Stefano Tommesani

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Results 41 - 60 of 114

Programming/Software
After adding your kid, AskWatch will start grabbing data about your son for a few seconds, or a bit more depending on the speed of your internet connection. In the main window, a new tab with the name of your son will be added, and the new screen...
Wednesday, 07 August 2013 | Print | PDF |  E-mail | Report | More...
Programming/Web
Today I have encountered the following error message in a major web site: However: there was no warning on the web page about this limitation (e.g. "type up to 3000 chars") there was no warning while typing that I was entering too much...
Saturday, 20 July 2013 | Print | PDF |  E-mail | Report | More...
Programming/OOD / OOP
In the article comparing CPU and GPU implementations of the median filter, the class was designed to receive image buffers with the AddSample method and return a pointer to the image buffer with the GetMedianImage method: class TM_CPURefImpl : ...
Monday, 03 June 2013 | Print | PDF |  E-mail | Report | More...
Programming/Software
Back in 2000, Quexal changed the way programmers had to deal with MMX programming. A friendly user interface simplified building parallel versions of algorithms, an optimizing compiler made sure that the resulting code would run fast, and a visual...
Saturday, 01 June 2013 | Print | PDF |  E-mail | Report | More...
Programming/Software
Quickly convert a digipak CD cover into a traditional jewel-box CD back cover! Just drop the CD cover to convert into the source area, AltaCdCover will automatically recognize if it contains both front and back sides or only the back side, drop...
Saturday, 01 June 2013 | Print | PDF |  E-mail | Report | More...
Programming/OOD / OOP
FizzBuzz is described as: Write a program that prints the integers from 1 to 100. But for multiples of three print "Fizz" instead of the number and for the multiples of five print "Buzz". For numbers which are multiples of both three and five...
Monday, 27 May 2013 | Print | PDF |  E-mail | Report | More...
Programming/SIMD
Floating-Point Intrinsics Arithmetic Operation Intrinsics Intrinsic name Corresponding instruction Operation R0 value R1 value _mm_add_sd ADDSD Adds a0 [op] b0 a1 ...
Monday, 27 May 2013 | Print | PDF |  E-mail | Report | More...
Programming/SIMD
General Support Intrinsics Intrinsic name Operation Signed Saturation Assembly instruction _mm_empty Empties MM state Not applicable Not applicable EMMS _mm_cvtsi32_si64 Converts from int Not applicable Not...
Monday, 27 May 2013 | Print | PDF |  E-mail | Report | More...
Programming/SIMD
Packed Arithmetic Intrinsics Intrinsic Instruction Operation R0 R1 R2 R3 _mm_add_ss ADDSS Adds a0 [op] b0 a1 a2 ...
Monday, 27 May 2013 | Print | PDF |  E-mail | Report | More...
Programming/GPGPU
The temporal median algorithm compares the same pixel in consecutive images in a sequence, and returns the median value of the pixel, i.e. the pixel value that has the same number of lower and higher values (an easy way to visualize this is imaging...
Tuesday, 21 May 2013 | Print | PDF |  E-mail | Report | More...
Programming/SIMD
70
Monday, 20 May 2013 | Print | PDF |  E-mail | Report
Programming/Web
Back in 2010, security researcher Ron Bowes wrote a Ruby script that downloads information from Facebook's user directory, a searchable index of public profile pages. The directory did not expose a user's entire profile and only exposed...
Friday, 17 May 2013 | Print | PDF |  E-mail | Report | More...
Programming/Software
AltaLux is an image processing technology that can significantly enhance the quality of images and videos with poor lighting conditions. AltaLux/Demo is a Windows sample application that lets you enhance the quality of JPEG images for free...
Friday, 03 May 2013 | Print | PDF |  E-mail | Report | More...
Programming/Multi-thread
A new article about using Intel TBB is here. It contains examples using C++ lambdas and joining multi-threaded loops with SIMD code In this article we will transform a plain C loop into a multi-threaded version using Intel Thread Building Blocks...
Wednesday, 01 May 2013 | Print | PDF |  E-mail | Report | More...
Programming/Multi-thread
This is not the first article on this site that discusses how to use the Intel Thread Building Blocks library to spread the computation of an image-processing kernel over multiple threads: the article named "Multi thread loops with Intel TBB" showed...
Wednesday, 01 May 2013 | Print | PDF |  E-mail | Report | More...
Programming/SIMD
In the introduction we have outlined the applications that require 64-bit precision, scientific simulations and CAD/CAM being notable examples. However, the transition from normal scalar code to 64-bit floating-point SSE2 code is complex and it...
Friday, 26 April 2013 | Print | PDF |  E-mail | Report | More...
Programming/SIMD
I’'m quite sure that Intel would not like to see SSE2 named 128-bit MMX. In fact, MMX has a bad reputation: the Intel marketing hype pushed it as an universal solution to multimedia requirements, but at the same time the gaming industry switched...
Friday, 26 April 2013 | Print | PDF |  E-mail | Report | More...
59. 3DNow!
Programming/SIMD
The latest trend in PC games is 3D graphics: during the past few years, almost all kinds of games have turned to 3D graphics, greatly increasing the demand of processors with strong floating-point performance, because the front end of a typical...
Friday, 26 April 2013 | Print | PDF |  E-mail | Report | More...
Programming/SIMD
The Streaming SIMD Extensions enhance the Intel x86 architecture in four ways: 8 new 128-bit SIMD floating-point registers that can be directly addressed; 50 new instructions that work on packed floating-point data; 8...
Friday, 26 April 2013 | Print | PDF |  E-mail | Report | More...

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There are many ways to extract data elements from web pages, almost all of them prettier and cooler than the method proposed here, but as we are in an hurry, let's get that data quickly, ok? Suppose we have to extract the
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Unit-testing file I/O 26 November 2017, 12.09 Testing
Unit-testing file I/O
Two good news: file I/O is unit-testable, and it is surprisingly easy to do. Let's see how it works! A software no-one asked for First, we need a piece of software that deals with files and that has to be unit-tested. The
Fixing Git pull errors in SourceTree 10 April 2017, 01.44 Software
Fixing Git pull errors in SourceTree
If you encounter the following error when pulling a repository in SourceTree: VirtualAlloc pointer is null, Win32 error 487 it is due to to the Cygwin system failing to allocate a 5 MB large chunk of memory for its heap at