TotalView Users Guide - CI Wiki

Setting Group Focus
1.2: 37258.2 Stopped PC=0xffffffffffffffff
1.3: 37258.3 Stopped PC=0xd042c944
d1. dfocus p dstatus
1: 37258 Breakpoint [omp_prog]
1.1: 37258.1 Breakpoint PC=0x1000acd0,
[./omp_prog.f#35]
1.2: 37258.2 Stopped PC=0xffffffffffffffff
1.3: 37258.3 Stopped PC=0xd042c944
The CLI displays the following when you ask for the status of the lockstep
group. (The rest of this example uses the f abbreviation for dfocus, and st
for dstatus.)
d1. f L st
1: 37258 Breakpoint [omp_prog]
1.1: 37258.1 Breakpoint PC=0x1000acd0,
[./omp_prog.f#35]
This command tells the CLI to display the status of the threads in thread,
which is the 1.1 lockstep group since this thread is the TOI. The f L focus
command narrows the set so that the display only includes the threads in
the process that are at the same PC as the TOI.
By default, the dstatus command displays information at process width. This means
that you don’t need to type f pL dstatus.
The duntil command runs thread 1.3 to the same line as thread 1.1. The
dstatus command then displays the status of all the threads in the process:
d1. f t1.3 duntil 35
35@> write(*,*)"i= ",i,
"thread= ",omp_get_thread_num()
d1. f p dstatus
1: 37258 Breakpoint [omp_prog]
1.1: 37258.1 Breakpoint PC=0x1000acd0,
[./omp_prog.f#35]
1.2: 37258.2 Stopped PC=0xffffffffffffffff
1.3: 37258.3 Breakpoint PC=0x1000acd0,
[./omp_prog.f#35]
As expected, the CLI adds a thread to the lockstep group:
d1. f L dstatus
1: 37258 Breakpoint [omp_prog]
1.1: 37258.1 Breakpoint PC=0x1000acd0,
[./omp_prog.f#35]
1.3: 37258.3 Breakpoint PC=0x1000acd0,
[./omp_prog.f#35]
The next set of commands begins by narrowing the width of the default
focus to thread width—notice that the prompt changes—and then displays
the contents of the lockstep group:
d1. f t
t1. f L dstatus
1: 37258 Breakpoint [omp_prog]
1.1: 37258.1 Breakpoint PC=0x1000acd0,
[./omp_prog.f#35]
270 Chapter 13: Using Groups, Processes, and Threads