Differences Between LSF-HPC and Standard LSF

LSF-HPC for the HP XC environment supports all the standard features and functions that standard LSF supports, except for those items described in this section, in "Notes About Using LSF-HPC in the HP XC Environment" , and in the HP XC release notes for LSF-HPC.

•By LSF standards, the HP XC system is a single host. Therefore, all LSF “per-host” configuration and “per-host” options apply to the entire HP XC system. LSF-HPC knows only about the HP XC compute nodes through SLURM, so any preference or resource request that is intended for the HP XC compute nodes must go through LSF-HPC's external SLURM scheduler. See the LSF-SLURM External Scheduler (page 78) for more details.

•Standard LSF requires LSF daemons on every node. These daemons allow LSF to extract detailed information from each node, which you display or use for scheduling. This information includes CPU load, number of users, free memory, and so on.

LSF-HPC only runs daemons on one node in the HP XC system. Therefore, it relies on SLURM for static resource information (that is, number of CPUs, total physical memory, and any assigned SLURM “features”), and bases its scheduling on that static information.

•LSF-HPC does not collect the following information from each node in the HP XC system:

•maxswap•ndisks•r15s•r1m•r15m•ut•pg•io•tmp•swp•mem loadThe lshosts and lsload commands display “-” for each of these items.

•LSF-HPC with SLURM only runs daemons on one node within the HP XC system. This node hosts an HP XC LSF Alias, which is an IP address and corresponding host name specifically established for LSF-HPC on XC to use. The HP XC system is known by this HP XC LSF Alias within LSF. Various LSF commands, such as lsid , lshosts, and bhosts, display HP XC LSF Alias in their output. The default value of the HP XC LSF Alias, lsfhost.localdomain' is shown in the following examples:

$ lsid

Platform LSF HPC version number for SLURM, date stamp

Copyright 1992-2005 Platform Computing Corporation

My cluster name is hptclsf

 

 

 

 

 

 

 

My master name is lsfhost.localdomain

 

 

 

 

 

$ lshosts

 

 

 

 

 

 

 

 

 

HOST_NAMEtype

model

cpuf ncpus maxmem maxswp serverRESOURCES
lsfhost.loc SLINUX6 Opteron8

60.0

 

8 2007M

-

Yes

(slurm)

 

$ bhosts

 

 

 

 

 

 

 

 

 

HOST_NAME

 

STATUSJL/UMAXNJOBSRUNSSUSPUSUSPRSV
lsfhost.localdomai ok

-

8

0

0

0

0

0

Using LSF-HPC 69