Pin PyTorch & xformers versions (#2155)

.github/workflows/publish.yml

@@ -49,7 +49,7 @@ jobs:
       matrix:
           os: ['ubuntu-20.04']
           python-version: ['3.8', '3.9', '3.10', '3.11']
-          pytorch-version: ['2.1.1']
+          pytorch-version: ['2.1.2']  # Must be the most recent version that meets requirements.txt.
           cuda-version: ['11.8', '12.1']
 
     steps:

pyproject.toml

@@ -4,7 +4,7 @@ requires = [
     "ninja",
     "packaging",
     "setuptools >= 49.4.0",
-    "torch >= 2.1.1",
+    "torch == 2.1.2",
     "wheel",
 ]
 build-backend = "setuptools.build_meta"

requirements-build.txt

@@ -2,5 +2,5 @@
 ninja
 packaging
 setuptools>=49.4.0
-torch>=2.1.0
+torch==2.1.2
 wheel
\ No newline at end of file

requirements.txt

@@ -5,9 +5,9 @@ pandas  # Required for Ray data.
 pyarrow  # Required for Ray data.
 sentencepiece  # Required for LLaMA tokenizer.
 numpy
-torch >= 2.1.1
+torch == 2.1.2
 transformers >= 4.36.0  # Required for Mixtral.
-xformers >= 0.0.23  # Required for CUDA 12.1.
+xformers == 0.0.23  # Required for CUDA 12.1.
 fastapi
 uvicorn[standard]
 pydantic == 1.10.13  # Required for OpenAI server.