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Re: fwd from Jim Demmel: More on repeatability

On 08/05/2011 03:08 PM, N.M. Maclaren wrote:

On Aug 5 2011, Arnold Neumaier wrote:


It makes sense to require repeatability on the same machine. I expect
that, too, for debugging purposes.


That's unclear. We are moving back into a world of coprocessors, and it
is worth learning from the experience of when we were there before.


So let me be more precise:

It makes sense to require that there is a (possibly a little slower)
repeatable mode on the same machine. I expect that, too, for debugging
purposes.