Author: Vincent Diepeveen
Date: 08:02:37 11/14/02
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On November 13, 2002 at 14:59:56, David Rasmussen wrote: I actually wrote a checkers program in Gofer (functional language developed at university amsterdam). In fact it was international 10x10 checkers for a 8x8 board. It searched about 1 node a second at a P100. That was not compiled. The gofer2c conversion tool they had was very incompatible written for turbo-c, even by then completely outdated. Yet i tried that once too and it was about a factor 20 faster than runtime. I translated the code by hand to C and it was a factor 10000 faster. Of course some gofer experts were not happy when i posted that publicly around. They rewrote my code. After some weeks fulltime work they managed to speedup my gofer code a factor 2. Only left a factor 5000 :) Of course this was without using imperative haskell additions. If you are functional, then better write the whole thing functional, if not then use an imperative language :) Language *does* matter. >On November 13, 2002 at 13:35:51, Robert Hyatt wrote: > >> >>(3) programming language features. loops. block if-then-else structures, good >>access >>to native hardware data units, etc. Unfortunately, the more complex the >>language, the >>worse the optimizer, which is why C is quite popular. Very simple programming >>language, >>fairly close to assembler-level stuff, makes it fast/efficient. More abstract >>languages (PL/1, >>ADA, and off into the _really_ abstract stuff like prolog, snobol, lisp and so >>forth) tend to >>produce slower executables. >> > >Ada is not more abstract than C, if you don't want it to. On the other hand, it >is if you want it to. >In fact it has way better support for near-hardware programming. You can >specifiy more precisely and portably how many bits some field of a record is, >and how it should be interpreted etc. > >/David
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