In C++, a single macro TAU_PROFILE, is sufficient to profile a block of statements. In C and Fortran, the user must use statement level timers to achieve this, using TAU_PROFILE_TIMER, TAU_PROFILE_START and TAU_PROFILE_STOP. Instrumentation of C++ source code can be done manually or by using tau_instrumentor, a tool that can automatically insert TAU annotations in the source code. Implementation of a Fortran 90 instrumentor is in progress.