-! Copyright (C) 2008, 2009 Slava Pestov.
+! Copyright (C) 2008, 2010 Slava Pestov.
! See http://factorcode.org/license.txt for BSD license.
-USING: accessors fry kernel locals math math.constants
-math.functions math.vectors math.vectors.simd prettyprint
-combinators.smart sequences hints struct-arrays classes.struct ;
+USING: accessors alien.c-types kernel math math.constants
+math.functions math.vectors math.vectors.simd.cords math.parser
+combinators.smart sequences classes.struct specialized-arrays io ;
IN: benchmark.nbody-simd
: solar-mass ( -- x ) 4 pi sq * ; inline
{ velocity double-4 }
{ mass double } ;
+SPECIALIZED-ARRAY: body
+
: <body> ( location velocity mass -- body )
- [ days-per-year v*n ] [ solar-mass * ] bi* body <struct-boa> ; inline
+ [ days-per-year v*n ] [ solar-mass * ] bi* body boa ; inline
: <jupiter> ( -- body )
- double-4{ 4.84143144246472090e+00 -1.16032004402742839e+00 -1.03622044471123109e-01 0.0 }
+ double-4{ 4.84143144246472090e00 -1.16032004402742839e00 -1.03622044471123109e-01 0.0 }
double-4{ 1.66007664274403694e-03 7.69901118419740425e-03 -6.90460016972063023e-05 0.0 }
9.54791938424326609e-04
<body> ;
: <saturn> ( -- body )
- double-4{ 8.34336671824457987e+00 4.12479856412430479e+00 -4.03523417114321381e-01 0.0 }
+ double-4{ 8.34336671824457987e00 4.12479856412430479e00 -4.03523417114321381e-01 0.0 }
double-4{ -2.76742510726862411e-03 4.99852801234917238e-03 2.30417297573763929e-05 0.0 }
2.85885980666130812e-04
<body> ;
: <uranus> ( -- body )
- double-4{ 1.28943695621391310e+01 -1.51111514016986312e+01 -2.23307578892655734e-01 0.0 }
+ double-4{ 1.28943695621391310e01 -1.51111514016986312e01 -2.23307578892655734e-01 0.0 }
double-4{ 2.96460137564761618e-03 2.37847173959480950e-03 -2.96589568540237556e-05 0.0 }
4.36624404335156298e-05
<body> ;
: <neptune> ( -- body )
- double-4{ 1.53796971148509165e+01 -2.59193146099879641e+01 1.79258772950371181e-01 0.0 }
+ double-4{ 1.53796971148509165e01 -2.59193146099879641e01 1.79258772950371181e-01 0.0 }
double-4{ 2.68067772490389322e-03 1.62824170038242295e-03 -9.51592254519715870e-05 0.0 }
5.15138902046611451e-05
<body> ;
: <sun> ( -- body )
double-4{ 0 0 0 0 } double-4{ 0 0 0 0 } 1 <body> ;
-
+
: offset-momentum ( body offset -- body )
vneg solar-mass v/n >>velocity ; inline
-TUPLE: nbody-system { bodies struct-array read-only } ;
-
: init-bodies ( bodies -- )
[ first ] [ [ [ velocity>> ] [ mass>> ] bi v*n ] [ v+ ] map-reduce ] bi
offset-momentum drop ; inline
: <nbody-system> ( -- system )
[ <sun> <jupiter> <saturn> <uranus> <neptune> ]
- struct-array{ body } output>sequence nbody-system boa
- dup bodies>> init-bodies ; inline
+ body-array{ } output>sequence
+ dup init-bodies ; inline
-:: each-pair ( bodies pair-quot: ( other-body body -- ) each-quot: ( body -- ) -- )
+:: each-pair ( ... bodies pair-quot: ( ... other-body body -- ... ) each-quot: ( ... body -- ... ) -- )
bodies [| body i |
body each-quot call
bodies i 1 + tail-slice [
[ [ other-body ] 2dip '[ body mass>> _ * _ n*v v+ ] change-velocity drop ] 2bi ; inline
: advance ( system dt -- )
- [ bodies>> ] dip
[ '[ _ update-velocity ] [ drop ] each-pair ]
[ '[ _ update-position ] each ]
2bi ; inline
[ [ mass>> ] bi@ * ] [ [ location>> ] bi@ distance ] 2bi / ; inline
: energy ( system -- x )
- [ 0.0 ] dip bodies>> [ newton's-law - ] [ inertia + ] each-pair ; inline
+ [ 0.0 ] dip [ newton's-law - ] [ inertia + ] each-pair ; inline
: nbody ( n -- )
>fixnum
<nbody-system>
- [ energy . ] [ '[ _ 0.01 advance ] times ] [ energy . ] tri ;
+ [ energy number>string print ]
+ [ '[ _ 0.01 advance ] times ]
+ [ energy number>string print ] tri ;
-: nbody-main ( -- ) 1000000 nbody ;
+: nbody-simd-benchmark ( -- ) 1000000 nbody ;
-MAIN: nbody-main
+MAIN: nbody-simd-benchmark
projects / factor.git / blobdiff