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Packing Bools, Performance tests

By bfilipek | May 12, 2017 11:42 AM | Tags: performance

Can you pack 8 bools into one BYTE efficiently?

Packing Bools, Performance tests

by Bartlomiej Filipek

From the article:

The simple problem of packing seems to show a lot of performance issues. If the packing is really needed? Can we make the code parallel? What are the branching effects here?

HPX version 1.0 released -- STE||AR Group

By Hartmut Kaiser | Apr 24, 2017 06:01 AM | Tags: performance parallelism heterogeneous computing distributed computing c++17 c++14 c++11

The STE||AR Group has released V1.0 of HPX -- A C++ Standard library for parallelism and concurrency.

HPX V1.0 Released

The newest version of HPX (V1.0) is now available for download! Please see here for the release notes.

HPX exposes an API fully conforming to the concurrency related parts of the C++11/C++14/C++17 standards, extended and applied to distributed and heterogeneous computing, and aligned with the ongoing standardization discussions.

From the announcement:

  • HPX is a general purpose parallel C++ runtime system for applications of any scale. It implements all of the related facilities as defined by the C++ Standard. As of this writing, HPX provides the only widely available open-source implementation of the new C++17 parallel algorithms. Additionally, HPX implements functionalities proposed as part of the ongoing C++ standardization process, such as large parts of the C++ Concurrency TS, task blocks, data-parallel algorithms, executors, index-based parallel for loops, and many more. It also extends the existing C++ Standard APIs to the distributed case (e.g. compute clusters) and for heterogeneous systems (e.g. GPUs).
  • HPX seamlessly enables a new asynchronous C++ Standard Programming Model which tends to improve the parallel efficiency of our applications and helps reduce complexities usually associated with concurrency

 

Zapcc 1.0 - A Much Faster C++ Compiler

By herbsto | Mar 8, 2017 06:00 AM | Tags: performance

We are happy to announce Zapcc, a Clang/LLVM based C++ compiler, with much faster compilations.

Zapcc

by the Zapcc team

About the compiler:

Typically, Zapcc accelerate full C++ builds by x2-x5, and incremental builds by x10 and more.

Zapcc is available for evaluation on the companies website.

Feel free to try it out!

Const, Move and RVO--Bartlomiej Filipek

By Adrien Hamelin | Jan 23, 2017 02:21 PM | Tags: performance intermediate

const does not prevent (N)RVO, youhou.

Const, Move and RVO

by Bartlomiej Filipek

From the article:

C++ is a surprising language. Sometimes simple things are not that simple in practice. Last time I argued that in function bodies const should be used most of the time. But two cases were missed: when moving and when returning a value.

Does const influence move and RVO?

Order Your Members

By Jonas Devlieghere | Jan 11, 2017 04:17 AM | Tags: performance intermediate

How ordering members can impact performance.

Order Your Members

by Jonas Devlieghere

From the article:

The article highlights the impact that different choices regarding the ordering of members in a struct can have on the performance of your code. A lot can be achieved by taking into account some general guidelines.