HP XC System 3.x Software NIS, PXE, RPM, role, Root, Switch, Network, See NIS, library, Services, resource, root node, NIS client, controller, controller, Information, SLURM backup

Network	See NIS.
Information
Services
NIS	Network Information Services. A mechanism that enables centralization of common data that is
	pertinent across multiple machines in a network. The data is collected in a domain, within which
	it is accessible and relevant. The most common use of NIS is to maintain user account information
	across a set of networked hosts.
NIS client	Any system that queries NIS servers for NIS database information. Clients do not store and
	maintain copies of the NIS maps locally for their domain.
NIS master server	A system that stores the master copy of the NIS database files, or maps, for the domain in the
	/var/yp/DOMAIN directory and propagates them at regular intervals to the slave servers. Only
	the master maps can be modified. Each domain can have only one master server.
NIS slave server	A system that obtains and stores copies of the master server's NIS maps. These maps are updated
	periodically over the network. If the master server is unavailable, the slave servers continue to
	make the NIS maps available to client systems. Each domain can have multiple slave servers
	distributed throughout the network.
P
parallel application	An application that uses a distributed programming model and can run on multiple processors.
	An HP XC MPI application is a parallel application. That is, all interprocessor communication
	within an HP XC parallel application is performed through calls to the MPI message passing
	library.
PXE	Preboot Execution Environment. A standard client/server interface that enables networked
	computers that are not yet installed with an operating system to be configured and booted
	remotely. PXE booting is configured at the BIOS level.
R
resource	Nodes with this role manage the allocation of resources to user applications.
management role
role	A set of services that are assigned to a node.
Root	A component of the administration network. The top switch in the administration network; it may
Administration	be a logical network switch comprised of multiple hardware switches. The Root Console Switch
Switch	is connected to the Root Administration Switch.
root node	A node within an HP XC system that is connected directly to the Root Administration Switch.
RPM	Red Hat Package Manager.
	1. A utility that is used for software package management on a Linux operating system, most
	notably to install and remove software packages.
	2. A software package that is capable of being installed or removed with the RPM software
	package management utility.
S
serial application	A command or user program that does not use any distributed shared-memory form of parallelism.
	A serial application is basically a single-processor application that has no communication library
	calls (for example, MPI, PVM, GM, or Portals).
	An example of a serial application is a standard Linux command, such as the ls command.
	Another example of a serial application is a program that has been built on a Linux system that
	is binary compatible with the HP XC environment, but does not contain any of the HP XC
	infrastructure libraries.
SLURM backup	The node on which the optional backup slurmctld daemon runs. On SLURM failover, this node
controller	becomes the SLURM master controller.
SLURM master	The node on which the slurmctld daemon runs.
controller

112 Glossary