Program Database Toolkit

Techniques to insert code annotations range from manual instrumentation using the TAU API (available in C++, C, Fortran, Python and Java) to more automated modes of inserting these annotations. Using the Program Database Toolkit (PDT) [16], the tau_instrumentor tool can examine the source code locations and re-write the original source code with annotations for identifying regions of interest. PDT comprises of modified commercial-grade compiler front-ends that emit program information in the form of a program database (PDB) ASCII text files. These are subsequently parsed by the DUCTAPE library. Currently, PDT provides the EDG front-end for C++ and C and the GNU gfortran [25], Cleanscape Flint, and Mutek Solutions front-ends for Fortran. Using PDT, TAU supports automatic instrumentation of C++, C and Fortran programs using interval events. There are several ways to identify interval events and it is probably more recognizable to talk about interval events as static timers.