aa

tour-comfy/run_comfyui.sh

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+#!/bin/bash
+# Launch the ComfyUI backend (headless) for the Qwen-Image-Edit API.
+# gfx906 (MI50) has no flash-attention, so use the pytorch cross-attention path.
+set -e
+BASE=/media/tour/APPS/comfyui
+cd "$BASE/ComfyUI"
+source "$BASE/venv/bin/activate"
+
+# MI50 / Vega20 is happiest in fp16; avoid bf16 emulation.
+export PYTORCH_HIP_ALLOC_CONF=expandable_segments:True
+export HSA_ENABLE_SDMA=0
+
+# Split cross-attention chunks the attention matmul -> much lower peak VRAM,
+# which is what lets the 20B Q8 edit model + reference-image sequence fit in 32GB.
+exec python main.py \
+    --listen 127.0.0.1 \
+    --port 8188 \
+    --use-split-cross-attention \
+    "$@"