setup.py

#!/usr/bin/env python
# coding=utf-8
'''
Description  :
Author       : chenxl
Date         : 2024-07-27 16:15:27
Version      : 1.0.0
LastEditors  : chenxl
LastEditTime : 2024-08-14 16:36:19
Adapted from:
https://github.com/Dao-AILab/flash-attention/blob/v2.6.3/setup.py
Copyright (c) 2023, Tri Dao.
Copyright (c) 2024 by KVCache.AI, All Rights Reserved.
'''

import os
import sys
import re
import ast
from collections import deque
import subprocess
import select
import time
import platform
import shutil
from typing import List, Optional, Literal
import http.client
import urllib.request
import urllib.error
from pathlib import Path
from packaging.version import parse
import torch
import torch.version
from wheel.bdist_wheel import bdist_wheel as _bdist_wheel
from setuptools import setup, Extension
from torch.utils.cpp_extension import BuildExtension, CUDAExtension, CUDA_HOME, ROCM_HOME
try:
    from torch_musa.utils.simple_porting import SimplePorting
    from torch_musa.utils.musa_extension import BuildExtension, MUSAExtension, MUSA_HOME
except ImportError:
    MUSA_HOME=None
KTRANSFORMERS_BUILD_XPU = torch.xpu.is_available()

# 检测 DEV_BACKEND 环境变量
dev_backend = os.environ.get("DEV_BACKEND", "").lower()
if dev_backend == "xpu":
    triton_dep = [
        "pytorch-triton-xpu==3.3.0"
    ]
else:
    triton_dep = ["triton>=3.2"]

with_balance = os.environ.get("USE_BALANCE_SERVE", "0") == "1"

class CpuInstructInfo:
    CPU_INSTRUCT = os.getenv("CPU_INSTRUCT", "NATIVE")
    FANCY = "FANCY"
    AVX512 = "AVX512"
    AVX2 = "AVX2"
    CMAKE_NATIVE = "-DLLAMA_NATIVE=ON"
    CMAKE_FANCY = "-DLLAMA_NATIVE=OFF -DLLAMA_FMA=ON -DLLAMA_F16C=ON -DLLAMA_AVX=ON -DLLAMA_AVX2=ON -DLLAMA_AVX512=ON -DLLAMA_AVX512_FANCY_SIMD=ON"
    CMAKE_AVX512 = "-DLLAMA_NATIVE=OFF -DLLAMA_FMA=ON -DLLAMA_F16C=ON -DLLAMA_AVX=ON -DLLAMA_AVX2=ON -DLLAMA_AVX512=ON"
    CMAKE_AVX2 = "-DLLAMA_NATIVE=OFF -DLLAMA_FMA=ON -DLLAMA_F16C=ON -DLLAMA_AVX=ON -DLLAMA_AVX2=ON"

class VersionInfo:
    THIS_DIR = os.path.dirname(os.path.abspath(__file__))
    PACKAGE_NAME = "ktransformers"
    BASE_WHEEL_URL:str = (
        "https://github.com/kvcache-ai/ktransformers/releases/download/{tag_name}/{wheel_filename}"
    )
    FORCE_BUILD = os.getenv("KTRANSFORMERS_FORCE_BUILD", "FALSE") == "TRUE"

    def get_musa_bare_metal_version(self, musa_dir):
        raw_output = subprocess.run(
            [musa_dir + "/bin/mcc", "-v"], check=True,
            stdout=subprocess.PIPE, stderr=subprocess.STDOUT).stdout.decode("utf-8")
        output = raw_output.split()
        release_idx = output.index("version") + 1
        bare_metal_version = parse(output[release_idx].split(",")[0])
        musa_version = f"{bare_metal_version.major}{bare_metal_version.minor}"
        return musa_version

    def get_rocm_bare_metal_version(self, rocm_dir):
        """
        Get the ROCm version from the ROCm installation directory.

