[Larceny-users] turning on optimizations

[Marijn Schouten (hkBst)]

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Hi,

I am trying to get more performance from my program by turning on optimizations.
However performance seems to be largely unaffected.

No extra optimization directives:
$ larceny -- -e "(require 'srfi-0)" ising.scm -e "(time (main 10 100))" -e "(quit)"
Larceny v0.97a4 (alpha test) (Mar 13 2009 15:30:01, precise:Linux:unified)
<snip />
Words allocated: 341821384
Words reclaimed: 0
Elapsed time...: 4782 ms (User: 4575 ms; System: 32 ms)
Elapsed GC time: 22 ms (CPU: 35 in 326 collections.)

All possible optimizations turned on:
$ larceny -- -e "(require 'srfi-0)(compiler-switches
'fast-unsafe)(benchmark-block-mode #t)" ising.scm -e "(time (main 10 100))" -e
"(quit)"
Larceny v0.97a4 (alpha test) (Mar 13 2009 15:30:01, precise:Linux:unified)
<snip />
Words allocated: 341821874
Words reclaimed: 0
Elapsed time...: 4714 ms (User: 4498 ms; System: 38 ms)
Elapsed GC time: 23 ms (CPU: 24 in 326 collections.)

Turning on similar optimizations in Gambit resulted in a twofold speed increase.

Then I tried to precompile my program with all optimizations:
Larceny v0.97a4 (alpha test) (Mar 13 2009 15:30:01, precise:Linux:unified)


Error: pass1-block must be modified to deal with the new regime for syntax
environments.
Entering debugger; type "?" for help.
debug>

Am I doing it wrong or is there something that is just not implemented yet here?

Thanks,

Marijn


PS My code is here
http://dynamo.iro.umontreal.ca/~gambit/wiki/images/9/90/Ising-20090315.scm

- --
Gods do not want you to think, lest they lose existence.
Religions do not want you to think, lest they lose power.

Marijn Schouten (hkBst), Gentoo Lisp project, Gentoo ML
<http://www.gentoo.org/proj/en/lisp/>, #gentoo-{lisp,ml} on FreeNode
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