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Upcoming multicore processors, with hundreds of cores
or more in a single chip, require a degree of parallel
scalability that is not currently available in today’s system
software. Based on prior experience in the supercomputing
sector, the likely trend for multicore processors
is away from shared memory and toward sharednothing
architectures based on message passing. In light
of this, the lightweight messages and channels programming
model, found among other places in Erlang, is
likely the best way forward. This paper discusses what
adopting this model entails, describes the architecture of
an OS based on this model, and outlines a few likely implementation
challenges.
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