QCS QPU Gateway
The QCS Gateway is a service that provides high-availability, 24/7 connectivity to a QPU, even when that QPU is undergoing maintenance. This provides a seamless user experience, especially when using on-demand access. If the QPU is undergoing maintenance, your job will be queued until it is available and then run at the first opportunity.
| Direct Access | QCS Gateway | |
|---|---|---|
When should you use it? | When you have a QPU reservation, strict latency requirements, and direct network access | All other times |
Connection Routing | Direct connection to the QPU | Routes requests to QPUs |
Network Access | Requires direct network access to Rigetti Lab (e.g. from QCS JupyterHub) | Accessible from more network locations |
Request Latency | Minimum possible | Small (< 1ms) additional request latency |
Availability | Not highly available; connection fails during service upgrade and maintenance. Uptime is only guaranteed during user reservation periods | Highly available; jobs may be submitted 24/7 |
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