Re: [boost] Re: Technical session at the October C++ meeting?

From: John Max Skaller (skaller_at_[hidden])
Date: 2001-08-22 12:29:06

Peter Dimov wrote:
> 
> From: "John Max Skaller" <skaller_at_[hidden]>
> > > memset() is incredibly fast nowadays. :-)
> >
> > Sure, but as long as the limit is bus/memory cycle times,
> > its still an order of magnitude slower than the CPU.
> 
> A very complicated issue since caches and other brilliant inventions enter
> the picture. Burst-filling a block of memory is likely to be the most
> optimized operation in the memory subsystem; for instance, some RAM designs
> have a 'memset' that works in parallel with the CPU.

        Sure, but how many C compilers let you use it?
Usually, such special hardware is reserved for the kernel
and device drivers.

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