updates UI

MI50/run_comfyui_mi50.sh

@@ -0,0 +1,23 @@
+#!/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
+# env.sh resolves BASE/COMFY/VENV (and keeps the venv off NTFS). Portable
+# across hosts (tour: /media/tour/APPS/comfyui, hubby: /home/hubby/comfyui).
+source "$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )/env.sh"
+cd "$COMFY"
+source "$VENV/bin/activate"
+
+# MI50 / Vega20 is happiest in fp16; avoid bf16 emulation.
+export PYTORCH_HIP_ALLOC_CONF="expandable_segments:True,garbage_collection_threshold:0.8"
+export HSA_ENABLE_SDMA=0
+
+# Split cross-attention chunks the attention matmul -> much lower peak VRAM,
+# which is what lets the 20B Q8 edit model + reference-image sequence fit in 32GB.
+# --lowvram offloads models to CPU RAM when not in use, preventing OOM.
+exec python main.py \
+    --listen 127.0.0.1 \
+    --port 8188 \
+    --use-split-cross-attention \
+    --lowvram \
+    "$@"