EXPERIENCES WITH CM/AVS TO VISUALIZE AND COMPUTE SIMULATION DATA ON THE CM-5 (1) Arsi Vaziri (2) , Mark Kremenetsky (3) , Matt Fitzgibbon (4) , and Creon Levit (2) Report RNR-94-005 March 1994 NASA Ames Research Center Mail Stop T27A-1 Moffett Field, CA 94035-1000 {vaziri, kremenet, fitzgibb, creon}@nas.nasa.gov ABSTRACT We have used AVS and its parallel implementation, CM/AVS, to create a distributed environment between a Silicon Graphics IRIS Crimson workstation and a CM-5 Connection Machine parallel supercomputer from Thinking Machines Corporation. This heterogeneous distributed system is used to visualize data generated from simulations on the CM-5. CM/AVS modules have been developed to read, process, and visualize paral- lel array data stored on the CM-5 Scalable Disk Array (SDA). The data are cast into CM/AVS fields, sent through the local area network, and fed to local AVS modules running on the workstation. In addition, we are developing a CM/AVS CFD module based on a 3-D time dependent flow solver. A distributed network of CM/AVS and AVS modules is used to concurrently visualize the time varying flow field being computed on the CM-5. We will show early results of using this distributed parallel computation/visualization environ- ment for some current application codes. Examples of post processing CFD data and concurrent computa- tion/visualization of time-varying 3-D flow fields are given. (1). To appear in Proceedings AVS’94, Boston, MA, May 1994. (2). NAS Applied Research Branch, NASA Ames Research Center, Moffett Field, CA 94035-1000 (3). Thinking Machines Corp., NASA Ames Research Center, Moffett Field, CA 94035-1000 (4). Thinking Machines Corp., 245 First Street, Cambridge, MA 02142-1264