Vertical timeline of the parallel operations on HiCAT with three processes. The DMs are operated by a process that reads from all the different channels (LOWFC, PW and HOWFC here) and apply the shape corresponding to the sum of the different contributions. The LOWFC process starts by taking an initial reference, and then reads images from the camera and computes corrections sent to the LOWFC DM channel. The HOWFC reads runs PW probing, using a dedicated DM channel, and computes DM corrections with SM for the HOWFC channel. It can also interrupt the LOWFC by clearing the channel for specific acquisitions without LOWFC. Each process runs independently from the other. Data is transferred from cameras or to DMs through shared memory.