[Maxima] openmcl bigfloat benchmark (was: Maxima + openmcl windows installer)
villate at fe.up.pt
Mon Dec 14 16:06:12 CST 2009
On Mon, 2009-12-14 at 21:52 +0100, Volker van Nek wrote:
> I have noticed that bigfloat computations are quite slow with Clozure.
I can confirm that with Maxima 5.10.1 + Lisp Clozure Common Lisp Version
1.3-RC1-r11719M (in Ubuntu amd64) even though CCL is very fast in
floating point calculations.
I used the following 3 benchmark commands:
1- bfloat(%pi), fpprec:10000$
2- bfloat(%pi), fpprec:100000$
3- rk([x*(y^2+2*x*y-x-15*y/4+1), y*(-2*x^2-x*y+y+15*x/4-1)],[x,
(numerical solution of a non-linear differential equation).
Results (times in seconds):
CLISP 2.44.1 SBCL 1.0.18 CCL 1.3-RC1-r11719M
Benchmark 1 0.0700 0.0500 0.4200
Benchmark 2 4.5700 3.3200 30.9300
Benchmark 3 7.6400 1.7600 1.5200
CCL is fastest one in floating-point calculations, but about 10 times
slower than SBCL in the bfloat calculation.
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