Angel Operating System

What Does Angel Operating System Mean?

The Angel operating system is an experimental multikernel OS for multiprocessor systems that is based on a single, coherent and uniform virtual address space. Its biggest feature is the unification of naming and interprocess communication in both distributed and shared memory multiprocessor systems by making use of distributed shared memory techniques when shared memory is not already offered by the hardware.


Angel was developed at Imperial College and City University in London.

Techopedia Explains Angel Operating System

The Angel operating system was a project jointly undertaken by Imperial College and City University of London. The project was a follow-up to the earlier MESHIX operating system, which taught the developers some valuable lessons they would re-implement in Angel.

The principle behind this OS is using shared and distributed memory in multiprocessor systems where it is not implemented in hardware. The use of client-server cross-mapping optimizes the interprocess communication between the processor and its support hardware, so it becomes more efficient as the number of processors increases.


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Margaret Rouse is an award-winning technical writer and teacher known for her ability to explain complex technical subjects to a non-technical, business audience. Over the past twenty years her explanations have appeared on TechTarget websites and she's been cited as an authority in articles by the New York Times, Time Magazine, USA Today, ZDNet, PC Magazine and Discovery Magazine.Margaret's idea of a fun day is helping IT and business professionals learn to speak each other’s highly specialized languages. If you have a suggestion for a new definition or how to improve a technical explanation, please email Margaret or contact her…