High-performance Instrumented Airborne Platform for Environmental Research
HIP
HSSI Interface Processor; Hosted IP
HiPPI
High Performance Parallel Interface. A 800 megabit-per-second network medium.
HIRDLS
High Resolution Dynamics Limb Sounder
HMAC
Hashed Message Authentication Code
HMM
Hex Modem Module (Cisco)
HOPI
Hybrid Optical Packet Infrastructure, an Internet2 project
HP
Hewlett Packard
HPC
High Performance Computing
HPN
High Performance Networking
HPNC
High Performance Network Connections (for Science and Engineering Research (NSF))
HPNS
High Performance Networking Section, a name temporarily used by the Network Engineering & Technology Section. This section was also formerly known as the Networking Group, or NWG. Before that, it was the Network and Data Communications group, or NADC.