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Evaluation speedup or (dynamic evaluation)
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Ricardo Barreira



Joined: 27 Apr 2010
Posts: 821
PostPost subject: Re: Evaluation speedup or (dynamic evaluation)    Posted: Thu Apr 05, 2012 8:26 pm Reply to topic Reply with quote
It's an interesting idea, but it looks like a lot of added complexity for little benefit.

If the code injection / code generation runs too often, this screws up with the L1 code cache which may decrease performance instead of improving it. Reminds me of John Carmack's (game engine programmer) statements about Wolfenstein 3D's dynamic code generation for rendering. It was great on 386 CPUs if I recall correctly, but on 486 and above (or was it Pentium?) it actually decreased performance due to thrashing the cache.
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Subject Author Date/Time
Evaluation speedup or (dynamic evaluation) Mike Libanan Thu Apr 05, 2012 12:27 am
      Re: Evaluation speedup or (dynamic evaluation) Robert Hyatt Thu Apr 05, 2012 7:06 pm
            Re: Evaluation speedup ; dynamic evaluation Mike Libanan Thu Apr 05, 2012 11:10 pm
                  Re: Evaluation speedup ; dynamic evaluation Marco Costalba Fri Apr 06, 2012 5:39 am
                        Re: Evaluation speedup ; dynamic evaluation Sven Schüle Fri Apr 06, 2012 12:01 pm
                  Re: Evaluation speedup ; dynamic evaluation Robert Hyatt Sun Apr 08, 2012 1:51 am
                        Re: Evaluation speedup ; dynamic evaluation Mike Libanan Sun Apr 08, 2012 12:47 pm
                              Re: Evaluation speedup ; dynamic evaluation Ronald de Man Sun Apr 08, 2012 1:23 pm
                                    Re: Evaluation speedup ; dynamic evaluation Robert Hyatt Mon Apr 09, 2012 5:10 pm
                                          Re: Evaluation speedup ; dynamic evaluation Ronald de Man Mon Apr 09, 2012 7:29 pm
      Re: Evaluation speedup or (dynamic evaluation) Ricardo Barreira Thu Apr 05, 2012 8:26 pm
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