Q-Logic IB6054601-00 D manual Lid

Q

E – Glossary

LID	For Local Identifier. Assigned by the Subnet Manager
	(SM) to each visible node within a single InfiniBand
	fabric. It is similar conceptually to an IP address for
	TCP/IP.
Lustre	Open source project to develop scalable cluster file
	systems.
MAC Address	For Media Access Control Address. It is a unique
	identifier attached to most forms of networking
	equipment.
machines file	Same as mpihostsfile.
MADs	For Management Datagrams. Subnet Managers (SMs)
	and Subnet Management Agents (SMAs)
	communicate via MADs.
managed switch	A switch that can be configured to run an embedded
	Subnet Manager (SM).
MGID	For Multicast Group ID. An identifier for a multicast
	group. This can be assigned by the SM at multicast
	group creation time, although frequently it is chosen by
	the application or protocol instead.
MLID	For Multicast Local ID for InfiniBand multicast. This is
	the identifier a member of a multicast group uses for
	addressing messages to other members of the group.
MPD	For Multi-Purpose Daemon. An alternative to mpirun
	to launch MPI jobs, providing support for MPICH.
	Developed at Argonne National laboratory.
MPI	For Message-Passing Interface. MPI is a
	message-passing library or collection of routines used
	in distributed-memory parallel programming. It is used
	in data exchange and task synchronization between
	processes. The goal of MPI is to provide portability and
	efficient implementation across different platforms and
	architectures.
MPICH	A freely available, portable implementation of MPI.
mpihosts file	A file containing a list of the hostnames of the nodes in
	a cluster on which node programs may be run. Also
	referred to as node file, hosts file, or machine(s) file.

IB6054601-00 D E-3