        Args:
            rocm_dir: Path to the ROCm installation directory

        Returns:
            A string representation of the ROCm version (e.g., "63" for ROCm 6.3)
        """
        try:
            # Try using rocm_agent_enumerator to get version info
            raw_output = subprocess.check_output(
                [rocm_dir + "/bin/rocminfo", "--version"],
                universal_newlines=True,
                stderr=subprocess.STDOUT)
            # Extract version number from output
            match = re.search(r'(\d+\.\d+)', raw_output)
            if match:
                version_str = match.group(1)
                version = parse(version_str)
                rocm_version = f"{version.major}{version.minor}"
                return rocm_version
        except (subprocess.CalledProcessError, FileNotFoundError):
            # If rocminfo --version fails, try alternative methods
            pass

        try:
            # Try reading version from release file
            with open(os.path.join(rocm_dir, "share/doc/hip/version.txt"), "r") as f:
                version_str = f.read().strip()
                version = parse(version_str)
                rocm_version = f"{version.major}{version.minor}"
                return rocm_version
        except (FileNotFoundError, IOError):
            pass

        # If all else fails, try to extract from directory name
        dir_name = os.path.basename(os.path.normpath(rocm_dir))
        match = re.search(r'rocm-(\d+\.\d+)', dir_name)
        if match:
            version_str = match.group(1)
            version = parse(version_str)
            rocm_version = f"{version.major}{version.minor}"
            return rocm_version

        # Fallback to extracting from hipcc version
        try:
            raw_output = subprocess.check_output(
                [rocm_dir + "/bin/hipcc", "--version"],
                universal_newlines=True,
                stderr=subprocess.STDOUT)
            match = re.search(r'HIP version: (\d+\.\d+)', raw_output)
            if match:
                version_str = match.group(1)
                version = parse(version_str)
                rocm_version = f"{version.major}{version.minor}"
                return rocm_version
        except (subprocess.CalledProcessError, FileNotFoundError):
            pass

        # If we still can't determine the version, raise an error
        raise ValueError(f"Could not determine ROCm version from directory: {rocm_dir}")

    def get_cuda_bare_metal_version(self, cuda_dir):
        raw_output = subprocess.check_output(
            [cuda_dir + "/bin/nvcc", "-V"], universal_newlines=True)
        output = raw_output.split()
        release_idx = output.index("release") + 1
        bare_metal_version = parse(output[release_idx].split(",")[0])
        cuda_version = f"{bare_metal_version.major}{bare_metal_version.minor}"
        return cuda_version

    def get_cuda_version_of_torch(self):
        torch_cuda_version = parse(torch.version.cuda)
        cuda_version = f"{torch_cuda_version.major}{torch_cuda_version.minor}"
        return cuda_version

    def get_platform(self,):
        """
        Returns the platform name as used in wheel filenames.
        """
        if sys.platform.startswith("linux"):
            return f'linux_{platform.uname().machine}'
        elif sys.platform == "win32":
            return "win_amd64"
        else:
            raise ValueError("Unsupported platform: {}".format(sys.platform))

    def get_cpu_instruct(self,):
        if CpuInstructInfo.CPU_INSTRUCT == CpuInstructInfo.FANCY:
            return "fancy"
        elif CpuInstructInfo.CPU_INSTRUCT == CpuInstructInfo.AVX512:
            return "avx512"
        elif CpuInstructInfo.CPU_INSTRUCT == CpuInstructInfo.AVX2:
            return "avx2"
        else:
            print("Using native cpu instruct")
        if sys.platform.startswith("linux"):
            with open('/proc/cpuinfo', 'r', encoding="utf-8") as cpu_f:
                cpuinfo = cpu_f.read()
            flags_line = [line for line in cpuinfo.split(
                '\n') if line.startswith('flags')][0]
            flags = flags_line.split(':')[1].strip().split(' ')
            # fancy with AVX512-VL, AVX512-BW, AVX512-DQ, AVX512-VNNI
            for flag in flags:
                if 'avx512bw' in flag:
                    return 'fancy'
            for flag in flags:
                if 'avx512' in flag:
                    return 'avx512'
            for flag in flags:
                if 'avx2' in flag:
                    return 'avx2'
            raise ValueError(
                "Unsupported cpu Instructions: {}".format(flags_line))
        elif sys.platform == "win32":
            from cpufeature.extension import CPUFeature

