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fix: complete Intel XPU support — device-aware seeding, GPU status reporting, and setup detection

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Address CodeRabbit review feedback and user-reported GPU acceleration failure:

- Use shared manual_seed() in chatterbox, chatterbox_turbo, and luxtts
  backends so XPU (and future accelerators) get proper device seeding
- Add XPU branch to _get_gpu_status() so startup log reports Intel Arc
  GPUs instead of 'None (CPU only)'
- Add XPU VRAM reporting and correct backend_variant fallback in the
  /health endpoint
- Switch justfile GPU detection from Get-WmiObject to Get-CimInstance,
  simplify the Arc regex to match 'Arc' (not 'Intel.*Arc'), log
  detected GPUs, and print manual install instructions on miss

Resolves the root cause where IPEX was silently not installed due to
WMI detection failure, causing CPU-only fallback on Intel Arc systems.
This commit is contained in:
James Pine
2026-03-18 17:01:12 -07:00
parent 83ebababe7
commit 707046237c
6 changed files with 38 additions and 10 deletions
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justfile
+9 -2
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@@ -69,8 +69,10 @@ setup-python:
}
Write-Host "Installing Python dependencies..."
& "{{ python }}" -m pip install --upgrade pip -q
$hasNvidia = $null -ne (Get-WmiObject Win32_VideoController | Where-Object { $_.Name -match 'NVIDIA' })
$hasIntelArc = $null -ne (Get-WmiObject Win32_VideoController | Where-Object { $_.Name -match 'Intel.*Arc' })
$gpus = Get-CimInstance Win32_VideoController | Select-Object -ExpandProperty Name
Write-Host "Detected GPUs: $($gpus -join ', ')"
$hasNvidia = ($gpus | Where-Object { $_ -match 'NVIDIA' }).Count -gt 0
$hasIntelArc = ($gpus | Where-Object { $_ -match 'Arc' }).Count -gt 0
if ($hasNvidia) { \
Write-Host "NVIDIA GPU detected — installing PyTorch with CUDA support..."; \
& "{{ pip }}" install torch torchvision torchaudio --index-url https://download.pytorch.org/whl/cu128; \
@@ -78,6 +80,11 @@ setup-python:
Write-Host "Intel Arc GPU detected — installing PyTorch with XPU support..."; \
& "{{ pip }}" install torch torchvision torchaudio --index-url https://download.pytorch.org/whl/xpu; \
& "{{ pip }}" install intel-extension-for-pytorch --index-url https://download.pytorch.org/whl/xpu; \
} else { \
Write-Host "No NVIDIA or Intel Arc GPU detected — using CPU-only PyTorch."; \
Write-Host "If you have an Intel Arc GPU, install XPU support manually:"; \
Write-Host " pip install torch torchvision torchaudio --index-url https://download.pytorch.org/whl/xpu"; \
Write-Host " pip install intel-extension-for-pytorch --index-url https://download.pytorch.org/whl/xpu"; \
}
& "{{ pip }}" install -r {{ backend_dir }}/requirements.txt
& "{{ pip }}" install --no-deps chatterbox-tts