32-bit

Basically, what is the best way to go about storing and using dense matrices in python? I have a project that generates similarity metrics between every item in an array. Each item is a custom class, and stores a pointer to the other class and a number representing it's "closeness" to that class. Right now, it works brilliantly up to about ~8000 items, after which it fails with a out-of-memory error. Basically, if you assume that each comparison uses ~30 (seems accurate based on testing) bytes to store the similarity, that means the total required memory is: numItems^2 * itemSize = Memory So

I'm having a problem when I try to build my solution in C# Express 2008. I need to build it for 32-bit architecture, but it always build for 64-bit. In Visual Studio 2008 I can choose the architecture, but I can't find this option in C# Express. Is there a way to do this in C# Express? Jon Skeet Have a look at what the differences look like in the project file in the full Visual Studio, and hand-craft the same edits to your C# Express project - VS will respect those changes, even if it won't let you make them from within the IDE. EDIT: As Jeff points out in the comments, if you go to Tools ->

I just need to write a simple batch file just to run a vbscript. Both the vbscript and the batch file are in the same folder and is in the SysWOW64 directory as the vbscript can only be execute in that directory. Currently my batch file is as follows: @echo off %WINDIR%\SysWOW64\cmd.exe cscript necdaily.vbs But the vbscript wasn't executed and just the command prompt is open. Can anyone tell me how can i execute the vbscript when i run this batch file? Thanks. You can use %~dp0 to get the path of the currently running batch file. Edited to change directory to the VBS location before running If

Jon Bentley in Column 1 of his book programming pearls introduces a technique for sorting a sequence of non-zero positive integers using bit vectors. I have taken the program bitsort.c from here and pasted it below: /* Copyright (C) 1999 Lucent Technologies */ /* From 'Programming Pearls' by Jon Bentley */ /* bitsort.c -- bitmap sort from Column 1 * Sort distinct integers in the range [0..N-1] */ #include <stdio.h> #define BITSPERWORD 32 #define SHIFT 5 #define MASK 0x1F #define N 10000000 int a[1 + N/BITSPERWORD]; void set(int i) { int sh = i>>SHIFT; a[i>>SHIFT] |= (1<<(i & MASK)); } void clr

What do 16-bit, 32-bit and 64-bit architectures mean in case of Microprocessors and/or Operating Systems? In case of Microprocessors, does it mean maximum size of General Purpose Register s or size of Integer or number of Address-line s or number of Data Bus line s or what? What do we mean by saying " DOS is a 16-bit OS ", " Windows in a 32-bit OS ", etc...? The difference comes down to the bit width of an instruction set passed to a general purpose register for operating on. 16 bits can operate on 2 bytes, 64 on 8 bytes of instruction at a time. You can often increase throughput of a

I've been wondering this for a long time since I've never had "formal" education on computer science (I'm in highschool), so please excuse my ignorance on the subject. On a platform that supports the three types of integers listed in the title, which one's better and why? (I know that every kind of int has a different length in memory, but I'm not sure what that means or how it affects performance or, from a developer's view point, which one has more advantages over the other). Thank you in advance for your help. "Better" is a subjective term, but some integers are more performant on certain

so the questions as in the title, I need to run my server application in Tomcat on a System which is 32 bit Windows XP, I am working and compiling on my 64 bit Windows 7 in Eclipse. How do I compile it to 32 bit, what do I need to do? I assume it won't work on the 32 bit Windows when I'm compiling it on a 64 bit machine? Java doesn't build 32-bit or 64-bit applications - bytecode is portable across different bit architectures. The only exception is native libraries that you might be using in your code. If there are any then you will have to manually compile those for the respective platform.