            if CPUFeature.get("AVX512bw", False):
                return 'fancy'
            if CPUFeature.get("AVX512f", False):
                return 'avx512'
            if CPUFeature.get("AVX2", False):
                return 'avx2'
            raise ValueError(
                "Unsupported cpu Instructions: {}".format(str(CPUFeature)))
        else:
            raise ValueError("Unsupported platform: {}".format(sys.platform))

    def get_torch_version(self,):
        torch_version_raw = parse(torch.__version__)
        torch_version = f"{torch_version_raw.major}{torch_version_raw.minor}"
        return torch_version

    def get_flash_version(self,):
        version_file = os.path.join(
            Path(VersionInfo.THIS_DIR), VersionInfo.PACKAGE_NAME, "__init__.py")
        with open(version_file, "r", encoding="utf-8") as f:
            version_match = re.search(
                r"^__version__\s*=\s*(.*)$", f.read(), re.MULTILINE)
        flash_version = ast.literal_eval(version_match.group(1))
        return flash_version

    def get_package_version(self, full_version=False):
        flash_version = str(self.get_flash_version())
        torch_version = self.get_torch_version()
        cpu_instruct = self.get_cpu_instruct()
        backend_version = ""
        if CUDA_HOME is not None:
            backend_version = f"cu{self.get_cuda_bare_metal_version(CUDA_HOME)}"
        elif MUSA_HOME is not None:
            backend_version = f"mu{self.get_musa_bare_metal_version(MUSA_HOME)}"
        elif ROCM_HOME is not None:
            backend_version = f"rocm{self.get_rocm_bare_metal_version(ROCM_HOME)}"
        elif torch.xpu.is_available():
            backend_version = f"xpu"
        else:
            raise ValueError("Unsupported backend: CUDA_HOME MUSA_HOME ROCM_HOME all not set and XPU is not available.")
        package_version = f"{flash_version}+{backend_version}torch{torch_version}{cpu_instruct}"
        if full_version:
            return package_version
        if not VersionInfo.FORCE_BUILD:
            return flash_version
        return package_version


class BuildWheelsCommand(_bdist_wheel):
    def get_wheel_name(self,):
        version_info = VersionInfo()
        package_version = version_info.get_package_version(full_version=True)
        flash_version = version_info.get_flash_version()
        python_version = f"cp{sys.version_info.major}{sys.version_info.minor}"
        wheel_filename = f"{VersionInfo.PACKAGE_NAME}-{package_version}-{python_version}-{python_version}-{version_info.get_platform()}.whl"
        wheel_url = VersionInfo.BASE_WHEEL_URL.format(tag_name=f"v{flash_version}", wheel_filename=wheel_filename)
        return wheel_filename, wheel_url


    def run(self):
        if VersionInfo.FORCE_BUILD:
            super().run()
            return
        wheel_filename, wheel_url = self.get_wheel_name()
        print("Guessing wheel URL: ", wheel_url)
        try:
            urllib.request.urlretrieve(wheel_url, wheel_filename)
            # Make the archive
            # Lifted from the root wheel processing command
            # https://github.com/pypa/wheel/blob/cf71108ff9f6ffc36978069acb28824b44ae028e/src/wheel/bdist_wheel.py#LL381C9-L381C85
            if not os.path.exists(self.dist_dir):
                os.makedirs(self.dist_dir)

            impl_tag, abi_tag, plat_tag = self.get_tag()
            archive_basename = f"{self.wheel_dist_name}-{impl_tag}-{abi_tag}-{plat_tag}"

            wheel_path = os.path.join(self.dist_dir, archive_basename + ".whl")
            print("Raw wheel path", wheel_path)
            shutil.move(wheel_filename, wheel_path)
        except (urllib.error.HTTPError, urllib.error.URLError, http.client.RemoteDisconnected):
            print("Precompiled wheel not found. Building from source...")
            # If the wheel could not be downloaded, build from source
            super().run()


