assets.githubusercontent.com/github-production-release-asset/494232964/eea5ccc0-9cb8-48d3-ac9d-049198a38582?sp=r&sv=2018-11-09&sr=b&spr=https&se=2025-11-11T11%3A24%3A12Z&rscd=attachment%3B+filename%3Dflash_attn-2.7.4.post1%2Bcu12torch2.5cxx11abiFALSE-cp310-cp310-linux_x86_64.whl&rsct=application%2Foctet-stream&skoid=96c2d410-5711-43a1-aedd-ab1947aa7ab0&sktid=398a6654-997b-47e9-b12b-9515b896b4de&skt=2025-11-11T10%3A23%3A28Z&ske=2025-11-11T11%3A24%3A12Z&sks=b&skv=2018-11-09&sig=PBlHLl81QvE2jqPG%2FFFmmwW5rUBiKKZCiponNJIUnoU%3D&jwt=eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJpc3MiOiJnaXRodWIuY29tIiwiYXVkIjoicmVsZWFzZS1hc3NldHMuZ2l0aHVidXNlcmNvbnRlbnQuY29tIiwia2V5Ijoia2V5MSIsImV4cCI6MTc2Mjg2MDc1OCwibmJmIjoxNzYyODU3MTU4LCJwYXRoIjoicmVsZWFzZWFzc2V0cHJvZHVjdGlvbi5ibG9iLmNvcmUud2luZG93cy5uZXQifQ.ZB3u9Nzw0xCKvUCbpTXXku8fPsNRcq65pMztucY0N9g&response-content-disposition=attachment%3B%20filename%3Dflash_attn-2.7.4.post1%2Bcu12torch2.5cxx11abiFALSE-cp310-cp310-linux_x86_64.whl&response-content-type=application%2Foctet-stream
       - name: Install ChatGPT
         env:
           CFLAGS: "-O1"
@@ -43,10 +47,6 @@ jobs:
           pip install --no-cache-dir -v .
           pip install --no-cache-dir -r examples/requirements.txt
 
-      # - name: Install flash-attention
-      #   run: |
-      #     pip install flash-attn==2.7.4.post1 --no-build-isolation
-
       # - name: Install Transformers
       #   run: |
       #     pip install --no-cache-dir transformers==4.36.2