Any system where the only useful data is whatever was last written. In certain kinds of signals intelligence software, the primary concern is access to the cur

Any system where the only useful data is whatever was last written. In certain kinds of signals intelligence software, the primary concern is access to the current frame of data. You don’t want to miss an RF peak that lasts just a few nanoseconds. It can be preferable to have half the the frame overwritten mid-processing every few million iterations than to slow down each iteration and force a lower overall refresh rate.