ANSI_ESCAPE = re.compile(
    r'\033[@-Z\\-_\[\]P]|\033\[[0-?]*[ -/]*[@-~]|\033][^\007\033]*\007|[\000-\037]'
)

def colored(text, color=None, bold=False):
    fmt = []
    if color== 'red':
        fmt.append('31')
    elif color == 'green':
        fmt.append('32')
    if bold:
        fmt.append('1')

    return f"\033[{';'.join(fmt)}m{text}\033[0m"


def split_line(text: str) -> List[str]:
    """Split text into lines based on terminal width."""
    term_width = shutil.get_terminal_size().columns or 80
    if not text.strip():
        return []
    # Split by explicit newlines and wrap long lines
    lines = []
    for line in text.split('\n'):
        while len(line) > term_width:
            lines.append(line[:term_width])
            line = line[term_width:]
        if line:
            lines.append(line)
    return lines



ANSI_ESCAPE = re.compile(
    r'\033[@-Z\\-_\[\]P]|\033\[[0-?]*[ -/]*[@-~]|\033][^\007\033]*\007|[\000-\037]'
)

def colored(text, color=None, bold=False):
    fmt = []
    if color== 'red':
        fmt.append('31')
    elif color == 'green':
        fmt.append('32')
    if bold:
        fmt.append('1')

    return f"\033[{';'.join(fmt)}m{text}\033[0m"


def split_line(text: str) -> List[str]:
    """Split text into lines based on terminal width."""
    term_width = shutil.get_terminal_size().columns or 80
    if not text.strip():
        return []
    # Split by explicit newlines and wrap long lines
    lines = []
    for line in text.split('\n'):
        while len(line) > term_width:
            lines.append(line[:term_width])
            line = line[term_width:]
        if line:
            lines.append(line)
    return lines


def run_command_with_live_tail(ext: str, command: List[str], output_lines: int = 20,
                               refresh_rate: float = 0.1, cwd: Optional[str] = None):
    """
    Execute a script-like command with real-time output of the last `output_lines` lines.

    - during execution: displays the last `output_lines` lines of output in real-time.
    - On success: Clears the displayed output.
    - On failure: Prints the full command output.

    Args:
        ext (str): the name of the native extension currently building.
        command (List[str]): The command to execute, as a list of arguments.
        output_lines (int, optional): Number of terminal lines to display during live output. Defaults to 20.
        refresh_rate (float, optional): Time in seconds between output refreshes. Defaults to 0.1.
        cwd (Optional[str], optional): Working directory to run the command in. Defaults to current directory.
    """
    # Dump all subprocess output without any buffering if stdout is not a terminal
    if not sys.stdout.isatty():
        return subprocess.run(command, cwd=cwd, check=True)
    # Start time for elapsed time calculation
    start = time.time()
    # Buffer for all output
    all_output = []
    write_buffer = deque(maxlen=output_lines)
    # Current number of lines from sub process displayed
    current_lines = 0

