30Mar/11Off

Modeling Complex Aircraft Carrier Landing Scenarios on the GPU

by Liana

Partial screenshot of the COTS Journal main homepage.

This month's issue of COTS Journal - a publication dedicated to military technology applications, gave special emphasis to GPGPU as "the latest disruptive technology to invade military embedded computing."  Since GPU computing for military applications is one of our areas of expertise, we were invited to contribute to the Special Feature article Carrier Landing Modeling Systems Leverages GPGPU Computing.

The article provides a great overview of how GPUs have become a well-suited platform for data-intense military applications.

The part of the article we contributed for discusses the development of GPU-accelerated Computational Fluid Dynamic (CFD) solvers that can accurately model aircraft landing scenarios on naval vessels.  This is a challenging project because we're modeling scenarios in which small moving elements interact with larger moving structures.  Talk about extremely complex scenarios and data intense computations!

Here is what John Humphrey, Product Manager and Developer of CULA, had to say in the article:

“Creating wholly new CFD solvers based around CUDA is interesting, but not practical because customers are familiar with their present applications and don’t want to validate and re-learn new solvers, so the need to modify existing code is a reality. What we look for is the roughly 10% of program code that’s responsible for consuming 90% of the runtime cycles, as parallelizing the most compute-intensive portions of the program will yield the greatest performance improvement when applying GPGPU technology.”

When John and his team were working on the proof of concept for this project, they were able to accelerate a solver for Euler equations by 54x. This means reducing the solver's compute time from 18 hours to 20 minutes, which is pretty significant. What they are facing now are computations that can consume 150,000 CPU hours to run!  How many GPUs and CPUs will it take?  Check back with us in a few months as we're just getting started on this Phase II project.

Read full story here!

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