Abstract
SCIRun is a problem solving environment (PSE) that provides the ability to guide or steer a running computation within a global address space. Extending such a tightly-integrated, performance-sensitive framework to enable pieces of the computation to run on different machines all within the same computation proves to be useful. In this paper, we describe a distributed version of the SCIRun problem solving environment and the changes to the control infrastructure, dataflow mechanism, and graphical user interface.