Experiences with Cm/avs to Visualize and Compute Simulation Data on the Cm-5 (1)

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 parallel 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 environment for some current application codes. Examples of post processing CFD data and concurrent computation/visualization of time-varying 3-D flow fields are given. (1). To appear in ProceedingsAVS'94, Boston, MA, May 1994. (2). NASAppliedResearchBranch,NASA AmesResearchCenter,Moffett Field, CA 94035-1000 (3). ThinkingMachines Corp., NASA Ames ResearchCenter, MoffettField, CA 94035-1000 (4). Thinking Machines Corp., 245 First Street,Cambridge, MA02142-1264 EXPERIENCES WITH CM/AVS TO VISUALIZE AND COMPUTE SIMULATION DATA ON THE CM-5 Arsi Vaziri (I), Mark Kremenetsky (2), Matt Fitzgibbon (3), and Creon Levit 0) NASA Ames Research Center Mail Stop T27A-1 MoffettField.CA 94035-1000 {vaziri, kremenet, fitzgibb, creon}@nas.nasa.gov