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## VRAM Detection (model_management.py) The DirectML code path had two hardcoded `1024 * 1024 * 1024 #TODO` values in `get_total_memory()` and `get_free_memory()`, causing ComfyUI to report only 1 GB of VRAM on any AMD/Intel GPU using the DirectML backend — regardless of actual hardware. This forced NORMAL_VRAM or LOW_VRAM calculations to be wildly wrong. Fix for `get_total_memory`: - On Windows, reads `HardwareInformation.qwMemorySize` from the GPU driver registry key via `winreg`. This is the 64-bit accurate value (unlike `Win32_VideoController.AdapterRAM` which overflows at 4 GB). - Allows override via `COMFYUI_DIRECTML_VRAM_MB` env var. - Falls back to 6 GB if registry query fails (safe default for modern dGPUs). Fix for `get_free_memory`: - Uses `torch_directml.gpu_memory(0)` to get per-tile usage fractions and derives free memory as `total * (1 - max_usage_fraction)`. ## torchaudio: optional import on AMD/DirectML torchaudio has a DLL incompatibility with torch-directml (which ships its own torch runtime). The following files had bare `import torchaudio` at module level, crashing ComfyUI startup entirely when torchaudio was absent: - comfy/ldm/lightricks/vae/audio_vae.py - comfy/audio_encoders/whisper.py - comfy/audio_encoders/audio_encoders.py - comfy_extras/nodes_audio.py - comfy_extras/nodes_lt.py - comfy_extras/nodes_wandancer.py Each import is wrapped in `try/except (ImportError, OSError): torchaudio = None`, matching the pattern already used in comfy/ldm/mmaudio/vae/autoencoder.py and comfy/ldm/ace/vae/music_dcae_pipeline.py. Audio nodes will degrade gracefully rather than preventing ComfyUI from starting. Tested on: AMD Radeon RX 5600 XT (6 GB VRAM, gfx1010, Windows 10) Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com> |
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| .. | ||
| audio_vae.py | ||
| causal_audio_autoencoder.py | ||
| causal_conv3d.py | ||
| causal_video_autoencoder.py | ||
| conv_nd_factory.py | ||
| dual_conv3d.py | ||
| pixel_norm.py | ||