Uploaded sanitized BC250/ROCm Repository.
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Fabian
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"""Fix: keep UNet+VAE both on GPU (shared memory). No offloading."""
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import paramiko, time, json
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k = paramiko.Ed25519Key.from_private_key_file(r'C:\Users\fabia\.ssh\id_ed25519')
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c = paramiko.SSHClient()
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c.set_missing_host_key_policy(paramiko.AutoAddPolicy())
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c.connect('192.168.178.150', username='fabian', pkey=k, timeout=10)
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sftp = c.open_sftp()
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def sh(cmd, timeout=30):
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chan = c.get_transport().open_session()
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chan.settimeout(timeout)
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chan.exec_command('/bin/bash -l -c ' + "'" + cmd.replace("'", "'\\''") + "'")
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out = b""
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while True:
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try:
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chunk = chan.recv(65536)
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if not chunk: break
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out += chunk
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except: break
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chan.close()
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return out.decode(errors='replace').strip()
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# Kill first
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sh('pkill -9 -f "python3.*main.py" 2>/dev/null; sleep 2')
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print("Killed ComfyUI")
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# Read model_management.py
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with sftp.open('/home/fabian/ComfyUI/comfy/model_management.py', 'r') as f:
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code = f.read().decode()
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lines = code.split('\n')
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# Show current offload functions to understand exact code
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print("\n=== Finding offload functions ===")
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for i, line in enumerate(lines):
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if 'def unet_offload_device' in line or 'def vae_offload_device' in line:
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print(f"\n--- {line.strip()} at line {i+1} ---")
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for j in range(i, min(i+10, len(lines))):
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print(f" {j+1}: {lines[j]}")
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# ============ PATCH unet_offload_device ============
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# Current: returns CPU unless HIGH_VRAM
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# Fix: also return GPU for SHARED (APU shared memory = no point offloading)
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old_unet = None
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new_unet = None
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for i, line in enumerate(lines):
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if 'def unet_offload_device' in line:
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# Grab the function body (next ~6 lines)
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chunk = '\n'.join(lines[i:i+8])
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print(f"\n=== unet_offload_device chunk ===\n{chunk}")
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# The function checks HIGH_VRAM only. Add SHARED.
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if 'HIGH_VRAM' in chunk and 'SHARED' not in chunk:
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old_unet = chunk
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new_unet = chunk.replace(
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'vram_state == VRAMState.HIGH_VRAM',
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'vram_state == VRAMState.HIGH_VRAM or vram_state == VRAMState.SHARED'
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)
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print(f"\n -> Will patch to include SHARED")
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elif 'SHARED' in chunk:
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print(f"\n -> Already patched for SHARED")
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break
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# ============ PATCH vae_offload_device ============
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# Current: returns CPU unless --gpu-only
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# Fix: also return GPU for SHARED
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old_vae = None
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new_vae = None
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for i, line in enumerate(lines):
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if 'def vae_offload_device' in line:
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chunk = '\n'.join(lines[i:i+8])
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print(f"\n=== vae_offload_device chunk ===\n{chunk}")
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if 'args.gpu_only' in chunk and 'SHARED' not in chunk:
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old_vae = chunk
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new_vae = chunk.replace(
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'args.gpu_only',
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'args.gpu_only or vram_state == VRAMState.SHARED'
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)
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print(f"\n -> Will patch to include SHARED")
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elif 'SHARED' in chunk:
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print(f"\n -> Already patched for SHARED")
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break
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# Also check text_encoder_offload_device
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for i, line in enumerate(lines):
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if 'def text_encoder_offload_device' in line:
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chunk = '\n'.join(lines[i:i+8])
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print(f"\n=== text_encoder_offload_device chunk ===\n{chunk}")
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break
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# Apply patches
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patched = False
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if old_unet and new_unet:
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code = code.replace(old_unet, new_unet)
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patched = True
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print("\n[OK] Patched unet_offload_device")
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if old_vae and new_vae:
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code = code.replace(old_vae, new_vae)
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patched = True
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print("[OK] Patched vae_offload_device")
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if patched:
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# Backup and write
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sh('cp /home/fabian/ComfyUI/comfy/model_management.py /home/fabian/ComfyUI/comfy/model_management.py.bak2')
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with sftp.open('/home/fabian/ComfyUI/comfy/model_management.py', 'w') as f:
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f.write(code)
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print("[OK] Written to disk")
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else:
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print("[INFO] No patches needed (already applied or code changed)")
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# Verify
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with sftp.open('/home/fabian/ComfyUI/comfy/model_management.py', 'r') as f:
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verify = f.read().decode()
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for i, line in enumerate(verify.split('\n')):
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if 'def unet_offload_device' in line or 'def vae_offload_device' in line:
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print(f"\n--- VERIFY {line.strip()} ---")
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for j in range(i, min(i+8, len(verify.split(chr(10))))):
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print(f" {j+1}: {verify.split(chr(10))[j]}")
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# ============ RESTART ============
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print("\n=== RESTARTING ===")
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sh('rm -f /tmp/comfyui.log; rm -f ~/ComfyUI/output/ZImageTurbo_GPU*.png')
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sh('nohup /tmp/run_comfyui.sh > /tmp/comfyui.log 2>&1 &')
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time.sleep(3)
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pid = sh('pgrep -f "python3.*main.py"')
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print(f"PID: {pid}")
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# Wait for ready
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print("Waiting for HTTP", end='', flush=True)
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for i in range(90):
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r = sh('curl -s -o /dev/null -w "%{http_code}" http://127.0.0.1:8188/ 2>/dev/null', timeout=5)
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if '200' in r:
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print(f" OK ({i*2}s)")
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break
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print('.', end='', flush=True)
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time.sleep(2)
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else:
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print(" TIMEOUT")
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# Check SHARED mode active
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with sftp.open('/tmp/comfyui.log', 'r') as f:
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log = f.read().decode(errors='replace')
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for line in log.split('\n'):
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s = line.strip()
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if any(x in s.lower() for x in ['vram state', 'shared', 'device:', 'total vram']):
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print(f" {s}")
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# Submit workflow
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print("\nSubmitting workflow...")
