Re: [eigen] Automatic cache and block size determination

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On Tue, 22 Jun 2010 00:46:22 +0200, Thomas Capricelli

> I guess there is a very small runtime cost of 'checking if the cache


> have already been computed' for every product, right ?

> And also, computation involving cache sizes were previously done at

> compile time and not anymore.. ? Nothing to worry about ? 

If possible, it would be best to have a #define L2_CACHE_SIZE that would

default to

a runtime query at static initialization time but could be set when


When set at compile time, a typed value (as in [0]) would enable meta

programming unrolling, 

when set at runtime doing it at static initialization time would avoid

polluting other code

 with a check run only once.

My .2€

Best regards,



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