Object Code Accelerator Manual

Glossary
Object Code Accelerator Manual—528144-003
Glossary-31
user process
user process. A process whose primary purpose is to solve a user’s problem. A user
process is not essential to the availability of a processor module. A user process is
created only when the user explicitly creates it. Contrast with system process.
virtual memory. A range of addresses that processes use to reference real storage, where
real storage consists of physical memory and disk storage.
volume. A disk drive or a pair of disk drives that forms a mirrored disk.
word. An instruction-set-defined unit of memory that corresponds to the width of registers
and to the most common and efficient size of memory operations. A TNS word is
2 bytes (16 bits) wide, beginning on any 2-byte boundary in memory. A MIPS RISC
word is 4 bytes (32 bits) wide, beginning on any 4-byte boundary in memory. An Intel®
Itanium® word is also 4 bytes (32 bits) wide, beginning on any 4-byte boundary in
memory.