PEEK Reference Manual

Glossary
PEEK Reference Manual — 529657-006
Glossary - 12
UCME
traps (ARITHOV), stack overflow traps (STKOV), and Measure sampling interrupts
(SAMPLE).
UCME. (1) See uncorrectable memory error (UCME). (2) The PEEK INTERRUPTS element
that reports UCME interrupts. See also interrupt.
uncorrectable memory error (UCME). A multiple-bit error in an addressable memory
location. The operating system cannot compensate for such errors. Contrast with
correctable memory error (CME).
unlocking memory. The task of allowing previously locked logical pages to be stolen by the
memory manager.
unnamed process. A process to which a process name was not assigned when the
process was created. Contrast with named process.
unsequenced packets. One-packet messages, such as “I’m alive” and message
acknowledgments.
user process. A process whose primary purpose is to solve a user's problem. Contrast
with system process.
virtual memory. A range of addresses that processes use to reference a memory storage
space that can be considerably larger than physical memory. The system maps such
references onto physical memory, transferring the contents of the addressed locations
as necessary between physical memory and some mass-storage medium.
virtual page. See memory page.
waiting process. A process that cannot execute until an event occurs, a resource becomes
available, or an interval of time passes