36 lines
1000 B
Python
36 lines
1000 B
Python
"""
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Platform detection for backend selection.
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"""
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import platform
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from typing import Literal
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def is_apple_silicon() -> bool:
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"""
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Check if running on Apple Silicon (arm64 macOS).
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Returns:
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True if on Apple Silicon, False otherwise
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"""
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return platform.system() == "Darwin" and platform.machine() == "arm64"
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def get_backend_type() -> Literal["mlx", "pytorch"]:
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"""
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Detect the best backend for the current platform.
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Returns:
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"mlx" on Apple Silicon (if MLX is available and functional), "pytorch" otherwise
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"""
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if is_apple_silicon():
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try:
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import mlx.core # noqa: F401 — triggers native lib loading
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return "mlx"
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except (ImportError, OSError, RuntimeError):
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# MLX not installed, or native libraries failed to load inside a
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# PyInstaller bundle (OSError on missing .dylib / .metallib).
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# Fall through to PyTorch.
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return "pytorch"
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return "pytorch"
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