HP UX Caliper Software manual Nop

measurement	A file that HP Caliper uses to perform a particular measurement, such as scgprof or icache.
configuration file	Each measurement has a corresponding measurement configuration file. See “HP Caliper
	Measurement Configuration Files” (p. 42).
measurement run	In the HP Caliper GUI, a folder that contains information about the types of data available for a
folder	single measurement run. It can also contain the collection specification used to collect the data
	in the folder.
nop	A “no-operation” instruction.
options file	A text file containing a list of HP Caliper command-line options and possibly other command-line
	syntax, including a measurement configuration file and program to be measured.
overview	A measurement that enables collecting fprof, dcache, and cstack data in one single collection
measurement	run.
per-process	A measurement performed on individual processes, compared with a system-wide measurement
measurement	performed on all CPUs in the system.
performance	A set of registers used to configure the performance monitors (PMC) and provide data values
monitor	from the performance monitors (PMD). In other words, the PMC register maintains control
configuration	information about what to monitor and the PMD register holds the actual data that results from
(PMC)/performance	the monitoring. The Integrity servers processor has four 48–bit performance counters (PMC/PMD
monitor data	pairs), and the Integrity servers dual-core Itanium 2 and Itanium 9300 quad-core processor have
(PMD)	12 48–bit performance counters (PMC/PMD pairs).
performance	A unit in the Integrity servers processor family that monitors events on the I/O processor's buses.
monitoring unit	The PMU is used to calculate bandwidth, data throughput, and efficiency. HP Caliper uses data
(PMU)	provided by the PMU for its analysis.
PMU histogram	A report that shows results grouped by function. In HP Caliper, these measurements produce PMU
report	histogram reports: alat, branch, cgprof, cstack, cycles, dcache, dtlb, fprof, icache,
	itlb, scgprof, and traps.
pmu_trace	A measurement, provided by the pmu_trace measurement configuration file, that measures and
measurement	reports traces of sampled PMU data associated with the application for each kernel thread.
precise	An instrumentation-based measurement that gives you exact information about every execution
measurement	path in your program. See “Precise Measurements ” (p. 26).
predicated off	An instruction that entered the instruction pipeline but had its execution aborted before completion.
instruction	A predicated off instruction has had its predicate changed to False. A predicated on instruction
	has a predicate of True.
predication	A technique used in the Integrity servers processor family whereby possible code branches are
	executed in parallel before a branch condition is proved. (This is in contrast to the branch
	prediction technique, where a branch is predicted and executed before the condition is proved.)
	Instructions are associated with a predicate, which determines whether the instruction will be
	executed fully or not. With predication, branches and the costs associated with them can be
	eliminated or lessened.
prefetch	A request to the main memory system to preload the cache with needed data.
processor set	On HP-UX, a set of processors grouped together for exclusive access to applications assigned to
	that processor set. Each application is assigned to a processor set and will run only on processors
	in the assigned processor set.
project	In the HP Caliper GUI, a set of one or more folders that can contain two types of information:
	collection specifications and measurement runs.
register stack	The part of the Integrity servers processor that moves registers between the register stack and the
engine (RSE)	backing store in memory.
retired instruction	A successfully (though not necessarily fully) executed instruction.
rule file	A file used by the HP Caliper Advisor to analyze an application. A rule file contains one or more
	independent rule functions and is read, compiled, and executed by the Advisor.
safe instruction	A technique used in the Integrity servers processor family to support precise exceptions.
recognition (SIR)

256 Glossary