The stuff you do are not representative of 100% of programming
conducted in the world. Not even 90% and probably not even 50% of
programming work is similar to what you do.
The fact you never use sophisticated math doesn't mean this guy doesn't
either.
Personally, I've used pyrex a lot. And it was
Hi John,
John Machin escribió:
>On 28/05/2006 12:10 AM, Gonzalo Monzón wrote:
>
>[good advice snipped]
>
>
>
>>Example A:
>>This code is more than 80 times faster than a "easy" Python
>>implementation. For every call, it does some bitwise operations and does
>>an array lookup for every string
On 28/05/2006 12:10 AM, Gonzalo Monzón wrote:
[good advice snipped]
>
> Example A:
> This code is more than 80 times faster than a "easy" Python
> implementation. For every call, it does some bitwise operations and does
> an array lookup for every string character from argument. Its a lot
> f
Hi Jim,
It depends a lot on what you're doing. You will get speed up from Pyrex
or wrapping C code if you understand how does it work internally, and to
speed up you application via coding *only* Pyrex parts (I mean don't
using it for wrapping C but implementing in Pyrex), it limits a lot the
Jim Lewis \/\/|20+3:
> I'm not planning to write C functions. My understanding is that by
> using cdefs in the python code one can gain substantial speed. I'm
> trying to find a description of how to modify python code in more
> detail so it runs fast under pyrex.
I've used pyrex to speed up my co
> I never had an opportunity to do any more sophisticated math than simple
> adding,
multiplying, subtracting and dividing.
Neither is the primes example doing anything more sophisticated than
basic arithmetic but it's 50 times faster.
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Jim Lewis napisal:
>>main point of Pyrex is ease of wrapping, not of speeding-up.
>
> Supposedly the primes example is 50 times faster.
How often you perform primes calculations in your programs? In my >10
years of professional career in writing business software I never had an
opportunity to do
> main point of Pyrex is ease of wrapping, not of speeding-up.
Supposedly the primes example is 50 times faster.
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You can gain substantial speed-ups in very certain cases, but the main
point of Pyrex is ease of wrapping, not of speeding-up.
Depending on what you're doing, rewriting in Pyrex or even in C, using
the Python/C API directly, might not gain you much.
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I'm not planning to write C functions. My understanding is that by
using cdefs in the python code one can gain substantial speed. I'm
trying to find a description of how to modify python code in more
detail so it runs fast under pyrex.
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Jim Lewis schrieb:
> Has anyone found a good link on exactly how to speed up code using
> pyrex? I found various info but the focus is usually not on code
> speedup.
The code speedup comes through the usage of C by pyrex itself, and using
it to put a thin layer over C-functions available/coded fo
Has anyone found a good link on exactly how to speed up code using
pyrex? I found various info but the focus is usually not on code
speedup.
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