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AshimandClaude Opus 4.6
39e27635c8
- Fix NameError in restore.py: face enhancement loop used undefined variable `i`, now uses enumerate() - Fix gpu.py ONNX fallback: previous smoke-test with empty bytes always raised, making GPU detection unreachable via the ONNX path. Now uses nvidia-smi hardware check after confirming CUDA EP is compiled in — works on Linux, Windows, and gracefully fails on macOS - Fix cpu_fallback_packages stripping CUDA-specific index URLs when replacing paddlepaddle-gpu with paddlepaddle for CPU-only systems Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
58 lines
2.2 KiB
Python
58 lines
2.2 KiB
Python
"""Runtime GPU/CUDA detection utility."""
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import functools
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import os
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import subprocess
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import sys
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@functools.lru_cache(maxsize=1)
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def gpu_available():
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"""Return True if a usable CUDA GPU is present at runtime."""
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# Allow explicit disable via env var (set to "false" or "0")
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override = os.environ.get("ASHIM_GPU")
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if override is not None and override.lower() in ("0", "false", "no"):
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return False
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# Use torch.cuda as the source of truth when available. It actually
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# probes the hardware. Fall back to onnxruntime provider detection
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# when torch is not installed (e.g. CPU-only images without PyTorch).
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try:
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import torch
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avail = torch.cuda.is_available()
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if avail:
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name = torch.cuda.get_device_name(0)
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print(f"[gpu] CUDA available via torch: {name}", file=sys.stderr, flush=True)
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else:
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print("[gpu] torch loaded but CUDA not available", file=sys.stderr, flush=True)
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return avail
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except ImportError as e:
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print(f"[gpu] torch not importable: {e}", file=sys.stderr, flush=True)
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# Fallback: check if onnxruntime-gpu is installed and CUDA EP is available,
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# then verify an actual NVIDIA GPU is present via nvidia-smi.
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try:
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import onnxruntime as _ort
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providers = _ort.get_available_providers()
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if "CUDAExecutionProvider" not in providers:
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return False
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# CUDA EP is compiled in — verify hardware is actually present.
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# nvidia-smi is the most reliable cross-platform check.
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result = subprocess.run(
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["nvidia-smi", "--query-gpu=name", "--format=csv,noheader"],
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capture_output=True, text=True, timeout=5,
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)
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if result.returncode == 0 and result.stdout.strip():
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print(f"[gpu] CUDA available via ONNX Runtime + nvidia-smi: {result.stdout.strip()}",
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file=sys.stderr, flush=True)
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return True
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return False
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except (ImportError, FileNotFoundError, subprocess.TimeoutExpired):
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return False
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def onnx_providers():
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"""Return ONNX Runtime execution providers in priority order."""
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if gpu_available():
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return ["CUDAExecutionProvider", "CPUExecutionProvider"]
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return ["CPUExecutionProvider"]
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