[CI] Use official Pytorch 2.1, add CUDA 11.8 for Pytorch 2.1

.github/workflows/publish.yml

@@ -44,7 +44,7 @@ jobs:
           # manylinux docker image, but I haven't figured out how to install CUDA on manylinux.
           os: [ubuntu-20.04]
           python-version: ['3.7', '3.8', '3.9', '3.10', '3.11']
-          torch-version: ['1.12.1', '1.13.1', '2.0.1', '2.1.0.dev20230731']
+          torch-version: ['1.12.1', '1.13.1', '2.0.1', '2.1.0']
           cuda-version: ['11.6.2', '11.7.1', '11.8.0', '12.1.0', '12.2.0']
           # We need separate wheels that either uses C++11 ABI (-D_GLIBCXX_USE_CXX11_ABI) or not.
           # Pytorch wheels currently don't use it, but nvcr images have Pytorch compiled with C++11 ABI.
@@ -58,7 +58,7 @@ jobs:
             # Pytorch >= 2.0 only supports Python >= 3.8
             - torch-version: '2.0.1'
               python-version: '3.7'
-            - torch-version: '2.1.0.dev20230731'
+            - torch-version: '2.1.0'
               python-version: '3.7'
             # Pytorch <= 2.0 only supports CUDA <= 11.8
             - torch-version: '1.12.1'
@@ -73,17 +73,15 @@ jobs:
               cuda-version: '12.1.0'
             - torch-version: '2.0.1'
               cuda-version: '12.2.0'
-            # Pytorch >= 2.1 only supports CUDA >= 12.1
-            - torch-version: '2.1.0.dev20230731'
+            # Pytorch >= 2.1 only supports CUDA >= 11.8
+            - torch-version: '2.1.0'
               cuda-version: '11.6.2'
-            - torch-version: '2.1.0.dev20230731'
+            - torch-version: '2.1.0'
               cuda-version: '11.7.1'
-            - torch-version: '2.1.0.dev20230731'
-              cuda-version: '11.8.0'
             # Pytorch >= 2.1 with nvcc 12.1.0 segfaults during compilation, so
             # we only use CUDA 12.2. setup.py as a special case that will
             # download the wheel for CUDA 12.2 instead.
-            - torch-version: '2.1.0.dev20230731'
+            - torch-version: '2.1.0'
               cuda-version: '12.1.0'
 
     steps:
@@ -132,7 +130,7 @@ jobs:
           # We want to figure out the CUDA version to download pytorch
           # e.g. we can have system CUDA version being 11.7 but if torch==1.12 then we need to download the wheel from cu116
           # This code is ugly, maybe there's a better way to do this.
-          export TORCH_CUDA_VERSION=$(python -c "import os; minv = {'1.12': 113, '1.13': 116, '2.0': 117, '2.1': 121}[os.environ['MATRIX_TORCH_VERSION']]; maxv = {'1.12': 116, '1.13': 117, '2.0': 118, '2.1': 121}[os.environ['MATRIX_TORCH_VERSION']]; print(max(min(int(os.environ['MATRIX_CUDA_VERSION']), maxv), minv))")
+          export TORCH_CUDA_VERSION=$(python -c "import os; minv = {'1.12': 113, '1.13': 116, '2.0': 117, '2.1': 118}[os.environ['MATRIX_TORCH_VERSION']]; maxv = {'1.12': 116, '1.13': 117, '2.0': 118, '2.1': 121}[os.environ['MATRIX_TORCH_VERSION']]; print(max(min(int(os.environ['MATRIX_CUDA_VERSION']), maxv), minv))")
           if [[ ${{ matrix.torch-version }} == *"dev"* ]]; then
             pip install --no-cache-dir --pre torch==${{ matrix.torch-version }} --index-url https://download.pytorch.org/whl/nightly/cu${TORCH_CUDA_VERSION}
           else

flash_attn/__init__.py

-__version__ = "2.3.1"
+__version__ = "2.3.1.post1"
 
 from flash_attn.flash_attn_interface import (
     flash_attn_func,

setup.py

@@ -233,7 +233,8 @@ def get_wheel_url():
     # _, cuda_version_raw = get_cuda_bare_metal_version(CUDA_HOME)
     torch_cuda_version = parse(torch.version.cuda)
     torch_version_raw = parse(torch.__version__)
-    if torch_version_raw.major == 2 and torch_version_raw.minor == 1:
+    # Workaround for nvcc 12.1 segfaults when compiling with Pytorch 2.1
+    if torch_version_raw.major == 2 and torch_version_raw.minor == 1 and torch_cuda_version.major == 12:
         torch_cuda_version = parse("12.2")
     python_version = f"cp{sys.version_info.major}{sys.version_info.minor}"
     platform_name = get_platform()

training/Dockerfile

@@ -85,11 +85,11 @@ RUN pip install transformers==4.25.1 datasets==2.8.0 pytorch-lightning==1.8.6 tr
 RUN pip install git+https://github.com/mlcommons/logging.git@2.1.0
 
 # Install FlashAttention
-RUN pip install flash-attn==2.3.1
+RUN pip install flash-attn==2.3.1.post1
 
 # Install CUDA extensions for fused dense, layer norm
 RUN git clone https://github.com/HazyResearch/flash-attention \
-    && cd flash-attention && git checkout v2.3.1 \
+    && cd flash-attention && git checkout v2.3.1.post1 \
     && cd csrc/layer_norm && pip install . && cd ../../ \
     && cd csrc/fused_dense_lib && pip install . && cd ../../ \
     && cd .. && rm -rf flash-attention