I have a Python program that runs too slow for some inputs. I would like to speed it up without rewriting any code. Psyco seemed like exactly what I need, until I saw that it only works on a 32-bit architecture. I work in an environment of Sun Ultras that are all 64- bit. However, the Psyco docs say this:
"Psyco does not support the 64-bit x86 architecture, unless you have a Python compiled in 32-bit compatibility mode."
Would it make sense to compile Python in the 32-bit compatibility mode so I can use Psyco? What would I lose in that mode, if anything? Thanks.
On Nov 12, 12:06 pm, "Russ P." <russ.paie...@gmail.com> wrote:
> I have a Python program that runs too slow for some inputs. I would > like to speed it up without rewriting any code. Psyco seemed like > exactly what I need, until I saw that it only works on a 32-bit > architecture. I work in an environment of Sun Ultras that are all 64- > bit. However, the Psyco docs say this:
> "Psyco does not support the 64-bit x86 architecture, unless you have a > Python compiled in 32-bit compatibility mode."
> Would it make sense to compile Python in the 32-bit compatibility mode > so I can use Psyco? What would I lose in that mode, if anything? > Thanks.
> I have a Python program that runs too slow for some inputs. I would > like to speed it up without rewriting any code. Psyco seemed like > exactly what I need, until I saw that it only works on a 32-bit > architecture. I work in an environment of Sun Ultras that are all 64- > bit. However, the Psyco docs say this:
> "Psyco does not support the 64-bit x86 architecture, unless you have a > Python compiled in 32-bit compatibility mode."
> Would it make sense to compile Python in the 32-bit compatibility mode > so I can use Psyco? What would I lose in that mode, if anything? > Thanks.
Isn't the SUN Ultra using an ULTRA-Sparc core? If so, the point is moot.
> > I have a Python program that runs too slow for some inputs. I would > > like to speed it up without rewriting any code. Psyco seemed like > > exactly what I need, until I saw that it only works on a 32-bit > > architecture. I work in an environment of Sun Ultras that are all 64- > > bit. However, the Psyco docs say this:
> > "Psyco does not support the 64-bit x86 architecture, unless you have a > > Python compiled in 32-bit compatibility mode."
> > Would it make sense to compile Python in the 32-bit compatibility mode > > so I can use Psyco? What would I lose in that mode, if anything? > > Thanks.
> Isn't the SUN Ultra using an ULTRA-Sparc core? If so, the point is moot.
On Nov 12, 12:06 pm, "Russ P." <russ.paie...@gmail.com> wrote:
> I have a Python program that runs too slow for some inputs. I would > like to speed it up without rewriting any code. Psyco seemed like > exactly what I need, until I saw that it only works on a 32-bit > architecture. I work in an environment of Sun Ultras that are all 64- > bit. However, the Psyco docs say this:
> "Psyco does not support the 64-bit x86 architecture, unless you have a > Python compiled in 32-bit compatibility mode."
> Would it make sense to compile Python in the 32-bit compatibility mode > so I can use Psyco? What would I lose in that mode, if anything? > Thanks.
I just stumbled across "unladen swallow," a "faster implementation of Python." Is it ready for operational usage? How does it compare to Psyco? I poked around their website a bit, but I don't see answers to those questions. Thanks.
> I just stumbled across "unladen swallow," a "faster implementation of > Python." Is it ready for operational usage? How does it compare to > Psyco? I poked around their website a bit, but I don't see answers to > those questions. Thanks.
I've tried a few things with it. It mostly works, but it isn't actually faster at normal programs. I've been told their target is for long running processes where JIT and similar can speed up the inner loops etc etc. Certainly makes sense for google apps in python so perhaps that's the intended end use. -- Robin Becker
> I just stumbled across "unladen swallow," a "faster implementation of > Python." Is it ready for operational usage? How does it compare to > Psyco? I poked around their website a bit, but I don't see answers to > those questions. Thanks.
I've tried a few things with it. It mostly works, but it isn't actually faster at normal programs. I've been told their target is for long running processes where JIT and similar can speed up the inner loops etc etc. Certainly makes sense for google apps in python so perhaps that's the intended end use. -- Robin Becker
Russ P. wrote: > Would it make sense to compile Python in the 32-bit compatibility mode > so I can use Psyco? What would I lose in that mode, if anything? > Thanks.
You won't be able to access large amounts of memory in 32 bit mode. Also, the x86-64 mode has more CPU registers than x86 mode, so Python will typically run faster in 64 bit mode (this is more pronounced in AMD processors, in my experience).
It will depend on your application whether 32 bit mode plus Psyco is faster than 64 bit mode.
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