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setup.py
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setup.py
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import io
import os
import re
import subprocess
from typing import List, Set
import warnings
from packaging.version import parse, Version
import setuptools
import torch
from torch.utils.cpp_extension import BuildExtension, CUDAExtension, CUDA_HOME
ROOT_DIR = os.path.dirname(__file__)
MAIN_CUDA_VERSION = "12.1"
# Supported NVIDIA GPU architectures.
SUPPORTED_ARCHS = {"7.0", "7.5", "8.0", "8.6", "8.9", "9.0"}
# Compiler flags.
CXX_FLAGS = ["-g", "-O2", "-std=c++17"]
# TODO(woosuk): Should we use -O3?
NVCC_FLAGS = ["-O2", "-std=c++17"]
ABI = 1 if torch._C._GLIBCXX_USE_CXX11_ABI else 0
CXX_FLAGS += [f"-D_GLIBCXX_USE_CXX11_ABI={ABI}"]
NVCC_FLAGS += [f"-D_GLIBCXX_USE_CXX11_ABI={ABI}"]
if CUDA_HOME is None:
raise RuntimeError(
"Cannot find CUDA_HOME. CUDA must be available to build the package.")
def get_nvcc_cuda_version(cuda_dir: str) -> Version:
"""Get the CUDA version from nvcc.
Adapted from https://github.com/NVIDIA/apex/blob/8b7a1ff183741dd8f9b87e7bafd04cfde99cea28/setup.py
"""
nvcc_output = subprocess.check_output([cuda_dir + "/bin/nvcc", "-V"],
universal_newlines=True)
output = nvcc_output.split()
release_idx = output.index("release") + 1
nvcc_cuda_version = parse(output[release_idx].split(",")[0])
return nvcc_cuda_version
def get_torch_arch_list() -> Set[str]:
# TORCH_CUDA_ARCH_LIST can have one or more architectures,
# e.g. "8.0" or "7.5,8.0,8.6+PTX". Here, the "8.6+PTX" option asks the
# compiler to additionally include PTX code that can be runtime-compiled
# and executed on the 8.6 or newer architectures. While the PTX code will
# not give the best performance on the newer architectures, it provides
# forward compatibility.
env_arch_list = os.environ.get("TORCH_CUDA_ARCH_LIST", None)
if env_arch_list is None:
return set()
# List are separated by ; or space.
torch_arch_list = set(env_arch_list.replace(" ", ";").split(";"))
if not torch_arch_list:
return set()
# Filter out the invalid architectures and print a warning.
valid_archs = SUPPORTED_ARCHS.union({s + "+PTX" for s in SUPPORTED_ARCHS})
arch_list = torch_arch_list.intersection(valid_archs)
# If none of the specified architectures are valid, raise an error.
if not arch_list:
raise RuntimeError(
"None of the CUDA architectures in `TORCH_CUDA_ARCH_LIST` env "
f"variable ({env_arch_list}) is supported. "
f"Supported CUDA architectures are: {valid_archs}.")
invalid_arch_list = torch_arch_list - valid_archs
if invalid_arch_list:
warnings.warn(
f"Unsupported CUDA architectures ({invalid_arch_list}) are "
"excluded from the `TORCH_CUDA_ARCH_LIST` env variable "
f"({env_arch_list}). Supported CUDA architectures are: "
f"{valid_archs}.",
stacklevel=2)
return arch_list
# First, check the TORCH_CUDA_ARCH_LIST environment variable.
compute_capabilities = get_torch_arch_list()
if not compute_capabilities:
# If TORCH_CUDA_ARCH_LIST is not defined or empty, target all available
# GPUs on the current machine.
device_count = torch.cuda.device_count()
for i in range(device_count):
major, minor = torch.cuda.get_device_capability(i)
if major < 7:
raise RuntimeError(
"GPUs with compute capability below 7.0 are not supported.")
compute_capabilities.add(f"{major}.{minor}")
nvcc_cuda_version = get_nvcc_cuda_version(CUDA_HOME)
if not compute_capabilities:
# If no GPU is specified nor available, add all supported architectures
# based on the NVCC CUDA version.
compute_capabilities = SUPPORTED_ARCHS.copy()
if nvcc_cuda_version < Version("11.1"):
compute_capabilities.remove("8.6")
if nvcc_cuda_version < Version("11.8"):
compute_capabilities.remove("8.9")
compute_capabilities.remove("9.0")
# Validate the NVCC CUDA version.
if nvcc_cuda_version < Version("11.0"):
raise RuntimeError("CUDA 11.0 or higher is required to build the package.")
