As depicted in Figure 3, the analysis server is expected to run on a small segment of the parallel runtime environment. The bright boxes represent the nodes that are to be executing the parallel application. Execution and tracing of applications takes place on those nodes. The small segment of dark nodes at the right bottom corner is dedicated to interactive analysis of the trace data generated by applications running on the bright nodes. The master analysis node, which is drawn in stripes, does require access from and to the outer world. Clients will have to connect to this particular node in order to place analysis requests.