Ray tracer Benchmark

Source code

Optimisation	C++	Java (by Alex Jonas)	OCaml	SML (for MLton)	Stalin (by Jeff Siskind)	Lisp (by Juho Snellman)	Haskell (by Lennart Augustsson)
Minimal	ray.cpp	ray.java	ray.ml	ray.sml	ray.sc	ray.lisp	ray.hs
Tighter bounding volumes	ray.cpp	ray.java	ray.ml	ray.sml	ray.sc	ray.lisp	ray.hs
Partially specialised shadow intersection	ray.cpp	ray.java	ray.ml	ray.sml	ray.sc	ray.lisp	ray.hs
Fully specialised shadow intersection	ray.cpp	ray.java	ray.ml	ray.sml	ray.sc	ray.lisp	ray.hs
Low-level optimizations	ray.cpp	ray.java	ray.ml	ray.sml		ray.lisp	ray.hs

Compile commands

The following compiler versions and command-line arguments were used to generate the executables or heap images (32-bit then 64-bit):

C++: g++ 4.2.3:

g++ -O3 -ffast-math ray.cpp -o ray
g++ -O3 -ffast-math ray.cpp -o ray

Java: Sun's JDK 1.6:
```
javac ray.java
javac ray.java
```

OCaml: ocamlopt 3.10.0:

ocamlopt -rectypes -inline 100 -ffast-math ray.ml -o ray
ocamlopt -rectypes -inline 100 ray.ml -o ray

SML: MLton Debian package 20070826-1:
```
mlton ray.sml
mlton -align 8 ray.sml
```
SML: SML/NJ 110.65:
```
sml ray.sml
```

Lisp: SBCL 1.0.11:

sbcl --eval '(compile-file "ray.lisp")' --eval '(quit)'
sbcl --eval '(compile-file "ray.lisp")' --eval '(quit)'

Scheme: Stalin 0.11-4:

stalin -Ob -Om -On -Or -Ot -dP -dC -dh -q -d -db -architecture
IA32-align-double -no-clone-size-limit -split-even-if-no-widening -copt -O3
-copt -fomit-frame-pointer -copt -freg-struct-return -copt -malign-double -copt
-ffast-math ray
stalin -Ob -Om -On -Or -Ot -dP -dC -dh -q -d -db -no-clone-size-limit
-split-even-if-no-widening -copt -O3 -copt -fomit-frame-pointer -copt
-freg-struct-return -copt -ffast-math ray

Glasgow Haskell Compiler 6.8.1:

rm -f ray ray.hi ray.o; ghc-6.8.1 -O3 -fvia-C -funbox-strict-fields -optc-O3
-fexcess-precision -optc-ffast-math -funfolding-keeness-factor=10 ray.hs -o ray

Run commands

The following commands were used to run the programs:

C++:
```
./ray 9 512
```
Java:
```
java -server ray 9 512
```
OCaml:
```
./ray 9 512
```
SML:
```
./ray 9 512
```
SML:
```
sml @SMLload=ray 9 512
```

Lisp:

sbcl --noinform --eval '(load "ray.fasl")' --eval '(main 9 "image.pgm" 512)' --eval '(quit)'

Scheme:
```
./ray 9 512
```
Haskell:
```
./ray
```

Output

All of the programs generate the same ray traced image, containing

Figure: Ray traced scene.

Previous: Ray tracer language comparison

Next: Results