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All posts in March 2021

Flexibility and Performance

Flexibility and Performance

Posted on March 25, 2021April 28, 2022Author Ivica BogosavljevićPosted in C++ Performance, Help the Compiler, Performance, Standard Library and PerformanceLeave a Reply

In this post we talk about how to write code that is both flexible and fast!

Speedscope: visualize what your program is doing and where it is spending time

Speedscope: visualize what your program is doing and where it is spending time

Posted on March 13, 2021March 19, 2022Author Ivica BogosavljevićPosted in Developer Tools, Performance, Performance Analysis Tools3 Replies

In this post we introduce Speescope, a useful tool to help you visualize what your program is doing and where it is spending time.

Speeding up an Image Processing Algorithm

Speeding up an Image Processing Algorithm

Posted on March 3, 2021May 8, 2022Author Ivica BogosavljevićPosted in Computational Performance, PerformanceLeave a Reply

A post explaining how a few small changes in the right places can have a drastic effects on performance of an image processing algorithm named Canny.

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  • Decreasing the Number of Memory Accesses 1/2
  • Frugal Programming: Saving Memory Subsystem Bandwidth
  • For Software Performance, the Way Data is Accessed Matters!
  • What is faster: vec.emplace_back(x) or vec[x] ?
  • When an instruction depends on the previous instruction depends on the previous instructions… : long instruction dependency chains and performance

Recent Posts

  • Decreasing the Number of Memory Accesses 1/2
  • Frugal Programming: Saving Memory Subsystem Bandwidth
  • For Software Performance, the Way Data is Accessed Matters!
  • What is faster: vec.emplace_back(x) or vec[x] ?
  • When an instruction depends on the previous instruction depends on the previous instructions… : long instruction dependency chains and performance

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  • Ivica Bogosavljević on Make your programs run faster by better using the data cache
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