On Thu, Jun 25, 2015 at 5:53 PM, Peter Bex <pe...@more-magic.net> wrote:
> On Thu, Jun 25, 2015 at 10:26:53PM +0200, Peter Bex wrote: > > On Thu, Jun 25, 2015 at 05:04:17PM -0300, Stephen Eilert wrote: > > > Not sure about the status of this particular GSOC, but SBCL could also > be > > > "cheating". > > > > > > http://www.sbcl.org/gsoc2013/ideas/#sec-1.2 > > > > > > Now, I thought GMP were GPL'd and SBCL not, so I'm unsure about the > legal > > > implications, if it does bundle GMP now. > > > > Thanks for posting that; I hadn't looked at the sbcl implementation > > of the pi-digits benchmark, but indeed that page says "Pi digits on > > the benchmarks game is currently a bunch of calls to GMP". This would > > *really* be cheating in my opinion, as it's not testing the language > > implementation but using nonstandard extensions that replace stuff > > that's already part of the core. > > > > I had just assumed it would be using the sbcl native implementation > > (which indeed is pretty damn good and almost 100% pure Lisp code). > > In fact, there are two implementations, one of which uses native > operations. It is still faster than CHICKEN and very close to Guile/GMP: > > > http://benchmarksgame.alioth.debian.org/u32/program.php?test=pidigits&lang=sbcl&id=2#log > > It does use some type annotations, though. Adding some to the > CHICKEN version makes it go a tiny bit faster, but not by much. > > Cheers, > Peter > That compilation output is amazing! ; note: forced to do GENERIC-* (cost 30) ; unable to do inline fixnum arithmetic (cost 4) because: ; The first argument is a INTEGER, not a FIXNUM. ; The result is a (VALUES INTEGER &OPTIONAL), not a (VALUES FIXNUM &REST T). ; unable to do inline (signed-byte 32) arithmetic (cost 5) because: ; The first argument is a INTEGER, not a (SIGNED-BYTE 32). ; The result is a (VALUES INTEGER &OPTIONAL), not a (VALUES ; (SIGNED-BYTE 32) &REST ; T). >From the benchmark page ( http://benchmarksgame.alioth.debian.org/u32/performance.php?test=pidigits#about ): "In addition to language specific multiprecision arithmetic, we will accept programs that use GMP <http://gmplib.org/>." So, the "cheating" is official. Let's cheat too! *I fail to see the point though. If it's a programming language shootout, does it make sense to offload the meat of the processing to GMP?* *Do they intend to measure the FFI performance?* — Stephen
_______________________________________________ Chicken-users mailing list Chicken-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/chicken-users
