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Modulefile – HP XC System 3.x Software User Manual

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L

Linux Virtual
Server

See LVS.

load file

A file containing the names of multiple executables that are to be launched simultaneously by a
single command.

Load Sharing
Facility

See LSF-HPC with SLURM.

local storage

Storage that is available or accessible from one node in the HP XC system.

LSF execution host

The node on which LSF runs. A user's job is submitted to the LSF execution host. Jobs are launched
from the LSF execution host and are executed on one or more compute nodes.

LSF master host

The overall LSF coordinator for the system. The master load information manager (LIM) and master
batch daemon (mbatchd) run on the LSF master host. Each system has one master host to do all
job scheduling and dispatch. If the master host goes down, another LSF server in the system
becomes the master host.

LSF-HPC with
SLURM

Load Sharing Facility for High Performance Computing integrated with SLURM. The batch system
resource manager on an HP XC system that is integrated with SLURM. LSF-HPC with SLURM places
a job in a queue and allows it to run when the necessary resources become available. SF-HPC
with SLURM manages just one resource: the total number of processors designated for batch
processing.

LSF-HPC with SLURM can also run interactive batch jobs and interactive jobs. An LSF interactive
batch job allows you to interact with the application while still taking advantage of SF-HPC with
SLURM scheduling policies and features. An SF-HPC with SLURM interactive job is run without
using SF-HPC with SLURM batch processing features but is dispatched immediately by SF-HPC
with SLURM on the LSF execution host.

See Also LSF execution host.

LVS

Linux Virtual Server. Provides a centralized login capability for system users. LVS handles incoming
login requests and directs them to a node with a login role.

M

Management
Processor

See MP.

master host

See LSF master host.

module

A package that provides for the dynamic modification of a user's environment by means of
modulefiles.
See Also modulefile.

modulefile

Contains information that alters or sets shell environment variables, such as PATH and MANPATH.
Modulefiles enable various functions to start and operate properly.

MP

Management Processor. Controls the system console, reset, and power management functions
on HP Integrity servers.

MPI

Message Passing Interface. A library specification for message passing, proposed as a standard
by a broadly based committee of vendors, implementors, and users.

MySQL

A relational database system developed by MySQL AB that is used in HP XC systems to store
and track system configuration information.

N

NAT

Network Address Translation. A mechanism that provides a mapping (or transformation) of
addresses from one network to another. This enables external access of a machine on one LAN
that has the same IP address as a machine on another LAN, by mapping the LAN address of the
two machines to different external IP addresses.

Network Address
Translation

See NAT.

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