Profile module is a set of macros to measure time spent in a particular scope on the fly. To use it, first compile the code with MPQC_PROFILE_ENABLE defined. Register the thread before you start profiling by putting somewhere in the beginning

MPQC_PROFILE_REGISTER_THREAD;

Insert MPQC_PROFILE_LINE in the scope of the code you want profiled, eg

{
    MPQC_PROFILE_LINE;
    do_lots_of_work_function();
}

Dump (and reset/clear) profiling data with MPQC_PROFILE_DUMP(cout), eg:

MPQC_PROFILE_DUMP(std::cout);

The output will be grouped by thread id and will contain file:line keys followed by total time spent in the scope and the number of time the scope was entered.

Warning: Dump/reset/clear profiler only after the events have finished, otherwise there will be difficult to track segfaults. Better yet, one needs to fix profiler to generate error in those cases.