Author: Steven Edwards
Date: 11:54:38 07/05/05
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On July 05, 2005 at 05:02:54, Lance Perkins wrote: >Not true. > >Testing a multi-threaded app on a single-cpu machine is bogus. Its very easy to >write a multi-threaded app. Its a no brianer. But to be sure that it actually >works on a multi-cpu machine, you have to test it on one. > >On a single-cpu machine, the threads never run in parallel. A shared resource >will never be accessed simultaneously. Wrong. You are limiting the concept of a shared resource to a single memory access. A shared resource may be an entire table or even an executable object. Without protection by, say, a POSIX mutex, a program on a single processor machine running multiple threads may fail.
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