STRIPING_WITH_MINIMUM_NETWORK

Syntax

STRIPING_WITH_MINIMUM_NETWORK=y | n

Description

For LSF IBM Parallel Environment (PE) integration. Specifies whether or not nodes which have more than half of their networks in READY state are considered for PE jobs with type=sn_all specified in the network resource requirements (in the bsub -network option or the NETWORK_REQ parameter in lsb.queues or lsb.applications). This makes certain that at least one network is UP and in READY state between any two nodes assigned for the job.

When set to y, the nodes which have more than half the minimum number of networks in the READY state are considered for sn_all jobs. If set to n, only nodes which have all networks in the READY state are considered for sn_all jobs.

Note: LSF_PE_NETWORK_NUM must be defined with a value greater than 0 for STRIPING_WITH_MINUMUM_NETWORK to take effect.

Example

In a cluster with 8 networks, due to hardware failure, only 3 networks are ok on hostA, and 5 networks are ok on hostB. If STRIPING_WITH_MINUMUM_NETWORK=n, an sn_all job cannot run on either hostA or hostB. If STRIPING_WITH_MINUMUM_NETWORK=y, an sn_all job can run on hostB, but it cannot run on hostA.

Default

n