    # ANSI escape codes for terminal control
    CLEAR_LINE = '\033[K'
    MOVE_UP = '\033[1A'
    SAVE_CURSOR = '\0337'
    RESTORE_CURSOR = '\0338'
    CLEAR_REMAINING = '\033[J'

    def write_progress(status: Literal['RUNNING', 'SUCCEED', 'FAILED'] = 'RUNNING',
                       new_line: Optional[str] = None):
        """Update terminal display with latest output"""
        nonlocal current_lines, process
        sys.stdout.write(SAVE_CURSOR)
        sys.stdout.write(MOVE_UP * current_lines)
        banner = f"ext={ext} pid={process.pid} status={status.upper()} elapsed=({time.time()-start:.2f}S)\n"
        if status != 'FAILED':
            banner = colored(banner, 'green', bold=True)
        else:
            banner = colored(banner, 'red', bold=True)
        sys.stdout.write(CLEAR_LINE + banner)
        if new_line is not None:
            all_output.append(new_line)
            write_buffer.extend(split_line(ANSI_ESCAPE.sub('', new_line).rstrip()))
        elif status == 'RUNNING':
            sys.stdout.write(RESTORE_CURSOR)
            sys.stdout.flush()
            return

        sys.stdout.write(CLEAR_REMAINING)
        if status == 'RUNNING':
            current_lines = 1 + len(write_buffer)
            for text in write_buffer:
                sys.stdout.write(text + '\n')
        elif status == 'FAILED':
            for text in all_output:
                sys.stdout.write(text)
        sys.stdout.flush()

    # Start subprocess
    sys.stdout.write(colored(f'ext={ext} command={" ".join(str(c) for c in command)}\n', bold=True))
    sys.stdout.flush()
    process = subprocess.Popen(
        command,
        stdout=subprocess.PIPE,
        stderr=subprocess.STDOUT,
        cwd=cwd,
        text=True,
        bufsize=1
    )

    try:
        write_progress()
        poll_obj = select.poll()
        poll_obj.register(process.stdout, select.POLLIN)
        while process.poll() is None:
            poll_result = poll_obj.poll(refresh_rate * 1000)
            if poll_result:
                write_progress(new_line=process.stdout.readline())
            else:
                write_progress()

        # Get any remaining output
        while True:
            line = process.stdout.readline()
            if not line:
                break
            write_progress(new_line=line)
    except BaseException as e:
        process.terminate()
        raise e
    finally:
        exit_code = process.wait()
        write_progress(status='SUCCEED' if exit_code == 0 else 'FAILED')


# Convert distutils Windows platform specifiers to CMake -A arguments
PLAT_TO_CMAKE = {
    "win32": "Win32",
    "win-amd64": "x64",
    "win-arm32": "ARM",
    "win-arm64": "ARM64",
}


class CMakeExtension(Extension):
    def __init__(self, name: str, sourcedir: str) -> None:
        super().__init__(name, sources=[])
        print(name, sourcedir)
        self.sourcedir = sourcedir

def get_cmake_abi_args(cmake_args):
    if torch.compiled_with_cxx11_abi():
        cmake_args.append("-D_GLIBCXX_USE_CXX11_ABI=1")
    else:
        cmake_args.append("-D_GLIBCXX_USE_CXX11_ABI=0")
    return cmake_args

class CMakeBuild(BuildExtension):

    def build_extension(self, ext) -> None:
        if not isinstance(ext, CMakeExtension):
            super().build_extension(ext)
            return
        ext_fullpath = Path.cwd() / self.get_ext_fullpath(ext.name)
        extdir = ext_fullpath.parent.resolve()

        # Using this requires trailing slash for auto-detection & inclusion of
        # auxiliary "native" libs

        debug = int(os.environ.get("DEBUG", 0)
                    ) if self.debug is None else self.debug
        cfg = "Debug" if debug else "Release"

        # CMake lets you override the generator - we need to check this.
        # Can be set with Conda-Build, for example.
        cmake_generator = os.environ.get("CMAKE_GENERATOR", "")

