Stefano Tommesani

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Results 101 - 115 of 115

Programming/SIMD
The MMX instructions are supported by every x86 processor introduced in the market after the venerable Intel Pentium MMX, so it should be fairly safe to assume that the processor that your code is running on has MMX instructions. But checking ...
Tuesday, 30 November 1999 | Print | PDF | Read more
Programming/SIMD
The Intel P6 core, introduced with the Pentium Pro processor and used in all current Intel processors, features a RISC-like microarchitecture and an out-of-order execution unit, representing a radical shift from previous designs. The P6's new...
Tuesday, 30 November 1999 | Print | PDF | Read more
Programming/SIMD
The following table lists the Instruction Sets supported by each processor. Processor MMX Extended MMX SSE SSE2 3DNow! Intel Pentium Intel Pentium MMX ...
Tuesday, 30 November 1999 | Print | PDF | Read more
Programming/SIMD
The following table summarizes the latencies of MMX/iSSE instructions on the Intel Pentium III and Pentium 4 processors, and on the AMD Athlon processor: Instruction Pentium III Pentium 4 AMD Athlon MOVD mm,r32 1...
Tuesday, 30 November 1999 | Print | PDF | Read more
Programming/SIMD
The recent arrival of the Intel Pentium 4 processor has generated the usual flurry of benchmarks and comments, most of them emphasizing that current software does not fully exploit the power of this new architecture (click here for an overview...
Tuesday, 30 November 1999 | Print | PDF | Read more
Programming/SIMD
The forthcoming Intel Pentium 4 processor (code-named Willamette) will feature a new set of SIMD instructions that improve the capabilities of both the MMX and SSE instruction sets. The key benefits of SSE2 are that MMX instructions can work...
Tuesday, 30 November 1999 | Print | PDF | Read more
Programming/SIMD
Data referenced by a program can have temporal (data will be used again) or spatial (data will be in adjacent locations, such as the same cache line) locality, but some multimedia data types are referenced once and not reused in the immediate...
Tuesday, 30 November 1999 | Print | PDF | Read more
Programming/SIMD
A basic building block operation in geometry involves computing divisions and square roots. For instance, transformation often involves dividing each x, y, z coordinate by the W perspective coordinate; normalization is another common geometry...
Tuesday, 30 November 1999 | Print | PDF | Read more
Programming/SIMD
LDMXCSR loads the SSE control and status register from memory, while STMXCSR stores it to memory. FXSAVE saves FP, MMX and SSE state to memory, while FXRSTOR loads it from memory.
Tuesday, 30 November 1999 | Print | PDF | Read more
Programming/SIMD
11
Tuesday, 30 November 1999 | Print | PDF
Programming/GPGPU
Many notebooks on the market feature switchable graphics, that is, a notebook with an Intel CPU with built-in HD Graphics technology, as well as an additional AMD HD Radeon GPU or nVidia GeForce GPU. During normal usage, just the Intel HD...
Tuesday, 30 November 1999 | Print | PDF | Read more
Programming/Web
Sometimes, this site goes down, and the following homepage appears: The jos_session gets corrupted, a frequent issue with Joomla 1.5.x installations. Luckily, fixing this issue is quite simple, just log into the phpMyAdmin site (usually at the...
Tuesday, 30 November 1999 | Print | PDF | Read more
Programming/Software
We recently heard about two really far branches in our codebase. Your mission, should you choose to accept it, is finding the changes and merging them. So I try a GIT diff within Atlassian SourceTree, my GIT client of choice, and the result is...
Tuesday, 30 November 1999 | Print | PDF | Read more
Programming/Software
I have just released the new version of the AltaLux plug-in for IrfanView on GitHub, clone it now! There are some good reasons for taking a peek: having a look at how to write a plugin for IrfanView discovering how the AltaLux algorithm...
Tuesday, 30 November 1999 | Print | PDF | Read more
Various/Audio
As the yearly dynamic range day is close (March 31st), let's have a look at one of the biggest audio massacres of the year, Ed Sheeran's "Castle on the hill". First time I heard the song, I thought my headphones just got broken, it's really that...
Tuesday, 30 November 1999 | Print | PDF | Read more
 

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