DocumentationFlavors
OpenStack flavor entity defines compute virtual server parameters such as:
- virtual server specifications
- vCPU count
- memory amount
- storage size (both distributed, ephemeral)
- defines QoS (IOPs, network bandwith, …)
- grants access to additional resources (hardware cards for instance GPU)
- defines set of compute hypervisors where can be virtual server scheduled
Flavor types
We differentiate following flavor types:
- Standard flavors
standard.*focused on high availability, support for (live) VM migration but lower performance. - HPC flavors
hpc.*are focused on performance (NUMA, local ephemeral disks), access to premium HW (GPUs).
Most frequently used flavors
| Flavor name | vCPU | RAM [GB] | HPC | SSD | GPU | Disc throughput [MB/s] | IOPS [op/s] | Average throughput [MB/s] |
|---|---|---|---|---|---|---|---|---|
| standard.tiny | 1 | 1 | No | No | No | 262 | 2000 | 250 |
| standard.small | 1 | 2 | No | No | No | 262 | 2000 | 250 |
| standard.medium | 2 | 4 | No | No | No | 262 | 2000 | 250 |
| standard.large | 4 | 8 | No | No | No | 262 | 2000 | 250 |
| standard.xlarge | 4 | 16 | No | No | No | 262 | 2000 | 250 |
| standard.xlarge-cpu | 8 | 16 | No | No | No | 262 | 2000 | 250 |
| standard.xxlarge | 8 | 32 | No | No | No | 262 | 2000 | 250 |
| standard.xxxlarge | 8 | 64 | No | No | No | 262 | 2000 | 250 |
| standard.2core-16ram | 2 | 16 | No | No | No | 262 | 2000 | 250 |
| standard.memory | 2 | 32 | No | No | No | 262 | 2000 | 250 |
| standard.12core-24ram | 12 | 24 | No | No | No | 262 | 2000 | 625 |
| standard.16core-32ram | 16 | 32 | No | No | No | 262 | 2000 | 625 |
| standard.one-to-many | 20 | 64 | No | No | No | 262 | 2000 | 250 |
| standard.20core-128ram | 20 | 128 | No | No | No | 262 | 2000 | 250 |
| standard.20core-160ram | 20 | 160 | No | No | No | 262 | 2000 | 1250 |
| standard.20core-256ram | 20 | 256 | No | No | No | 262 | 2000 | 1250 |
| hpc.small | 4 | 16 | Yes | No | No | 524 | 2000 | 2000 |
| hpc.medium | 8 | 32 | Yes | No | No | 524 | 2000 | 2000 |
| hpc.large | 16 | 64 | Yes | No | No | 524 | 2000 | 2000 |
| hpc.xlarge | 24 | 96 | Yes | No | No | 524 | 2000 | 2000 |
| hpc.xlarge-memory | 24 | 256 | Yes | No | No | Unlimited | Unlimited | Unlimited |
| hpc.4core-4ram | 4 | 4 | Yes | No | No | 524 | 2000 | 2000 |
| hpc.4core-16ram-ssd-ephem | 4 | 16 | Yes | Yes | No | Unlimited | Unlimited | 1250 |
| hpc.4core-16ram-ssd-ephem-500 | 4 | 16 | Yes | Yes | No | Unlimited | Unlimited | 1250 |
| hpc.8core-8ram | 8 | 8 | Yes | No | No | 524 | 2000 | 2000 |
| hpc.8core-16ram | 8 | 16 | Yes | No | No | 524 | 2000 | 2000 |
| hpc.8core-32ram-ssd-ephem | 8 | 32 | Yes | Yes | No | Unlimited | Unlimited | 1250 |
| hpc.8core-32ram-ssd-rcx-ephem | 8 | 32 | Yes | Yes | No | Unlimited | Unlimited | Unlimited |
