Path: csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!feeder.erje.net!eu.feeder.erje.net!newsfeed.freenet.ag!news2.euro.net!newsgate.cistron.nl!newsgate.news.xs4all.nl!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 0.184 X-Spam-Level: * X-Spam-Evidence: '*H*': 0.63; '*S*': 0.00; 'cache': 0.07; 'subject:How': 0.10; 'caches': 0.16; 'harvard': 0.16; 'user.': 0.19; 'code,': 0.22; '+0000': 0.22; 'to:name:python- list@python.org': 0.22; 'bytes': 0.24; 'integer': 0.24; 'received:65.55.116': 0.24; '>': 0.26; 'header:In-Reply-To:1': 0.27; 'point': 0.28; 'url:mailman': 0.30; 'stuff': 0.32; 'url:python': 0.33; 'entirely': 0.33; 'totally': 0.33; 'date:': 0.34; 'subject:from': 0.34; 'common': 0.35; 'there': 0.35; 'sequence': 0.36; 'url:listinfo': 0.36; 'url:org': 0.36; 'two': 0.37; 'email addr:python.org': 0.37; 'architecture': 0.38; 'weekend': 0.38; 'to:addr:python-list': 0.38; 'fact': 0.38; 'von': 0.38; 'subject:': 0.39; 'embedded': 0.39; 'to:addr:python.org': 0.39; 'space': 0.40; 'url:mail': 0.40; 'how': 0.40; 'even': 0.60; 'worry': 0.60; 'world.': 0.61; 'address': 0.63; 're:': 0.63; 'email name:python-list': 0.65; 'subject:get': 0.81; 'aspect.': 0.84; 'phil': 0.84; 'edwards': 0.91; '2013': 0.98 X-TMN: [3QI/AwpRJUTK2H9VsVJnjwed1c2ZF8hI] X-Originating-Email: [carlosnepomuceno@outlook.com] Content-Type: multipart/alternative; boundary="_6a434ec4-5959-40ab-8696-76165a74b794_" From: Carlos Nepomuceno To: "python-list@python.org" Subject: RE: How to get an integer from a sequence of bytes Date: Tue, 4 Jun 2013 16:58:04 +0300 Importance: Normal In-Reply-To: References: , , , , , , , , , MIME-Version: 1.0 X-OriginalArrivalTime: 04 Jun 2013 13:58:04.0591 (UTC) FILETIME=[88BD2BF0:01CE612B] 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: 78 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1370354353 news.xs4all.nl 15914 [2001:888:2000:d::a6]:54483 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:46905 --_6a434ec4-5959-40ab-8696-76165a74b794_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable > From: invalid@invalid.invalid > Subject: Re: How to get an integer from a sequence of bytes > Date: Tue=2C 4 Jun 2013 13:42:46 +0000 > To: python-list@python.org [...] > VN designs are still very common in smaller CPUs (embedded stuff). DSPs perhaps... not CPUs. Even ARMs are Harvard variants. > Even modern desktop CPUs are "logically" still Von Neumann designs > from the programmer's point of view (there's only a single address > space for both data and instructions). The fact that there are two > sparate caches is almost entirely hidden from the user. If you start > to do stuff like write self-modifying code=2C then _may_ start having to > worry about cache coherency. Code/data separation isn't the only aspect. VN architecture is totally seri= al=2C even for RAM. It's been a while since we've got into the multi-core=2C multipath world. E= ven in embedded devices. > --=20 > Grant Edwards grant.b.edwards Yow! I request a weeke= nd in > at Havana with Phil Silve= rs! > gmail.com =20 > --=20 > http://mail.python.org/mailman/listinfo/python-list = --_6a434ec4-5959-40ab-8696-76165a74b794_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable


>=3B From: invali= d@invalid.invalid
>=3B Subject: Re: How to get an integer from a seque= nce of bytes
>=3B Date: Tue=2C 4 Jun 2013 13:42:46 +0000
>=3B To:= python-list@python.org
[...]
>=3B VN designs are still very common= in smaller CPUs (embedded stuff).

DSPs perhaps... not CPUs. Even AR= Ms are Harvard variants.

>=3B Even modern desktop CPUs are "logica= lly" still Von Neumann designs
>=3B from the programmer's point of vie= w (there's only a single address
>=3B space for both data and instruct= ions). The fact that there are two
>=3B sparate caches is almost enti= rely hidden from the user. If you start
>=3B to do stuff like write s= elf-modifying code=2C then _may_ start having to
>=3B worry about cach= e coherency.

Code/data separation isn't the only aspect. VN architec= ture is totally serial=2C even for RAM.

It's been a while since we'v= e got into the multi-core=2C multipath world. Even in embedded devices.
=
>=3B --
>=3B Grant Edwards grant.b.edwards = Yow! I request a weekend in
>=3B at= Havana with Phil Silvers!
>=3B = gmail.com
>=3B --
>=3B http://mail.python.org/= mailman/listinfo/python-list
= --_6a434ec4-5959-40ab-8696-76165a74b794_--