        # Set Python_EXECUTABLE instead if you use PYBIND11_FINDPYTHON
        # EXAMPLE_VERSION_INFO shows you how to pass a value into the C++ code
        # from Python.
        cmake_args = [
            f"-DCMAKE_LIBRARY_OUTPUT_DIRECTORY={extdir}{os.sep}",
            f"-DPYTHON_EXECUTABLE={sys.executable}",
            f"-DCMAKE_BUILD_TYPE={cfg}",  # not used on MSVC, but no harm
        ]

        if CUDA_HOME is not None:
            cmake_args += ["-DKTRANSFORMERS_USE_CUDA=ON"]
        elif MUSA_HOME is not None:
            cmake_args += ["-DKTRANSFORMERS_USE_MUSA=ON"]
        elif ROCM_HOME is not None:
            cmake_args += ["-DKTRANSFORMERS_USE_ROCM=ON"]
        elif KTRANSFORMERS_BUILD_XPU:
            cmake_args += ["-DKTRANSFORMERS_USE_XPU=ON", "-DKTRANSFORMERS_USE_CUDA=OFF"]
        else:
            raise ValueError("Unsupported backend: CUDA_HOME, MUSA_HOME, and ROCM_HOME are not set and XPU is not available.")
        
        cmake_args = get_cmake_abi_args(cmake_args)
        # log cmake_args
        print("CMake args:", cmake_args)

        build_args = []
        if "CMAKE_ARGS" in os.environ:
            cmake_args += [
                item for item in os.environ["CMAKE_ARGS"].split(" ") if item]

        if CpuInstructInfo.CPU_INSTRUCT == CpuInstructInfo.FANCY:
            cpu_args = CpuInstructInfo.CMAKE_FANCY
        elif CpuInstructInfo.CPU_INSTRUCT == CpuInstructInfo.AVX512:
            cpu_args = CpuInstructInfo.CMAKE_AVX512
        elif CpuInstructInfo.CPU_INSTRUCT == CpuInstructInfo.AVX2:
            cpu_args = CpuInstructInfo.CMAKE_AVX2
        else:
            cpu_args = CpuInstructInfo.CMAKE_NATIVE

        cmake_args += [
            item for item in cpu_args.split(" ") if item
        ]
        # In this example, we pass in the version to C++. You might not need to.
        cmake_args += [
            f"-DEXAMPLE_VERSION_INFO={self.distribution.get_version()}"]
        if self.compiler.compiler_type != "msvc":
            if not cmake_generator or cmake_generator == "Ninja":
                pass
                # try:
                #     import ninja

                #     ninja_executable_path = Path(ninja.BIN_DIR) / "ninja"
                #     cmake_args += [
                #         "-GNinja",
                #         f"-DCMAKE_MAKE_PROGRAM:FILEPATH={ninja_executable_path}",
                #     ]
                # except ImportError:
                #     pass

        else:
            # Single config generators are handled "normally"
            single_config = any(
                x in cmake_generator for x in {"NMake", "Ninja"})

            # CMake allows an arch-in-generator style for backward compatibility
            contains_arch = any(x in cmake_generator for x in {"ARM", "Win64"})
            if not single_config and not contains_arch and cmake_generator:
                cmake_args += ["-A", PLAT_TO_CMAKE[self.plat_name]]

            # Multi-config generators have a different way to specify configs
            if not single_config:
                cmake_args += [
                    f"-DCMAKE_LIBRARY_OUTPUT_DIRECTORY_{cfg.upper()}={extdir}"
                ]
                build_args += ["--config", cfg]

        if sys.platform.startswith("darwin"):
            # Cross-compile support for macOS - respect ARCHFLAGS if set
            archs = re.findall(r"-arch (\S+)", os.environ.get("ARCHFLAGS", ""))
            if archs:
                cmake_args += [
                    "-DCMAKE_OSX_ARCHITECTURES={}".format(";".join(archs))]

        if "CMAKE_BUILD_PARALLEL_LEVEL" not in os.environ:
            cpu_count = os.cpu_count()
            if cpu_count is None:
                cpu_count = 1
            if hasattr(self, "parallel") and self.parallel:
                build_args += [f"--parallel={self.parallel}"]
            else:
                build_args += [f"--parallel={cpu_count}"]
        print("CMake args:", cmake_args)
        build_temp = Path(ext.sourcedir) / "build"
        print("build_temp:", build_temp)

