Scaling to thousands of GPUs on Titan

Author: Alan Gray
Posted: 26 Apr 2013 | 10:45

We have been among the first researchers to take advantage of the massive amounts of computing power available on the world's fastest "Titan" supercomputer (based at Oak Ridge National Laboratory). The full machine will boast 18 thousand GPUs, and just under half of these have been made available recently. We have shown that our highly scalable "Ludwig" soft matter physics application can efficiently take advantage of at least 8192 GPUs in parallel.

This application, which is able to simulate a wide range of complex fluids, will soon be put into production use on Titan to improve our understanding of the behaviour of systems containing the combination of liquid crystals and colloidal particles, with potential benefits for a wide range of technological areas. The code uses a combination of lattice Boltzmann and finite difference techniques. These latest performance results were recently presented at the EASC 2013 conference in Edinburgh and the work was described in a previous issue of EPCC news.



Alan Gray, EPCC

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