Uploaded sanitized BC250/ROCm Repository.
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Fabian
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#!/usr/bin/env python3
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"""Download Z-Image-Turbo GGUF model checkpoints on BC-250.
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Files needed (GGUF format — memory-efficient for 14GB RAM):
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1. z_image_turbo-Q5_K_S.gguf (5.19 GB) → diffusion_models/
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2. Qwen3-4B.i1-Q5_K_S.gguf (2.82 GB) → text_encoders/
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3. ae.safetensors (335 MB) → vae/
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Total: ~8.35 GB
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"""
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import paramiko
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import time
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ssh = paramiko.SSHClient()
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ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
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ssh.connect('192.168.178.150', username='fabian', key_filename=r'C:\Users\fabia\.ssh\id_ed25519')
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def run(cmd, timeout=3600, desc=""):
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if desc:
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print(f"\n{'='*60}")
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print(f" {desc}")
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print(f"{'='*60}")
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print(f"$ {cmd}")
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_, stdout, stderr = ssh.exec_command(cmd, timeout=timeout)
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out = stdout.read().decode()
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err = stderr.read().decode()
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rc = stdout.channel.recv_exit_status()
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if out.strip():
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lines = out.strip().split('\n')
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if len(lines) > 30:
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print(f" ... ({len(lines)} lines, showing last 30)")
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print('\n'.join(lines[-30:]))
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else:
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print(out.strip())
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if err.strip():
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lines = err.strip().split('\n')
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show = lines[-15:] if len(lines) > 15 else lines
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print(f"STDERR: {chr(10).join(show)}")
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print(f" Exit code: {rc}")
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return rc, out, err
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# Create download script for background execution
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dl_script = '''#!/bin/bash
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set -euo pipefail
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LOG="/home/fabian/model_download.log"
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exec > >(tee -a "$LOG") 2>&1
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source /home/fabian/comfyui-env/bin/activate
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COMFY="$HOME/ComfyUI"
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echo "=========================================="
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echo " Downloading Z-Image-Turbo GGUF Models"
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echo " Started: $(date)"
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echo "=========================================="
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# 1. Diffusion model (5.19 GB)
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echo ""
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echo "[1/3] Downloading z_image_turbo-Q5_K_S.gguf (5.19 GB)..."
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if [ -f "$COMFY/models/diffusion_models/z_image_turbo-Q5_K_S.gguf" ]; then
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echo " Already exists, skipping."
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else
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HF_XET_HIGH_PERFORMANCE=1 huggingface-cli download \
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jayn7/Z-Image-Turbo-GGUF \
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z_image_turbo-Q5_K_S.gguf \
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--local-dir "$COMFY/models/diffusion_models/" \
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--local-dir-use-symlinks False
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echo " Done."
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fi
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# 2. Text encoder Qwen3-4B (2.82 GB)
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echo ""
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echo "[2/3] Downloading Qwen3-4B.i1-Q5_K_S.gguf (2.82 GB)..."
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if [ -f "$COMFY/models/text_encoders/Qwen3-4B.i1-Q5_K_S.gguf" ]; then
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echo " Already exists, skipping."
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else
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HF_XET_HIGH_PERFORMANCE=1 huggingface-cli download \
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mradermacher/Qwen3-4B-i1-GGUF \
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Qwen3-4B.i1-Q5_K_S.gguf \
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--local-dir "$COMFY/models/text_encoders/" \
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--local-dir-use-symlinks False
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echo " Done."
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fi
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# 3. VAE (335 MB)
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echo ""
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echo "[3/3] Downloading ae.safetensors (VAE, 335 MB)..."
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if [ -f "$COMFY/models/vae/ae.safetensors" ]; then
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echo " Already exists, skipping."
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else
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HF_XET_HIGH_PERFORMANCE=1 huggingface-cli download \
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Comfy-Org/z_image_turbo \
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split_files/vae/ae.safetensors \
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--local-dir "$COMFY/models/vae/" \
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--local-dir-use-symlinks False
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# Move from subdirectory if needed
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if [ -f "$COMFY/models/vae/split_files/vae/ae.safetensors" ]; then
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mv "$COMFY/models/vae/split_files/vae/ae.safetensors" "$COMFY/models/vae/ae.safetensors"
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rm -rf "$COMFY/models/vae/split_files"
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fi
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echo " Done."
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fi
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echo ""
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echo "=========================================="
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echo " Model Download Summary"
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echo "=========================================="
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echo "Diffusion model:"
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ls -lh "$COMFY/models/diffusion_models/"*.gguf 2>/dev/null || echo " NOT FOUND"
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echo "Text encoder:"
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ls -lh "$COMFY/models/text_encoders/"*.gguf 2>/dev/null || echo " NOT FOUND"
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echo "VAE:"
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ls -lh "$COMFY/models/vae/"*.safetensors 2>/dev/null || echo " NOT FOUND"
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echo ""
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echo "Total model size:"
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du -sh "$COMFY/models/"
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echo ""
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echo "DOWNLOAD_COMPLETE"
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echo "Finished: $(date)"
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'''
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# Upload download script
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sftp = ssh.open_sftp()
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with sftp.open('/home/fabian/download_models.sh', 'w') as f:
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f.write(dl_script)
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sftp.close()
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run("chmod +x /home/fabian/download_models.sh", desc="Make download script executable")
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run("rm -f /home/fabian/model_download.log", desc="Clean old log")
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# Start download in background
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run("bash -c 'nohup bash /home/fabian/download_models.sh </dev/null >/dev/null 2>&1 & echo PID=$!'",
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desc="Start model download in background")
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# Wait and check progress
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time.sleep(10)
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run("tail -20 /home/fabian/model_download.log 2>/dev/null || echo 'Waiting for log...'",
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desc="Initial download progress")
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# Keep checking
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for i in range(6):
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time.sleep(30)
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rc, out, _ = run(f"tail -10 /home/fabian/model_download.log 2>/dev/null",
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desc=f"Download progress check {i+1}")
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if 'DOWNLOAD_COMPLETE' in out:
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print("\n ALL DOWNLOADS COMPLETE!")
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break
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# Final check
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run("tail -20 /home/fabian/model_download.log 2>/dev/null",
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desc="Final download status")
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run("du -sh ~/ComfyUI/models/diffusion_models/ ~/ComfyUI/models/text_encoders/ ~/ComfyUI/models/vae/ 2>/dev/null",
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desc="Model directory sizes")
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ssh.close()
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print("\nDone.")
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