Path: csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!feeder.erje.net!eu.feeder.erje.net!newsfeed.datemas.de!rt.uk.eu.org!newsfeed.xs4all.nl!newsfeed3a.news.xs4all.nl!xs4all!post.news.xs4all.nl!not-for-mail Return-Path: X-Original-To: python-list@python.org Delivered-To: python-list@mail.python.org X-Spam-Status: OK 0.001 X-Spam-Evidence: '*H*': 1.00; '*S*': 0.00; 'subject:Windows': 0.02; 'subject:Python': 0.06; 'latter': 0.09; 'python': 0.11; 'from:addr:mrabarnett.plus.com': 0.16; 'from:addr:python': 0.16; 'from:name:mrab': 0.16; 'message-id:@mrabarnett.plus.com': 0.16; 'numpy': 0.16; 'received:192.168.1.4': 0.16; 'subject: \n ': 0.16; 'subject:between': 0.16; 'subject:bit': 0.16; 'index': 0.16; ':-)': 0.16; 'wrote:': 0.18; 'bit': 0.19; 'starts': 0.20; 'header :User-Agent:1': 0.23; 'header:In-Reply-To:1': 0.27; 'array': 0.29; 'long.': 0.31; 'subject:the': 0.34; 'subject:?': 0.36; 'should': 0.36; 'too': 0.37; 'to:addr:python-list': 0.38; 'to:addr:python.org': 0.39; '(that': 0.65 X-CM-Score: 0.00 X-CNFS-Analysis: v=2.1 cv=etNRz+ZX c=1 sm=1 tr=0 a=0nF1XD0wxitMEM03M9B4ZQ==:117 a=0nF1XD0wxitMEM03M9B4ZQ==:17 a=0Bzu9jTXAAAA:8 a=1oDRhzKAKukA:10 a=Buphia8J8A8A:10 a=ihvODaAuJD4A:10 a=IkcTkHD0fZMA:10 a=EBOSESyhAAAA:8 a=0bAqrOSy5i8hMVpsHMEA:9 a=QEXdDO2ut3YA:10 X-AUTH: mrabarnett:2500 Date: Tue, 13 May 2014 01:07:12 +0100 From: MRAB User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.5.0 MIME-Version: 1.0 To: python-list@python.org Subject: Re: What is the difference between 32 and 64 bit Python on Windows 7 64 bit? References: In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-BeenThere: python-list@python.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: General discussion list for the Python programming language List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Newsgroups: comp.lang.python Message-ID: Lines: 12 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1399939635 news.xs4all.nl 2861 [2001:888:2000:d::a6]:51799 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:71409 On 2014-05-13 00:41, Sturla Molden wrote: > On 12/05/14 15:42, Sturla Molden wrote: > >> - A one-dimensional NumPy array with dtype np.float64 can keep 16 GB of >> data before a 32 bit index is too small and Python starts to use long. A >> two-dimensional NumPy array with dtype np.float64 can keep 256 GB of >> data before a 32 bit index is too small. > > > Oops, the latter should be 34359738336 GB (that is, 32767 pentabytes) :) > Double oops, Sturla, it's petabyte (well, pebibyte actually). :-)