forked from mrq/bitsandbytes-rocm
48 lines
1.4 KiB
Python
48 lines
1.4 KiB
Python
import ctypes as ct
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import os
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from warnings import warn
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from bitsandbytes.cuda_setup import evaluate_cuda_setup
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class CUDALibrary_Singleton(object):
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_instance = None
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def __init__(self):
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raise RuntimeError("Call get_instance() instead")
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def initialize(self):
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self.context = {}
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binary_name = evaluate_cuda_setup()
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if not os.path.exists(os.path.dirname(__file__) + f"/{binary_name}"):
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print(f"TODO: compile library for specific version: {binary_name}")
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print("defaulting to libbitsandbytes.so")
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self.lib = ct.cdll.LoadLibrary(
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os.path.dirname(__file__) + "/libbitsandbytes.so"
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)
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else:
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self.lib = ct.cdll.LoadLibrary(
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os.path.dirname(__file__) + f"/{binary_name}"
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)
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@classmethod
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def get_instance(cls):
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if cls._instance is None:
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cls._instance = cls.__new__(cls)
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cls._instance.initialize()
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return cls._instance
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lib = CUDALibrary_Singleton.get_instance().lib
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try:
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lib.cadam32bit_g32
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lib.get_context.restype = ct.c_void_p
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lib.get_cusparse.restype = ct.c_void_p
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COMPILED_WITH_CUDA = True
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except AttributeError:
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warn(
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"The installed version of bitsandbytes was compiled without GPU support. "
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"8-bit optimizers and GPU quantization are unavailable."
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)
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COMPILED_WITH_CUDA = False
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