[slurm-users] Sharing a single machine between two groups; What's the best way define this in slurm config?

[Paul Edmon]

Probably your best bet is to use QoS's to accomplish this.  Be advised 
that suspending jobs still leaves them in memory space.

-Paul Edmon-

On 9/18/19 9:16 PM, Benjamin Wong wrote:
> Hello,
>
> I plan to purchase a GPU machine with 8 GPUs which will be shared 
> between group A and group B.  Group A is an existing group with SLURM 
> nodes.  Group B has no SLURM nodes but will have access to half of the 
> resources on one SLURM node.  I'm trying to figure out how to get 
> SLURM to implement the policies I want below:
>
>   * If both groups are using the machine evenly, then I want the
>     resources to be split evenly.
>   * If only group A is using the resources, then they will consume all
>     the resources and vice versa.
>   * If group A is using all resources but group B begins requesting
>     resources, then group A will suspend half of its work for group B
>     to use resources.  Vice versa applies.
>
> What's the best way to implement this?  Should I have two halves of a 
> machine in two different partitions?
>
> Looking forward to hints,
> Ben Wong
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