Category Archives: Fractals

Then and Now–Performance Improvements

In a recent post I made an offhand comment that in one fractal calculation scenario my new laptop is about 37,500 times faster than my old Amiga 1000. I suspected that in other fractal calculation scenarios the improvement is much … Continue reading

Posted in Fractals, Math, Performance, Programming | 3 Comments

Faster Fractals Through Better Scheduling

Performance improvements can come from many directions including better algorithms or micro-optimized inner loops. In this case I got a worthwhile speedup by working better with the Windows thread scheduler.

Posted in Fractals, Investigative Reporting, Performance, Programming, xperf | Tagged , | 8 Comments

Faster Fractals Through Algebra

I’ve been working on Fractal eXtreme on-and-off for years, and an important (and fun) part of working on it is optimizing the calculation of the Mandelbrot set, especially the high-precision math routines that allow deep-zooming. After working on this over … Continue reading

Posted in Fractals, Math, Programming | Tagged , | 24 Comments

x64 Instructions for Four Times Faster Math

Users sometimes assume that 64-bit computers (typically running x64 CPUs) will naturally run faster than 32-bit computers (typically running x86 CPUs). They often guess that they will run twice as fast. After all, 64 is twice as big as 32. … Continue reading

Posted in Fractals, Math, Performance, Programming | 2 Comments