About Cloud TPU reservations
This document explains how to reserve Cloud TPUs for your exclusive use by requesting one of the following:
- A future reservation for up to 90 days (in calendar mode)
- A future reservation for one year or longer with a committed use discount
Reservations are useful for the following cases:
- Planned or unplanned usage spikes
- Obtaining high-demand resources
- Long-running training jobs and inference workloads
- Workloads requiring a high assurance of capacity
A reservation is one consumption option for Cloud TPU. For more information, see Cloud TPU consumption options .
Choose a reservation type
Cloud TPU offers two types of reservations: future reservations for up to 90 days, which you request using calendar mode, and future reservations for one year or longer, which require a committed use discount (CUD). Both reservation types give you a high level of assurance that TPUs are available when you need them, for a specified time period. The following table shows the differences between the reservation types:
| Committed use discount (CUD) | Not supported | CUD required |
|---|
