Re:Context switching costs more than we give it credit for
by Uberphallus on Monday January 18, 2021 @04:51AM
(#25820070)
If you think about it, it won't leave your brain: McDonalds restaurants are basically CPUs, especially now with the pandemic.
Instruction fetch: ordering on the touchscreen.
Instruction decoding: each component of the order gets routed to the functional unit that can handle it.
Separate functional units: fries, burger flipping, burger assembly, fridge, etc.
Superscalar: multiple functional units to do the same operation (flipping, assembly)
Pipelines: different phases (fetch/decoding/execution/store in register) happen in parallel for different instructions.
Speculative execution: the most common sub-orders (e.g. Big Mac, basic cheeseburgers) are executed before they are ordered and wait in the sub-pipeline (rack slide) until completion.
Write to register: take the results from the different funcitonal units and putting them in your bag.
Instruction fetch: ordering on the touchscreen.
Instruction decoding: each component of the order gets routed to the functional unit that can handle it.
Separate functional units: fries, burger flipping, burger assembly, fridge, etc.
Superscalar: multiple functional units to do the same operation (flipping, assembly)
Pipelines: different phases (fetch/decoding/execution/store in register) happen in parallel for different instructions.
Speculative execution: the most common sub-orders (e.g. Big Mac, basic cheeseburgers) are executed before they are ordered and wait in the sub-pipeline (rack slide) until completion.
Write to register: take the results from the different funcitonal units and putting them in your bag.