TotalView Users Guide - CI Wiki

TRAP: An instruction that stops program execution and which allows a
debugger to gain control over your program.
TVDSVR PROCESS: The TotalView Debugger Server process, which facilitates
remote debugging by running on the same machine as the executable and
communicating with TotalView over a TCP/IP port or serial line.
TYPE TRANSFORMATION FACILITY: This is abbreviated as TTF. A TotalView
subsystem that allows you to change the way information appears. For
example, an STL vector can appear as an array.
UNDISCOVERED SYMBOL: A symbol that is referred to by another symbol.
For example, a typedef is a reference to the aliased type.
UNDIVING: The action of displaying the previous contents of a window,
instead of the contents displayed for the current dive. To undive, you click
the undive icon in the upper-right corner of the window.
UPC: (from a definition on the UPC web site) The Unified Parallel C language,
which is an extension to the C programming language that is
designed for high performance computing on large-scale parallel machines.
The language provides a uniform programming model for both shared and
distributed memory hardware. The programmer is presented with a single
shared, partitioned address space, where variables may be directly read
and written by any processor, but each variable is physically associated
with a single processor. See http://upc.nersc.gov/ for more information.
UPPER BOUND: The last element in the dimension of an array or the slice of
an array.
USER THREAD: A thread created by your program.
USER INTERRUPT KEY: A keystroke used to interrupt commands, most commonly
defined as Ctrl+C.
VARIABLE WINDOW: A TotalView window that displays the name, address,
data type, and value of a particular variable.
VISUALIZATION: In TotalView, visualization means graphically displaying an
array’s values.
VISUALIZER PROCESS: A process that works with TotalView in a separate
window, allowing you to see a graphic representation of program array
data.
WATCHPOINT: An action point that tells TotalView to stop execution when
the value of a memory location changes.
WORKER THREAD: A thread in a workers group. These are threads created by
your program that performs the task for which you’ve written the program.
WORKERS GROUP: All the worker threads in a control group. Worker threads
can reside in more than one share group.
410 Glossary