[slurm-users] Is It Possible to change the node order for different partition

Brian Andrus toomuchit at gmail.com
Tue Jun 26 22:42:45 MDT 2018

Yes, if you put a weight parameter to the nodes.

 From the manpage:

//    The priority of the node for scheduling purposes. All things being 
equal, jobs will be allocated the nodes with the lowest weight which 
satisfies their requirements. For example, a heterogeneous collection of 
nodes might be placed into a single partition for greater system 
utilization, responsiveness and capability. It would be preferable to 
allocate smaller memory nodes rather than larger memory nodes if either 
will satisfy a job's requirements. The units of weight are arbitrary, 
but larger weights should be assigned to nodes with more processors, 
memory, disk space, higher processor speed, etc. Note that if a job 
allocation request can not be satisfied using the nodes with the lowest 
weight, the set of nodes with the next lowest weight is added to the set 
of nodes under consideration for use (repeat as needed for higher weight 
values). If you absolutely want to minimize the number of higher weight 
nodes allocated to a job (at a cost of higher scheduling overhead), 
*give each node a distinct Weight value and they will be added to the 
pool of nodes being considered for scheduling individually*. The default 
value is 1./

Brian Andrus

On 6/26/2018 3:06 PM, Bill wrote:
> Hi Everyone,
> For example, I have two partitions, high,low each has same nodes 
> node[1-10], When we submit job to high partition the nodes order is 
> node1,node2......node10,  when we submit job to low partition, the 
> order is node10,node9......node1.
> Is it possible to do that?
> Thanks in advance,
> Bill

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