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wf = {"prompt": {
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"1": {"class_type": "UnetLoaderGGUF", "inputs": {"unet_name": "z_image_turbo-Q5_K_S.gguf"}},
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"2": {"class_type": "CLIPLoaderGGUF", "inputs": {"clip_name": "Qwen3-4B.i1-Q5_K_S.gguf", "type": "qwen_image"}},
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"3": {"class_type": "VAELoader", "inputs": {"vae_name": "ae.safetensors"}},
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"4": {"class_type": "CLIPTextEncode", "inputs": {"text": "A red fox in a snowy forest, photorealistic", "clip": ["2", 0]}},
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"5": {"class_type": "EmptyLatentImage", "inputs": {"width": 512, "height": 512, "batch_size": 1}},
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"6": {"class_type": "KSampler", "inputs": {"model": ["1", 0], "positive": ["4", 0], "negative": ["4", 0],
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"latent_image": ["5", 0], "seed": 99999, "steps": 8, "cfg": 1.0,
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"sampler_name": "euler", "scheduler": "simple", "denoise": 1.0}},
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"7": {"class_type": "VAEDecode", "inputs": {"samples": ["6", 0], "vae": ["3", 0]}},
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"8": {"class_type": "SaveImage", "inputs": {"images": ["7", 0], "filename_prefix": "ZImageTurbo_GPU"}}
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}}
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with sftp.open('/tmp/wf.json', 'w') as f:
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f.write(json.dumps(wf))
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resp = sh('curl -s -X POST http://127.0.0.1:8188/prompt -H "Content-Type: application/json" -d @/tmp/wf.json')
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print(f" {resp[:150]}")
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# Monitor - watch for UNet+VAE both on GPU, fast VAE
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print("\nMonitoring...")
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t0 = time.time()
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for i in range(120):
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el = int(time.time() - t0)
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try:
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with sftp.open('/tmp/comfyui.log', 'r') as f:
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log = f.read().decode(errors='replace')
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except: log = ''
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# GPU usage
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gpu = sh('cat /sys/class/drm/card0/device/gpu_busy_percent 2>/dev/null || echo ?', timeout=5)
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temp = sh('cat /sys/class/drm/card0/device/hwmon/hwmon*/temp1_input 2>/dev/null', timeout=5)
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tc = int(temp)//1000 if temp.isdigit() else '?'
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# Get latest progress line
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last_progress = ''
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last_line = ''
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for line in log.split('\n'):
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s = line.strip()
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if '/8' in s and ('it/s' in s or 's/it' in s): last_progress = s
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if 'loaded' in s.lower() or 'VAE' in s or 'Requested' in s or 'Prompt executed' in s:
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last_line = s
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if s and 'FETCH' not in s: last_line = s
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status = last_progress or last_line
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print(f" [{el:>3}s] GPU:{gpu}% {tc}C | {status[-100:]}")
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# Check for output
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imgs = sh('ls ~/ComfyUI/output/ZImageTurbo_GPU*.png 2>/dev/null', timeout=5)
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if imgs:
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print(f"\n *** IMAGE DONE! *** {imgs}")
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print(f" Wall time: {el}s")
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# Print key log lines
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for line in log.split('\n'):
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s = line.strip()
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if any(x in s for x in ['loaded', 'load device', 'offload device', 'Prompt executed', '/8', 'Requested', 'VAE']):
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if 'FETCH' not in s:
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print(f" {s}")
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break
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# Check queue empty
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if el > 30:
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q = sh('curl -s http://127.0.0.1:8188/queue 2>/dev/null', timeout=5)
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try:
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qd = json.loads(q)
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if not qd.get('queue_running') and not qd.get('queue_pending'):
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time.sleep(3)
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imgs = sh('ls ~/ComfyUI/output/ZImageTurbo_GPU*.png 2>/dev/null', timeout=5)
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if imgs:
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print(f"\n *** DONE: {imgs} ***")
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else:
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print(f"\n Queue empty, no image. Error?")
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for line in log.split('\n')[-20:]:
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if line.strip() and 'FETCH' not in line: print(f" {line.strip()}")
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break
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except: pass
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# Check alive
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if sh('pgrep -f "python3.*main.py" >/dev/null && echo Y || echo N', timeout=5) == 'N':
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print("\n CRASHED!")
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for line in log.split('\n')[-20:]:
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if line.strip(): print(f" {line.strip()}")
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break
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time.sleep(5)
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sftp.close()
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c.close()
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print("\nDone.")
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