Archive - CPU fun

Fun with Serial and Parallel Sum Reductions

What is the "right" answer?

Feb 22 •

October 2023

Is Mixing OpenMP® Runtimes Safe?

Note that Betteridge's law applies!

Oct 31, 2023 •

March 2023

Enemies and Opponents

A completely non-technical article about organisational psychology based on a joke.

Mar 7, 2023 •

December 2022

Presenting Parallel Performance (2)

When presenting scaling, what should be on the X-axis?

Dec 15, 2022 •

Presenting Parallel Performance (1)

Part 1: Do you really want "speedup"?

Dec 15, 2022 •

September 2022

Is Fortran "a dead language"?

Some C++ folk seem to think so, but they're wrong!

Sep 22, 2022 •

July 2022

Elemental Encodings

An off-topic result of covid induced feverish thinking!

Jul 29, 2022 •

May 2022

Where's the Race Condition?

But the code works on AArch64, how can it fail on X86_64?!

May 27, 2022 •

March 2022

To sched_yield() Or Not To sched_yield()?

Is Linux' sched_yield() useful while polling, or merely "sound and fury signifying nothing"?

Mar 31, 2022 •

February 2022

Using a FOREACH macro and a few other amusements

Feb 11, 2022 •

November 2021

AMD® EPYC 7742 64-Core Processor Cache Micro-Benchmarks

The gory details for one machine

Nov 12, 2021 •

Portable Support for 128b Floats in C/C++

Surely this is standard already?

Nov 4, 2021 •

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