[Starlingx-discuss] Couple of questions about STX

Yong Hu yong.hu at intel.com
Mon Sep 2 07:56:00 UTC 2019

pls see my comments inline.

In addition, are you going to use OpenStack VMs or K8S containers?


On 02/09/2019 3:24 PM, Felix Kretschmer wrote:
> Hello *,
> I am at the research of possible technologies for my use case and came across STX.
> Reading through the documentation and website I came up with a couple of questions and hope someone can help me by finding answers.
> 1. Realtime capabilities
> I did not find any information about the realtime capabilities. Is STX in the compute nodes ready for time deterministic workloads within VMs? e.g. PREEMPT_RT Linux or bare metal virtual machines? I guess kvm is the underlying hypervisor?
Compute node host Linux could be with standard kernel or RT kernel. 
Similarly guest OS in VM can have one of them.
Yes, we are using KVM and QEMU.
> 2. Windows VMs
> So far I did not find anything about Windows VMs. Due to the integration of Nova and the underlying technologies, I suppose this is possible without any doubts. Is it?
Good question. We haven't tried Windows as guest OS in VMs. Technically 
it should be okay to install a Windows VM on top of OpenStack.Checking 
out this doc: https://docs.openstack.org/image-guide/windows-image.html

> 3. Hardware requirements
> Probably the most interessting topic for me, because the requirements for bare metal installations seem quite high (Dual-socket with 8 cores each and 32GB RAM) for compute nodes.
> Is this necessary? I wanted to deploy a couple of compute nodes, but with a lot smaller hw requirements as well (single socket octa or even quad cores with 16 or 8 GB of RAM). How much does the system of compute nodes itself needs? Quite a lot I suppose if the controller needs 64GB of RAM.

It should be doable.
In some experimental cases (like demos), we did install compute nodes on 
PCs (core based, 16GB RAM), though StarlingX preferable memory size is 
As well, Supporting *smaller* work-notes ongoing effort...

> Thanks for any help.
> Best,
> Felix
> Von meinem Mobiltelefon gesendet
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