Forum discussion (EDD review).
Overview:
In order to support Cray features like requesting particular NUMA nodes, or some number of NUMA nodes, PBS had previously
created one vnode for each NUMA node that is reported by the ALPS inventory output.
Sites have requested the ability to change the way PBS reports the Cray nodes, so that they can have fewer vnodes to deal with and not
encounter some of the differences that multiple vnodes per host brings.
The behavior of PBS will be changed to create, by default, a vnode per compute node as reported in the ALPS inventory.
New Interface: vnode_per_numa_node
FALSE
will cause PBS to create one vnode per Cray compute node. This is the default behavior TRUE
will cause PBS to create one vnode per Cray NUMA node.Interface: PBScrayseg
FALSE
TRUE
Administrator's instructions.
Definition of technical terms, spelling out acronyms and abbreviations.
Technical term | Description or definition |
---|---|
NUMA nodes | It expands to Non Uniform Memory Access. These are the individual segments that make up a Cray compute node. There can be 1, 2 or 4 of them per Cray compute node depending on the hardware. |