6.2. Q. What loops account for the most time? How much?
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6.2. Q. What loops account for the most time? How much?

A. Create a flat profile with wallclock time with loop instrumentation.

Figure 6.2. Flat Profile with Loops

Flat Profile with Loops

Here is how to instrument loops in an application 

% setenv TAU_MAKEFILE /usr/local/packages/tau/i386_linux/lib/Makefile.tau-mpi-pdt
% setenv TAU_OPTIONS '-optTauSelectFile=select.tau -optVerbose'
% cat select.tau
  BEGIN_INSTRUMENT_SECTION
  loops routine="#"
  END_INSTRUMENT_SECTION

% set path=(/usr/local/packages/tau/i386_linux/bin $path)
% make F90=tau_f90.sh
(Or edit Makefile and change F90=tau_f90.sh)
% mpirun -np 4 ./a.out
% paraprof --pack app.ppk
	Move the app.ppk file to your desktop. 

% paraprof app.ppk
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Chapter 6. Some Common Application Scenario  Home  6.3. Q. What MFlops am I getting in all loops?