[gomp] Challenges in Implementing OpenMP

[Robert Dewar]

Biagio Lucini wrote:
> On Thursday 21 October 2004 16.08, Robert Dewar wrote:
> 
>>Being opposed to abstraction on the grounds that it stands
>>in the way of last nanosecond efficiency is an attitude
>>that was more common in 1960 than now :-)
> 
> 
> Not that so: I realise that HPC is a niche in the market, but if you spend 
> some figure with 5 or more zeros for a machine, you really want to make the 
> most of it (otherwise you needed not buy it right from the beginning). For 
> instance, we still keep writing matrix multiplications in assembly :-(

Sure, this is one area where you can justify hand coding. But
even when you spend a lot on a machine, you will find that
programming costs you a lot. After all one programmer for
one year comes with a loaded cost with five zeroes :-)

SO you can't convert this special case into a general
argument covering all, or even most or much software.
> 
> Biagio
>