Computer, Enhance!

Reading CPU Diagrams

If you've followed the Performance-Aware Programming course up to this point, you already know everything you need to know to ballpark CPU performance…

Aug 20

53

1

30:40

July 2025

Q&A #78 (2025-07-21)

Answers to questions from the last Q&A thread.

Jul 21

41

22

22:48

June 2025

Selectively Preventing Optimizations

When we want to microbenchmark code in a high-level language, we want almost all optimizations applied - except for the ones that would remove the code…

Jun 29

47

4

32:26

Q&A #77 (2025-06-19)

Answers to questions from the last Q&A thread.

Jun 20

41

30

36:48

Simplified Haversine Candidates

Even for a computation as simple as our haversine loop, removing waste yields a surprisingly large performance improvement for very little effort.

Jun 15

63

3

34:11

May 2025

Q&A #76 (2025-05-23)

Answers to questions from the last Q&A thread.

May 23

39

24

40:48

Removing Waste

As we saw in the very beginning of the Performance Aware Programming series, a CPU can be brought to a crawl by drowning it in unnecessary work. How…

May 15

63

3

27:51

Our Very Own Haversine

We've built all the pieces - now it's time to assemble them into a haversine distance function that uses only math we've hand-coded ourselves so we can…

May 5

37

1

9:02

Q&A #75 (2025-05-02)

Answers to questions from the last Q&A thread.

May 2

38

29

1:00:05

April 2025

Extending Arcsine to the Full Input Range

Using a trigonometric identity, we can extend our arcsine approximation to cover the full range of inputs we expect.

Apr 24

36

1

12:10

Approximating Arcsine

Everything we learned when approximating Sine translates directly to approximating Arcsine.

Apr 16

38

20

24:35

Q&A #74 (2025-04-01)

Answers to questions from the last Q&A thread.

Apr 2

57

40

1:03:59