DirectSynth

DirectSynth is a CyberShake post-processing code authored by Scott Callaghan in early 2015. It provides an alternative to separate SGT extraction and seismogram synthesis/PSA/RotD jobs, and requires fewer SUs and less I/O, making it a more efficient choice for CyberShake runs at frequencies at or above 1 Hz.

Overview

At a high level, DirectSynth works by reading in SGTs across a large number of processors. Another set of processors works through a list of seismogram synthesis/PSA/RotD tasks, requesting the SGTs needed for synthesis from the processor(s) which have them in memory. Since the total quantity of SGTs needed to synthesize