Performance on amd64
skaller at users.sourceforge.net
Tue Jul 5 23:09:28 EDT 2005
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
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Size: 189 bytes
Desc: This is a digitally signed message part
Url : http://www.haskell.org//pipermail/glasgow-haskell-users/attachments/20050706/981d39ca/attachment.bin
More information about the Glasgow-haskell-users