TotalView Users Guide - CI Wiki

Examining and Analyzing Arrays
Figure 212: Fortran Array
with Inverse Order and
Limited Extent
specify a (2:3,7::–1) slice with an integer*4(–1:5,2:10) Fortran array. (See
Figure 212.)
After you enter this slice value, TotalView only shows elements in rows 2
and 3 of the array, beginning with column 10 and ending with column 7.
Using Slices in the Lookup Variable Command
When you use the View > Lookup Variable command to display a Variable
Window, you can include a slice expression as part of the variable name.
Specifically, if you type an array name followed by a set of slice descriptions
in the View > Lookup Variable command dialog box, TotalView initializes
the Slice field in the Variable Window to this slice description.
If you add subscripts to an array name in the View > Lookup Variable dialog
box, TotalView will look up just that array element.
CLI: dprint small_array(5,5)
You can, of course, type an expression into the View > Lookup Variable
dialog box; for example, you could type small_array(i-1,j-1).
Array Slices and Array Sections
An array slice allows you to see a part of an array. The slice allows you to
remove parts of the array you do not want to see. For example, if you have
a 10,000 element array, you could tell TotalView that it should only display
100 of these elements. Fortran has introduced the concept of an array section.
When you create an array section, you are creating a new array that is
a subset of the old array. Because it is a new array, its first array index is 1.
In Figure 213 on page 337, the top left Variable Window displays an elevenelement
array slice. The bottom right Variable Window displays an elevenelement
array.
336 Chapter 15: Examining Arrays