mirror of
https://github.com/theroyallab/tabbyAPI.git
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156b74f3f0
* Model: Clean up paged attention checks * Model: Move cache_size checks after paged attn checks Cache size is only relevant in paged mode * Model: Fix no_flash_attention * Model: Remove no_flash_attention Ability to use flash attention is auto-detected, so this flag is unneeded. Uninstall flash attention to disable it on supported hardware.
63 lines
1.9 KiB
Python
63 lines
1.9 KiB
Python
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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import torch
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def check_exllama_version():
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"""Verifies the exllama version"""
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required_version = version.parse("0.1.5")
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current_version = version.parse(package_version("exllamav2").split("+")[0])
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if current_version < required_version:
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raise SystemExit(
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f"ERROR: TabbyAPI requires ExLlamaV2 {required_version} "
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f"or greater. Your current version is {current_version}.\n"
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"Please upgrade your environment by running a start script "
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"(start.bat or start.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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"For CUDA 11.8:\n"
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"pip install --upgrade .[cu118]\n\n"
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"For ROCm:\n"
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"pip install --upgrade .[amd]\n\n"
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)
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else:
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logger.info(f"ExllamaV2 version: {current_version}")
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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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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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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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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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return False
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if current_version < required_version:
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return False
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else:
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return True
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