Computer, Enhance!

Q&A #86 (2026-06-10)

Answers to questions from the last Q&A thread.

Jun 10

34

14

1

51:12

May 2026

How to Use uops.info

Now that we've done our own microarchitecture investigations, it's time to get familiar with one of the best x64 microarchitecture data sites.

May 30

31

40:42

Q&A #85 (2026-05-26)

Answers to questions from the last Q&A thread.

May 27

44

10

1:22:46

April 2026

Block Interleaving

Breaking up dependency chains to better suit the processor's out-of-order scheduling gets most of the benefit of in-order interleaving without requiring…

Apr 28

45

1

35:48

Q&A #84 (2026-04-20)

Answers to questions from the last Q&A thread.

Apr 21

44

17

30:32

In-order Interleaving

By handing the CPU an instruction stream it can execute in order, we can exceed the limits we hit when we rely on its out-of-order execution…

Apr 16

53

38:11

March 2026

Q&A #83 (2026-03-11)

Answers to questions from the last Q&A thread.

Mar 12

54

19

1:16:33

Dependency Chain Stalls

The CPU's ability to extract parallelism has its limits.

Mar 4

69

5

1

29:55

January 2026

Q&A #82 (2026-01-27)

Answers to questions from the last Q&A thread.

Jan 27

65

25

4

48:27

December 2025

Dead Code Elimination Prevention Macros

Watch now (26 mins) | This is the eighth video in Part 5 of the Performance-Aware Programming series.

Dec 29, 2025

52

10

25:56

Q&A #81 (2025-12-22)

Answers to questions from the last Q&A thread.

Dec 23, 2025

82

31

52:31

November 2025

Our Nemesis Returns

To avoid spoiling the surprise for people who have not yet done the homework, I cannot be any more specific in the title.

Nov 3, 2025

55

16

12:43