35
(d2) (d + c + b + a + 1)
(c3) ratsimp(d2)$
Time= 4707 msecs (including 3043 msecs in GC)
totaltime CPUtime excluding GC machine
maxima GCL 10.3 ? 933Mhz
maxima GCL 11.0 ? 800Mhz
maxima CLISP 13.2 ? 800Mhz
maxima CMUCL 4.5 ? 800Mhz
maxima GCL 2.81 ? 850Mhz linux
maxima ACL6 3.27 * ? 933Mhz
mac421 27.0 2.0 933Mhz
ACL6 mac421 4.7 1.7 933Mhz
ACL6 = Allegro Common Lisp. mac421= last release of commercial Macsyma
* = fastest of 3 runs. first took 7.07 seconds, apparently not enough
memory allocated. Maxima = Maxima 5.5 probably.
There are 2 versions of maxima GCL reported. 2.81 sec from Bill Schelter,
which is achieved by reducing garbage collection time, first doing
:lisp (progn (allocate 'cons 8000 t) (allocate 'fixnum 1000 t)
(si::allocate-relocatable-pages 2000 t))
and
11.0 seconds recently posted here..
Note that to a first approximation, mac421 is also running in GCL,
though its garbage collection is clearly badly configured or maybe
just bad.