if (nvcc_cuda_version < Version("11.1")
and any(cc.startswith("8.6") for cc in compute_capabilities)):
raise RuntimeError(
"CUDA 11.1 or higher is required for compute capability 8.6.")
if nvcc_cuda_version < Version("11.8"):
if any(cc.startswith("8.9") for cc in compute_capabilities):
# CUDA 11.8 is required to generate the code targeting compute capability 8.9.
# However, GPUs with compute capability 8.9 can also run the code generated by
# the previous versions of CUDA 11 and targeting compute capability 8.0.
# Therefore, if CUDA 11.8 is not available, we target compute capability 8.0
# instead of 8.9.
warnings.warn(
"CUDA 11.8 or higher is required for compute capability 8.9. "
"Targeting compute capability 8.0 instead.",
stacklevel=2)
compute_capabilities = set(cc for cc in compute_capabilities
if not cc.startswith("8.9"))
compute_capabilities.add("8.0+PTX")
if any(cc.startswith("9.0") for cc in compute_capabilities):
raise RuntimeError(
"CUDA 11.8 or higher is required for compute capability 9.0.")
# Add target compute capabilities to NVCC flags.
for capability in compute_capabilities:
num = capability[0] + capability[2]
NVCC_FLAGS += ["-gencode", f"arch=compute_{num},code=sm_{num}"]
if capability.endswith("+PTX"):
NVCC_FLAGS += ["-gencode", f"arch=compute_{num},code=compute_{num}"]
# Use NVCC threads to parallelize the build.
if nvcc_cuda_version >= Version("11.2"):
num_threads = min(os.cpu_count(), 8)
NVCC_FLAGS += ["--threads", str(num_threads)]
ext_modules = []
vllm_extension = CUDAExtension(
name="vllm._C",
sources=[
"csrc/cache_kernels.cu",
"csrc/attention/attention_kernels.cu",
"csrc/pos_encoding_kernels.cu",
"csrc/activation_kernels.cu",
"csrc/layernorm_kernels.cu",
"csrc/quantization/awq/gemm_kernels.cu",
"csrc/quantization/squeezellm/quant_cuda_kernel.cu",
"csrc/cuda_utils_kernels.cu",
"csrc/pybind.cpp",
],
extra_compile_args={
"cxx": CXX_FLAGS,
"nvcc": NVCC_FLAGS,
},
)
ext_modules.append(vllm_extension)
def get_path(*filepath) -> str:
return os.path.join(ROOT_DIR, *filepath)
def find_version(filepath: str) -> str:
"""Extract version information from the given filepath.
Adapted from https://github.com/ray-project/ray/blob/0b190ee1160eeca9796bc091e07eaebf4c85b511/python/setup.py
"""
with open(filepath) as fp:
version_match = re.search(r"^__version__ = ['\"]([^'\"]*)['\"]",
fp.read(), re.M)
if version_match:
return version_match.group(1)
raise RuntimeError("Unable to find version string.")
def get_vllm_version() -> str:
version = find_version(get_path("vllm", "__init__.py"))
cuda_version = str(nvcc_cuda_version)
if cuda_version != MAIN_CUDA_VERSION:
cuda_version_str = cuda_version.replace(".", "")[:3]
version += f"+cu{cuda_version_str}"
return version
def read_readme() -> str:
"""Read the README file if present."""
p = get_path("README.md")
if os.path.isfile(p):
return io.open(get_path("README.md"), "r", encoding="utf-8").read()
else:
return ""
def get_requirements() -> List[str]:
"""Get Python package dependencies from requirements.txt."""
with open(get_path("requirements.txt")) as f:
requirements = f.read().strip().split("\n")
return requirements
setuptools.setup(
name="vllm",
version=get_vllm_version(),
author="vLLM Team",
license="Apache 2.0",
description=("A high-throughput and memory-efficient inference and "
"serving engine for LLMs"),
long_description=read_readme(),
long_description_content_type="text/markdown",
url="https://github.com/vllm-project/vllm",
project_urls={
"Homepage": "https://github.com/vllm-project/vllm",
"Documentation": "https://vllm.readthedocs.io/en/latest/",
},
classifiers=[
"Programming Language :: Python :: 3.8",
"Programming Language :: Python :: 3.9",
"Programming Language :: Python :: 3.10",
"Programming Language :: Python :: 3.11",
"License :: OSI Approved :: Apache Software License",
"Topic :: Scientific/Engineering :: Artificial Intelligence",
],
packages=setuptools.find_packages(exclude=("benchmarks", "csrc", "docs",
"examples", "tests")),
python_requires=">=3.8",
install_requires=get_requirements(),
ext_modules=ext_modules,
cmdclass={"build_ext": BuildExtension},
package_data={"vllm": ["py.typed"]},
)