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.

Please note, this feature is available when PBS is build with configure --enable-alps.
Most feature support specific to Cray is only available when PBS is built with configure --enable-alps.  
 

New Interface: vnode_per_numa_node

Interface: PBScrayseg

Change to interface: the vnode name


Administrator's instructions.


Definition of technical terms, spelling out acronyms and abbreviations.

Technical termDescription 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.