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Atari coding BBS
| Re: floats on 060 |
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Posted by: dml
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Jan,31.2014-17:55
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Memory bandwidth and scheduling float/integer in parallel...
If you're using fp mainly to take advantage of very fine grained pairing/overlaps - rather than looking at which is more suitable for a specific problem - almost certainly need to handcode it (GCC isn't that good).
The question of whether its better to pair integer+float or integer+integer probably comes down to the duration of the overlap, whether it is symmetric, and whether the dispatch is the limiting factor or not. I can't answer that one for 060 (somebody else here might), but yes its worth playing with for sure.
On some other architectures it usually turned out faster to pair float+integer so long as they are both doing unrelated work. If you have to convert between them constantly it began to suck. Might be less of a problem on 060 but convert/transfer overhead is probably always present in some form...
Dunno if thats helpful or not!
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Topic
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Date
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floats on 060
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deez
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Jan,31.2014-16:53
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Re: floats on 060
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dml
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Jan,31.2014-16:59
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Re: floats on 060
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deez
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Jan,31.2014-17:14
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Re: floats on 060
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dml
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Jan,31.2014-17:35
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Re: floats on 060
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dml
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Jan,31.2014-17:55
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Re: floats on 060
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deez
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Feb,04.2014-14:07
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Re: floats on 060
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Thomas / New Beat
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Feb,03.2014-09:27
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Re: floats on 060
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mOdder
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Feb,03.2014-22:48
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Re: floats on 060
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deez
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Feb,04.2014-15:00
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Re: floats on 060
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deez
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Feb,04.2014-14:08
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Re: floats on 060
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mikro
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Feb,04.2014-11:17
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Re: floats on 060
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dml
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Feb,04.2014-16:27
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Re: floats on 060
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sqward
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Feb,07.2014-02:53
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What's the anti-troll code?
That's your personal code to be able to add comments and messages on the dhs.nu site.
Don't have a code or forgot it? Fix it here.
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