XSEDE Service Units and Jetstream2¶
Jetstream2 allocations are measured in XSEDE Service Units (SUs).
SUs are consumed at a rate of:
- Jetstream2 (CPU) - 1 SU per vCPU_core-hour (use of one virtual core of a CPU per hour).
- Jetstream2-LM (Large Memory) - 2 SUs per vCPU_core-hour
- Jetstream2-GPU - 4 SUs per vCPU_core-hour
Please refer to VM Sizes and configurations to see available VM flavors and per hour cost on Jetstream2.
- SUSPENDED instances will be charged .75 of their normal SU value. (75%)
- STOPPED instances will be charge 0.50 of their normal SU value. (50%)
- SHELVED instances will not be charged SUs. (0%)
For Large Memory and GPU allocations, the vCPU core hour cost is 2x and 4x respectively as noted above.
The reason for continuing to charge for VMs that are not in a usable state is that they still consume resorces if they are suspended or stopped. In those states, they still occupy allocable/usable space on the hypervisor, preventing other users from using those resources.
For instructions on managing instances, please see: