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Exascale integrated modeling of low-order wavefront sensing and control for the Roman Coronagraph instrument

Astronomical instruments to detect exoplanets require extreme wavefront
 stability. For these missions to succeed, comprehensive and precise
 modeling is required to design and analyze suitable coronagraphs and
 their wavefront control systems. In this paper, we describe techniques
 for integrated modeling at scale that is, to the best of our
 knowledge, 1000 times faster than previously published works. We show
 how this capability has been used to validate performance and perform
 uncertainty quantification for the Roman Coronagraph instrument.
 Finally, we show how this modeling capacity may be necessary to design
 and build the next generation of space-based coronagraph
 instruments.