What is it about?
This work introduces a software package, called "modred", that easily and efficiently simplifies large complicated simulations (e.g., climate change simulations). These simulations often require supercomputers. This new software takes data from just a few example large simulations, and finds much simpler approximations (called "reduced order models") that can be run in a few seconds on a laptop. The approximations are sometimes over a million times smaller and faster.
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Why is it important?
The smaller and faster approximations ("reduced order models") make it much easier to iterate on different ways to understand and influence the original simulation and system. In the example of climate change simulations, the impact of different types of human actions can be quickly approximated without needing supercomputers.
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This page is a summary of: Algorithm 945, ACM Transactions on Mathematical Software, June 2014, ACM (Association for Computing Machinery),
DOI: 10.1145/2616912.
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