0dcbb7a722
Torch - 2.6.0 ExllamaV2 - 0.2.8 Flash-attn - 2.7.4.post1 Cuda wheels are now 12.4 instead of 12.1, feature names need to be migrated over. Signed-off-by: kingbri <8082010+kingbri1@users.noreply.github.com>
84 lines
2.7 KiB
Python
84 lines
2.7 KiB
Python
import platform
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import torch
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from packaging import version
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from importlib.metadata import PackageNotFoundError, version as package_version
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from loguru import logger
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def hardware_supports_flash_attn(gpu_device_list: list[int]):
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"""
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Check whether all GPUs in list support FA2
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Compute capability < 8 is not supported by FA2
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AMD is also unsupported until ROCm updates its FA2 fork
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"""
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# Logged message if unsupported
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unsupported_message = (
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"An unsupported GPU is found in this configuration. "
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"Switching to compatibility mode. \n"
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"This disables parallel batching "
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"and features that rely on it (ex. CFG). \n"
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"To disable compatability mode, all GPUs must be ampere "
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"(30 series) or newer. AMD GPUs are not supported."
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)
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min_compute_capability = min(
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torch.cuda.get_device_capability(device=device_idx)[0]
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for device_idx in gpu_device_list
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)
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if torch.version.hip or min_compute_capability < 8:
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logger.warning(unsupported_message)
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return False
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else:
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return True
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def supports_paged_attn():
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"""Check whether the user's flash-attn version supports paged mode"""
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# Logged message if unsupported
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unsupported_message = (
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"Flash attention version >=2.5.7 "
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"is required to use paged attention. "
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"Switching to compatibility mode. \n"
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"This disables parallel batching "
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"and features that rely on it (ex. CFG). \n"
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"Please upgrade your environment by running an update script "
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"(update_scripts/"
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f"update_deps.{'bat' if platform.system() == 'Windows' else 'sh'})\n\n"
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"Or you can manually run a requirements update "
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"using the following command:\n\n"
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"For CUDA 12.1:\n"
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"pip install --upgrade .[cu121]\n\n"
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"NOTE: Windows users must use CUDA 12.x to use flash-attn."
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)
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required_version = version.parse("2.5.7")
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try:
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current_version = version.parse(package_version("flash-attn").split("+")[0])
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except PackageNotFoundError:
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logger.warning(unsupported_message)
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return False
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if current_version < required_version:
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logger.warning(unsupported_message)
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return False
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else:
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return True
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def exllama_disabled_flash_attn(no_flash_attn: bool):
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unsupported_message = (
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"ExllamaV2 has disabled Flash Attention. \n"
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"Please see the above logs for warnings/errors. \n"
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"Switching to compatibility mode. \n"
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"This disables parallel batching "
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"and features that rely on it (ex. CFG). \n"
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)
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if no_flash_attn:
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logger.warning(unsupported_message)
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return no_flash_attn
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