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Stefano Tommesani

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  • Multi-thread - SIMD on x64/x86 - Software - Video

    AltaLux 3.0: choose what to enhance

    September 6, 2026

    AltaLux 3.0 brings optional AI object selection to IrfanView, reduces colored noise in lifted shadows, and adds a smoother, zoomable preview. Object selection runs locally on your CPU.

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  • Multi-thread - SIMD on x64/x86 - Testing - Video

    How benchmarks guided Codex to faster kernels in AltaLux V2

    September 1, 2026

    The AltaLux V2 plugin enhances image processing through a multi-layered approach using CLAHE, improving local contrast but requiring more computation. Optimization focused on kernel vectorization using SIMD, with benchmarks guiding performance. The process revealed limitations of SIMD in certain operations and transitioned from SSE2 to SSSE3 for efficiency, ensuring an…

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  • SIMD on x64/x86

    SSE3: the small SIMD extension that made horizontal operations easier

    June 24, 2020

    SSE3 is one of the easiest SIMD instruction sets to misunderstand. Compared with MMX, SSE, and SSE2, it did not introduce a new vector register file, it did not widen vectors beyond 128 bits, and it did not radically change the programming model. Instead, SSE3 added a small set of…

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  • Software

    About me

    September 27, 2010

    Profile Software engineering leader with more than 20 years of experience, including over a decade managing teams. Led distributed teams of up to 14 developers at AWS RDS and Amazon Robotics, delivering cloud and robotics platforms with measurable gains in cost, reliability, and operational efficiency. Pairs people leadership and product…

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Recent Posts

  • AltaLux 3.0: choose what to enhance
  • From API dependencies to portfolios of Suppliers
  • How benchmarks guided Codex to faster kernels in AltaLux V2
  • AltaLux 2.0: a new multiscale engine and a simpler way to enhance images
  • Terminal thinking

Downloads

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AltaLux v. 3.0.2 plugin for IrfanView – Segmentation add-on installer
0.00 KB 1 file(s)
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AltaLux v. 3.0.2 plugin for IrfanView – Segmentation add-on
0.00 KB 1 file(s)
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AltaLux v. 3.0.2 plugin for IrfanView - x86 version
0.24 KB 1 file(s)
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AltaLux v. 3.0.2 plugin for IrfanView - x64 version
0.24 KB 1 file(s)
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Vigilo 0.9.0
0.00 KB 1 file(s)

Vintage CPUs of the day

  • Intel Pentium III 500/100 Intel Pentium III 500/100
  • IBM Blue Lightning DX2 IBM Blue Lightning DX2
  • AMD Duron 800 MHz AMD Duron 800 MHz
  • AMD Sempron 3000+ AMD Sempron 3000+

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