Message 83795 - Python tracker

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Author	vstinner
Recipients	mark.dickinson, pitrou, vstinner
Date	2009-03-18.23:27:20
SpamBayes Score	2.0131713e-10
Marked as misclassified	No
Message-id	<1237418842.4.0.379665741187.issue5512@psf.upfronthosting.co.za>
In-reply-to

Content
My numbers: # No patch $ ./python /home/haypo/pidigits-2.py 3000 Python 3.1a1+ (py3k:70466, Mar 18 2009, 23:56:06) [GCC 4.3.2] CPU: 64 bits, little endian PyLong: base=2^30, sizeof(digit)=32 bits (...) Best Time; 2300.2 ms # With faster_integer_division.patch (...) Best Time; 1138.1 ms Ok, it's two times faster on 64 bits CPU!!! Other notes about pidigits: - missing header (no author name, no description) - pidigit should also write the number of digits in its output to avoid mistakes in comparaisons

My numbers:

# No patch
$ ./python /home/haypo/pidigits-2.py 3000
Python 3.1a1+ (py3k:70466, Mar 18 2009, 23:56:06)
[GCC 4.3.2]
CPU: 64 bits, little endian
PyLong: base=2^30, sizeof(digit)=32 bits
(...)
Best Time; 2300.2 ms

# With faster_integer_division.patch
(...)
Best Time; 1138.1 ms

Ok, it's two times faster on 64 bits CPU!!!

Other notes about pidigits:
 - missing header (no author name, no description)
 - pidigit should also write the number of digits in its output to 
avoid mistakes in comparaisons

History
Date	User	Action	Args
2009-03-18 23:27:22	vstinner	set	recipients: + vstinner, mark.dickinson, pitrou
2009-03-18 23:27:22	vstinner	set	messageid: <1237418842.4.0.379665741187.issue5512@psf.upfronthosting.co.za>
2009-03-18 23:27:21	vstinner	link	issue5512 messages
2009-03-18 23:27:20	vstinner	create