Physical device optimization with reduced memory footprint via time reversal at absorbing boundaries

At least one non-transitory machine-accessible storage medium that provides instructions that, when executed by a machine, will cause the machine to perform operations comprising:

• receiving an initial description of a physical device represented by structural parameters within a simulated environment;
• performing a simulation of the physical device in response to an excitation source over a plurality of time steps, wherein the simulated environment includes one or more absorbing boundaries for attenuation of an output of the excitation source during the simulation, wherein the one or more absorbing boundaries surround a plurality of voxels representative of the physical device;
• recording attenuated field values of the simulated environment associated with the attenuation during the simulation over the plurality of time steps of the simulation;
• and
• performing a reverse simulation of the physical device in which the attenuated field values are replayed over the plurality of time steps in reverse to recover a field response of the simulated environment at one or more of the plurality of time steps for one or more voxels included in the plurality of voxels representative of the physical device.