Our work has produced two profile analysis tools that can be used online. ParaProf [8] is the main TAU tool used for offline performance analysis. It is capable of handling profiles from multiple performance experiments and gives various interactive capabilities for data exploration. ParaProf can accept profile data from raw files, our performance database, or through a socket-based interface.
The ParaVis tool [9] was developed to experiment with scalable performance analysis and visualization using three-dimensional graphics. The ParaVis arcitecture is shown in Figure 3; see [9] for details. A key result from our work with this tool is the importance of selection and focus in different components of the tool. Also, use of the tool demonstrated the online benefits of being able to see how performance behavior unfolds during a computation.
![\includegraphics[]{paravis}](img3.png)