er_print command Examples

• The following example generates a gprof-like list from an experiment. The output is a file named er_print.out which lists the top 100 functions, followed by caller-callee data, sorted by attributed user time for each.

  er_print -outfile er_print.out -metrics e.%user \ -sort e.user -limit 100 -functions -cmetrics a.user \ -csort a.user -callers-callees test.1.er

  You can also simplify this example into the following independent commands. However, keep in mind that each call to er_print in a large experiment or application can be time intensive.

  er_print -metrics e.%user -sort e.user \ -limit 100 -functions test.1.er

  er_print -cmetrics a.%user -csort a.user \ -callers-callees test.1.er

• This example summarizes how time is spent in functions.

  er_print -functions test.*.er

• This example shows the caller-callee relationships.

  er_print -callers-callees test.*.er

• This example shows which source lines are hot. Source-line information assumes the code was compiled and linked with -g. Append a trailing underscore to the function name for Fortran functions and routines. The 1 after the function name is used to distinguish between multiple instances of myfunction.

  er_print -source myfunction 1 test.*.er

• This example shows only the compiler commentary. It is not necessary to run your program in order to use this command.

  er_src -myfile.o

• These examples use wall-clock profiling to list functions and callers-callees.

  er_print -metrics ei.%wall -functions test.*.er

  er_print -cmetrics aei.%wall -callers-callees test.*.er

• This example shows how to run a script containing er_print commands.

  er_print -script myscriptfile test.1.er

  The myscriptfile script contains er_print commands. A sample of the script file contents follows:

  ## myscriptfile ## Send script output to standard output outfile - ## Display descriptive information about the experiments header ## Write out the sample data for all experiments overview ## Write out execution statistics, aggregated over ## the current sample set for all experiments statistics ## List functions functions ## Display status and names of available load objects object_list ## Write out annotated disassembly code for systime, ## to file disasm.out outfile disasm.out disasm systime ## Write out annotated source code for synprog.c ## to file source.out outfile source.out source synprog.c ## Terminate processing of the script quit