On Tue, 2005-07-05 at 17:08 +0100, Simon Marlow wrote: > > Thanks, downloading it now.. will try. What exactly is > > a 'registered' build? > > An "unregisterised" build generates plain C which is compiled with a C > compiler. The term "registerised" refers to a set of optimisations > which require post-processing the assembly generated by the C compiler > using a Perl script (affectionately known as the Evil Mangler). In > particular, registerised code does real tail-calls and uses real machine > registers to store the Hsakell stack and heap pointers.
Ah! So 'register' refers to machine registers .. not some certification by some kind of authority, which is what I guessed .. ? > Sure, it's good to look at these small benchmarks to improve aspects of > our compilers, but we should never claim that results on microbenchmarks > are in any way an indicator of performance on programs that people > actually write. One can also argue that 'programmer performance' is important, not just machine performance. > The shootout has lots of good benchmarks, for sure. I'm not so sure ;( > Don't restrict > yourself to the small programs, though. Of course, larger more complex programs may give interesting performance results, but have one significant drawback: a lot more work is required to write them. > It's still hard to get a big picture from the results - there are too > many variables. I believe many of the Haskell programs in the suite can > go several times faster with the right tweaks, and using the right > libraries (such as a decent PackedString library). Maybe I'm asking the wrong question. Can you think of a computation which you believe Haskell would be the best at? .. and while you're at it: a computation GHC does NOT handle well -- IMHO these are actually most useful to compiler writers. -- John Skaller <skaller at users dot sourceforge dot net> Download Felix: http://felix.sf.net
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