Re: Should tests run on a two CPU system?



In article
<514f63dd-c93d-4e8f-9186-be9b43085724@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>,
llothar@xxxxxx (llothar) wrote:

Is it necessary for QA to run multithreaded programms on systems with
two CPU's and separate Caches or will one Dualcore CPU be enough for
the usual posix thread based Apps?

When testing for reliability, rather than performance, we find a few
problems show up on systems with four cores that don't show up on ones
with two cores. These are almost certainly in the category of "problems
that could show up on two cores, and almost never manage to do so, but
show up on four cores regularly".

It is extraordinarily hard to be sure that one has got rid of *all*
intermittent problems in multi-threaded code.

--
John Dallman, jgd@xxxxxxxxx, HTML mail is treated as probable spam.
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