On Wed, 2001-10-31 at 08:59, Camm Maguire wrote:
> If indeed gcl offers certain features which are unique/superior to
> other free alternatives out there, then I for one would be interested
> in helping maintain it, perhaps even coordinating the project.
I hope I didn't sound too discouraging about becoming the new maintainer
for GCL in my previous post on the subject. I really only wanted to
start a discussion.
> But I
> really don't have enough info to make a fair comparison. Would some
> kind knowledgeable soul provide a feature/performance summary of
> cmulisp, clisp, and gcl, and post here?
I have a very preliminary set of benchmarks, subject to the following
disclaimers:
0) REALLY BIG DISCLAIMER: I didn't do these tests under controlled
conditions. The results, however, are qualitatively consistent with what
I have seen in the past. Nonetheless, they should be treated with some
skepticism.
1) I don't think these are particularly good. benchmarks. I think it
would be really useful to hear what sort of real calculations people
have done where speed really mattered. I don't have any examples handy.
2) I only consider speed, not memory usage.
The system:
My 900MHz Linux machine.
The benchmarks:
1) expand((x+y+z)^300)$
2) Run the entire maxima test suite.
Result summary (times in seconds):
1) clisp: 161, cmucl: 40, gcl: 147
2) clisp: 7.2, cmucl: 3.3, gcl: 5.8
The raw results:
clisp:
Benchmark 1:
(C2) expand((x+y+z)^300)$
Evaluation took 161.09 seconds (166.67 elapsed)
Benchmark 2:
Congratulations: No differences!
No Errors Found
Real time: 7.214946f0 sec.
Run time: 7.04f0 sec.
Space: 24513052 Bytes
GC: 36, GC time: 0.74f0 sec.
cmucl:
Benchmark 1:
(C2) expand((x+y+z)^300)$
Evaluation took 40.44 seconds (42.31 elapsed)
Benchmark 2:
Congratulations: No differences!
No Errors Found
Evaluation took:
3.31f0 seconds of real time
2.91f0 seconds of user run time
0.13f0 seconds of system run time
[Run times include 0.53f0 seconds GC run time]
5249 page faults and
33199440 bytes consed.
gcl:
Bench 1:
(C2) expand((x+y+z)^300)$
Evaluation took 147.61 seconds (156.85 elapsed)
Benchmark 2:
Congratulations: No differences!
No Errors Found
real time : 5.800 secs
run time : 5.650 secs
--Jim