        if not build_temp.exists():
            build_temp.mkdir(parents=True)
        run_command_with_live_tail(ext.name,
            ["cmake", ext.sourcedir, *cmake_args], cwd=build_temp
        )
        run_command_with_live_tail(ext.name,
            ["cmake", "--build", build_temp, "--verbose", *build_args], cwd=build_temp
        )

if CUDA_HOME is not None or ROCM_HOME is not None:
    ops_module = CUDAExtension('KTransformersOps', [
        'csrc/ktransformers_ext/cuda/custom_gguf/dequant.cu',
        'csrc/ktransformers_ext/cuda/binding.cpp',
        'csrc/ktransformers_ext/cuda/gptq_marlin/gptq_marlin.cu'
    ],
    extra_compile_args={
            'cxx': ['-O3', '-DKTRANSFORMERS_USE_CUDA'],
            'nvcc': [
                '-O3',
                # '--use_fast_math',
                '-Xcompiler', '-fPIC',
                '-DKTRANSFORMERS_USE_CUDA',
            ]
        }
    )
elif MUSA_HOME is not None:
    SimplePorting(cuda_dir_path="csrc/ktransformers_ext/cuda", mapping_rule={
        # Common rules
        "at::cuda": "at::musa",
        "#include <ATen/cuda/CUDAContext.h>": "#include \"torch_musa/csrc/aten/musa/MUSAContext.h\"",
        "#include <c10/cuda/CUDAGuard.h>": "#include \"torch_musa/csrc/core/MUSAGuard.h\"",
        "nv_bfloat16": "mt_bfloat16",
        }).run()
    ops_module = MUSAExtension('KTransformersOps', [
        'csrc/ktransformers_ext/cuda_musa/custom_gguf/dequant.mu',
        'csrc/ktransformers_ext/cuda_musa/binding.cpp',
        # TODO: Add Marlin support for MUSA.
        # 'csrc/ktransformers_ext/cuda_musa/gptq_marlin/gptq_marlin.mu'
    ],
    extra_compile_args={
            'cxx': ['force_mcc'],
            'mcc': [
                '-O3',
                '-DKTRANSFORMERS_USE_MUSA',
                '-DTHRUST_IGNORE_CUB_VERSION_CHECK',
            ]
        }
    )
elif torch.xpu.is_available(): #XPUExtension is not available now.
    ops_module = None
else:
    raise ValueError("Unsupported backend: CUDA_HOME ROCM_HOME MUSA_HOME are not set and XPU is not available.")

if not torch.xpu.is_available():
    ext_modules = [
        CMakeExtension("cpuinfer_ext", os.fspath(Path("").resolve() / "csrc" / "ktransformers_ext")),
        ops_module,
        CUDAExtension(
            'vLLMMarlin', [
                'csrc/custom_marlin/binding.cpp',
                'csrc/custom_marlin/gptq_marlin/gptq_marlin.cu',
                'csrc/custom_marlin/gptq_marlin/gptq_marlin_repack.cu',
            ],
            extra_compile_args={
                'cxx': ['-O3'],
                'nvcc': ['-O3', '-Xcompiler', '-fPIC'],
            },
        )
    ]
    if with_balance:
        print("using balance_serve")
        ext_modules.append(
            CMakeExtension("balance_serve", os.fspath(Path("").resolve()/ "csrc"/ "balance_serve"))
        )
else:
    ext_modules = [
        CMakeExtension("cpuinfer_ext", os.fspath(Path("").resolve() / "csrc" / "ktransformers_ext")),
    ]

setup(
    name=VersionInfo.PACKAGE_NAME,
    version=VersionInfo().get_package_version(),
    install_requires=triton_dep,
    cmdclass={"bdist_wheel":BuildWheelsCommand ,"build_ext": CMakeBuild},
    ext_modules=ext_modules
)