Tunnel Connect

Connect to Virtuoso

Establish connection to Cadence Virtuoso via the virtuoso-cli bridge.

Local mode

1. Ensure Virtuoso is running with the bridge loaded in CIW:

   RBPython = "/path/to/python3"
   RBDPath = "/path/to/virtuoso-cli/resources/daemons/ramic_bridge_daemon_3.py"
   load("/path/to/virtuoso-cli/resources/ramic_bridge.il")
   

2. Set environment and test:

   export VB_REMOTE_HOST=localhost
   virtuoso tunnel status --format json
   virtuoso skill exec "1+1"
   

Remote mode

1. Initialize config: virtuoso init
2. Edit .env — set VB_REMOTE_HOST at minimum
3. Start tunnel: virtuoso tunnel start
4. Verify: virtuoso tunnel status --format json

Troubleshooting

• Daemon exits immediately: Check RBPython points to a valid python3 binary (use full path like /usr/bin/python3)
• Connection reset: The daemon may have crashed — check if conn.shutdown() error in /tmp/RB.log; restart with RBDLog = t then RBStop() then RBStart() in CIW
• Port already in use: Run RBStopAll() in CIW, or change VB_PORT in .env