| hpc.8core-64ram | 8 | 64 | Yes | No | No | 524 | 2000 | 2000 |
| hpc.16core-32ram | 16 | 32 | Yes | No | No | 524 | 2000 | 2000 |
| hpc.16core-32ram-100disk | 16 | 32 | Yes | No | No | 524 | 2000 | 2000 |
| hpc.16core-64ram-ssd-ephem | 16 | 64 | Yes | Yes | No | Unlimited | Unlimited | 1250 |
| hpc.16core-128ram | 16 | 128 | Yes | No | No | 524 | 2000 | 2000 |
| hpc.18core-48ram | 18 | 48 | Yes | No | No | 524 | 2000 | 2000 |
| hpc.19core-176ram-nvidia-2080-glados | 19 | 176 | Yes | Yes | Yes | Unlimited | Unlimited | Unlimited |
| hpc.24core-96ram-ssd-ephem | 24 | 96 | Yes | Yes | No | Unlimited | Unlimited | 1250 |
| hpc.24core-256ram-ssd-ephem | 24 | 256 | Yes | Yes | No | Unlimited | Unlimited | 1250 |
| hpc.30core-64ram | 30 | 64 | Yes | No | No | Unlimited | Unlimited | Unlimited |
| hpc.30core-128ram-ssd-ephem-500 | 30 | 128 | Yes | Yes | No | Unlimited | Unlimited | 1250 |
| hpc.30core-256ram | 30 | 256 | Yes | No | No | Unlimited | Unlimited | Unlimited |
| hpc.32core-256ram-nvidia-t4-single-gpu | 32 | 240 | Yes | No | Yes | Unlimited | Unlimited | Unlimited |
| hpc.38core-372ram-ssd-ephem | 38 | 372 | Yes | Yes | No | Unlimited | Unlimited | 1250 |
| hpc.38core-372ram-nvidia-2080-glados | 38 | 352 | Yes | Yes | Yes | Unlimited | Unlimited | Unlimited |
| hpc.40core-372ram-nvidia-2080-glados | 40 | 352 | Yes | Yes | Yes | Unlimited | Unlimited | Unlimited |
| hpc.64core-512ram-nvidia-t4 | 64 | 480 | Yes | No | Yes | Unlimited | Unlimited | Unlimited |
| hpc.hdh-8cpu-120ram | 8 | 120 | Yes | No | No | Unlimited | Unlimited | Unlimited |
| hpc.hdh | 32 | 480 | Yes | No | No | Unlimited | Unlimited | Unlimited |
| hpc.hdh-ephem | 32 | 480 | Yes | No | No | Unlimited | Unlimited | Unlimited |
| hpc.ics-gladosag-full | 38 | 372 | Yes | No | No | Unlimited | Unlimited | Unlimited |
| hpc.nvidia-2080-hdg-16cpu-236ram-ephem | 16 | 236 | Yes | No | Yes | Unlimited | Unlimited | Unlimited |
| hpc.nvidia-2080-hdg-ephem | 32 | 448 | Yes | No | Yes | Unlimited | Unlimited | Unlimited |
| hpc.nvidia-2080-hdg-half-ephem | 16 | 238 | Yes | No | Yes | Unlimited | Unlimited | Unlimited |
| a3.32core-120ram-1t4 | 32 | 120 | Yes | Yes | Yes | Unlimited | Unlimited | Unlimited |
| a3.32core-240ram-1t4 | 32 | 240 | Yes | Yes | Yes | Unlimited | Unlimited | Unlimited |
| a3.64core-240ram-2t4 | 64 | 240 | Yes | Yes | Yes | Unlimited | Unlimited | Unlimited |
| a3.64core-480ram-2t4 | 64 | 480 | Yes | Yes | Yes | Unlimited | Unlimited | Unlimited |
| meta-hdm.38core-300ram-nvidia-a40-quad | 38 | 300 | Yes | Yes | Yes | Unlimited | Unlimited | Unlimited |
| elixir.hda1 | 30 | 724 | Yes | No | No | Unlimited | Unlimited | Unlimited |
| elixir.hda1-10core-240ram | 10 | 240 | Yes | No | No | Unlimited | Unlimited | Unlimited |
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