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Old March 12th 10, 09:23 AM posted to uk.sci.weather
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Default Computers bugging computer buggers

Garbage in does not equal garbage out and what you see is not what you
get with some computers. Apparently giving them large core numbers
gives them larger number cores:

"With older, single-processor systems, computers behave exactly the
same way as long as you give the same commands.

Today's computers are non-deterministic," says Luis Ceze, computer
science and engineering prof at the University of Washington,
Washington. "Even if you give the same set of commands, you might get
a different result."


Today's consumer dual-core systems may not be that hard to figure out,
but according to Ceze and his colleagues it gets harder and harder to
design reliable code as the number of cores goes up.

At the highest end of the scale, with the hundred-thousand-core
monsters of the heavyweight supercomputing league, "concurrency bugs"
- where changes in wire temperature or other hard-to-predict shifts
can alter the sequence in which information arrives and gets processed
- can be a nightmare.""
http://www.theregister.co.uk/2010/03...re_progo_ware/


Turing or not turing; that is the question.
Is that the question?

And it would explain certain goings on in certain forn parts.

 
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