NonStop System Glossary

draws power from its primary power source as long as it is available. If the primary source fails,
the AC transfer switch is switched to draw power from the secondary power source.
accelerate
To speed up emulated execution of a TNS object file by applying the Accelerator for TNS/R system
execution or the Object Code Accelerator (OCA) for TNS/E system execution before running the
object file.
accelerated mode
See TNS accelerated mode.
accelerated object code
The MIPS RISC instructions (in the MIPS region) that result from processing a TNS object file with
the Accelerator or with the Intel® Itanium® instructions (in the Itanium instruction region) that result
from processing a TNS object file with the Object Code Accelerator (OCA).
accelerated object file
A TNS object file that, in addition to its TNS instructions (in the TNS region) and symbol information
(in the symbol region), has been augmented by the Accelerator with equivalent but faster MIPS
RISC instructions (in the MIPS region) or the Object Code Accelerator (OCA) with equivalent but
faster Itanium instructions (in the Itanium instruction region) or both.
Accelerated Program Examiner (APE)
A tool used to browse through TNS object files that have been accelerated by the Accelerator.
APE displays MIPS RISC code in addition to TNS code. Contrast with TNSVU.
Accelerator
A program optimization tool that processes a TNS object file and produces an accelerated object
file that also contains equivalent MIPS RISC instructions (called the MIPS region). TNS object code
that is accelerated runs faster on TNS/R processors than TNS object code that is not accelerated.
See also TNS Object Code Accelerator (OCA).
Accelerator-generated MIPS RISC instructions
See MIPS RISC instructions.
Accelerator-generated RISC instructions
See MIPS RISC instructions.
Accelerator mode
The TNS/R operational environment in which an object file containing MIPS RISC instructions
(called the MIPS region) executes. Contrast with TNS/R native mode.
Accelerator region of an object file
The region (called the MIPS region) of an object file that contains MIPS RISC instructions and tables
necessary to execute the object file on a TNS/R system in accelerated mode. The Accelerator
creates this region. Contrast with OCA region of an object file. See also accelerated object file.
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