Is prefetch on modern cpu(2020 year) does it helps ?

flat assembler
Message board for the users of flat assembler.

Index > Main > Is prefetch on modern cpu(2020 year) does it helps ?

Author

Thread

Roman

Joined: 21 Apr 2012
Posts: 1878

Roman 28 Jan 2025, 10:24

I read asm command prefetch speedup 25% on Pentium4(2000 to 2004 years)
How about modern cpu 2020 year or 2024 year, still prefetch helps and does needed ?

28 Jan 2025, 10:24

revolution
When all else fails, read the source

Joined: 24 Aug 2004
Posts: 20517
Location: In your JS exploiting you and your system

revolution 28 Jan 2025, 12:36

Depends upon what your code does.

It will require you to analyse your data flows and see where the delays (if any) are.

Sometimes prefetching can help. Sometimes it can hurt. Sometimes it doesn't make a measurable different.

28 Jan 2025, 12:36

< Last Thread | Next Thread >

Forum Rules:

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum