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Re: [f-cpu] Winograd DCT on my seul.org account



On Mon, 22 Apr 2002, Michael Riepe wrote:
>Threads work best if they don't have to communicate with each other,
>no matter if they're running on 1 CPU or 1000.  Communication usually
>means that you have to synchronize the sender and receiver thread, and
>the faster one will have to wait. In an MP system, you can run another
>thread instead, but synchronization and context switching still take
>some time -- and the more threads communicate with each other, the more
>synchronization overhead you'll have. Therefore, `fine-grained' threading
>doesn't work well (e.g. threads that return quickly or communicate a lot).

It was just another possibility shown. But most of my
thoughts turn around clustered implementations anyway...

JG

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