SCHEDULE: NOV 12-18, 2011

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Parallel Algorithms for High-Accuracy CNC Milling Simulation

SESSION: Research Poster Reception

EVENT TYPE: ACM Student Research Competition Poster, Poster, Electronic Poster

TIME: 5:15PM - 7:00PM

SESSION CHAIR: Bernd Mohr

AUTHOR(S):Tyler Garaas, Alan Sullivan

ROOM:WSCC North Galleria 2nd/3rd Floors

ABSTRACT:
We demonstrate multithreaded algorithms for high-accuracy NC milling simulation. Our approach to simulation – Boolean difference between a set of analytic or procedural, signed, Euclidiean distance fields – is able to represent a milled workpiece, produced from hundreds-of-thousands of milling instructions, in under 50MB of space to an accuracy of <1μm; however, computationally intensive ray-casting limits rendering and editing performance (ie, interactivity). To increase interactivity, we developed a master-workers thread-manager that can be integrated into existing code-bases with minimal changes. In our poster, we describe [in movies!] the details of our system, thread-manager, and approach to dividing the rendering/editing algorithms into units-of-work dispatched for execution by the thread-manager. The system is capable of scheduling work completely independently, or in blocks of sequential work including load balancing operations. Our experiments reveal performance gains near unity in the number of available cores: 77-97% and >98% per core when editing and rendering, respectively.

Chair/Author Details:

Bernd Mohr (Chair) - Juelich Supercomputing Centre

Tyler Garaas - Mitsubishi Electric Research Laboratories

Alan Sullivan - Mitsubishi Electric Research Laboratories

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