[fpc-devel] Blackfin support
Marco van de Voort
marcov at stack.nl
Tue Jul 13 10:34:14 CEST 2010
In our previous episode, Hans-Peter Diettrich said:
> > For me, a much higher priority when doing rewrites might be
> > multithreading nf the compiler itself.
> That's questionable, depending on the real bottlenecks in compiler
> operation. I suspect that disk I/O is the narrowest bottleneck, that can
> not be widened by parallel processing.
No that has to be solved by a bigger granularity (compiling more units in
one go). That avoids ppu reloading and limits directory searching (there is
a cache iirc) freeing up more bandwidth for source loading.
Not only compiling goes in paralel, I assume one could also load a ppu in
parallel? (and so parallelize the blocking time of the disk I/O and the
parsing of the .ppu contents.
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