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IB6054601-00 D E-1
Appendix E
Glossary
A glossary is provided below for technical terms used in the documentation.
bandwidth The rate at which data can be transmitted. This
represents the capacity of the network connection.
Theoretical peak bandwidth is fixed, but the effective
bandwidth, the ideal rate is modified by overhead in
hardware and the computer operating system. Usually
measured in bits/megabits or bytes/megabytes per
second. Bandwidth is related to latency.
BIOS For Basic Input/Output System. It typically contains
code for initial hardware setup and bootstrapping.
build node A machine on which source code, examples or
benchmarks can be compiled.
compute node A machine used to run a job.
DAPL For Direct Access Provider Library. The reference
implementation for RDMA transports. Consists of both
kernel mode (kDAPL) and user mode (uDAPL)
versions.
development node Same as build node.
DHCP For Dynamic Host Configuration Protocol. A
communications protocol for allocating IP addresses.
Also provides other basic networking information, such
as router addresses and name servers.
EATX For Extended Advanced Technology Extended
motherboard.
fabric The InfiniBand interconnect infrastructure, consisting
of a set of HCAs (and possibly TCAs) connected by
switches, such that each end node can directly reach
all other nodes.
front end node The machine or machines used to launch jobs.
funneled thread model Only the main (master) thread may execute MPI calls.
In InfiniPath MPI, hybrid MPI/OpenMP applications are
supported, provided the MPI routines are called only by
the master OpenMP thread.