Trendoday

Speeding up GPU copies by permuting iteration spaces, or, optimising the identity function

1 comments · compilers

  • Comments2
–Rank now
#15Peak rank
3Days on list
31Score · 7d
Oct 31, 2026First seen
Rank · 7 days

On Lobsters

compilers
Score
6
Comments
2
Submitted by
fanf
Tags
compilers
Site
futhark-lang.org

Story details from Lobsters ↗ · linked article on futhark-lang.org.

Trending history

Speeding up GPU copies by permuting iteration spaces, or, optimising the identity function was first seen on Lobsters · Hottest on Oct 31, 2026. Since then it has appeared in 42 checks on 3 different days. Its best position was #15 of 25, reached on Nov 2, 03:51 UTC. It dropped off the list after Nov 2, 12:51 UTC.

Rank history

Position on Lobsters · Hottest at every check (lower is better).

#1#9#17#25 17:2104:1315:0601:5812:51 Oct 31, 17:21 UTC · #21Oct 31, 17:51 UTC · #24Oct 31, 18:21 UTC · #20Oct 31, 18:51 UTC · #20Oct 31, 19:51 UTC · #22Oct 31, 20:21 UTC · #22Oct 31, 20:51 UTC · #18Oct 31, 21:21 UTC · #18Oct 31, 21:51 UTC · #19Oct 31, 22:21 UTC · #19Oct 31, 22:51 UTC · #19Oct 31, 23:21 UTC · #19Oct 31, 23:51 UTC · #19Nov 1, 00:21 UTC · #20Nov 1, 00:51 UTC · #20Nov 1, 01:21 UTC · #19Nov 1, 01:51 UTC · #20Nov 1, 02:21 UTC · #18Nov 1, 02:51 UTC · #17Nov 1, 03:51 UTC · #18Nov 1, 04:51 UTC · #17Nov 1, 05:21 UTC · #17Nov 1, 05:51 UTC · #17Nov 1, 06:21 UTC · #18Nov 1, 06:51 UTC · #18Nov 1, 07:21 UTC · #18Nov 1, 07:51 UTC · #18Nov 1, 08:51 UTC · #19Nov 1, 09:21 UTC · #19Nov 1, 09:51 UTC · #19Nov 1, 10:21 UTC · #19Nov 1, 10:51 UTC · #19Nov 1, 11:21 UTC · #21Nov 1, 11:51 UTC · #22Nov 1, 12:21 UTC · #24Nov 1, 12:51 UTC · #25Nov 1, 13:51 UTC · #24Nov 1, 14:51 UTC · #25Nov 1, 15:21 UTC · #25Nov 2, 03:51 UTC · #15Nov 2, 09:51 UTC · #17Nov 2, 12:51 UTC · #21

Last 14 days

Best rank per day (UTC).

Oct 26today

Metric history

Platform metric as reported by Lobsters.

0246 17:2104:1315:0601:5812:51 Oct 31, 17:21 UTC · 1Oct 31, 17:51 UTC · 1Oct 31, 18:21 UTC · 2Oct 31, 18:51 UTC · 2Oct 31, 19:51 UTC · 2Oct 31, 20:21 UTC · 2Oct 31, 20:51 UTC · 4Oct 31, 21:21 UTC · 4Oct 31, 21:51 UTC · 4Oct 31, 22:21 UTC · 4Oct 31, 22:51 UTC · 4Oct 31, 23:21 UTC · 4Oct 31, 23:51 UTC · 4Nov 1, 00:21 UTC · 4Nov 1, 00:51 UTC · 4Nov 1, 01:21 UTC · 5Nov 1, 01:51 UTC · 5Nov 1, 02:21 UTC · 5Nov 1, 02:51 UTC · 6Nov 1, 03:51 UTC · 6Nov 1, 04:51 UTC · 6Nov 1, 05:21 UTC · 6Nov 1, 05:51 UTC · 6Nov 1, 06:21 UTC · 6Nov 1, 06:51 UTC · 6Nov 1, 07:21 UTC · 6Nov 1, 07:51 UTC · 6Nov 1, 08:51 UTC · 6Nov 1, 09:21 UTC · 6Nov 1, 09:51 UTC · 6Nov 1, 10:21 UTC · 6Nov 1, 10:51 UTC · 6Nov 1, 11:21 UTC · 6Nov 1, 11:51 UTC · 6Nov 1, 12:21 UTC · 6Nov 1, 12:51 UTC · 6Nov 1, 13:51 UTC · 6Nov 1, 14:51 UTC · 6Nov 1, 15:21 UTC · 6Nov 2, 03:51 UTC · 6Nov 2, 09:51 UTC · 6Nov 2, 12:51 UTC · 6

From the discussion

A few top-level comments from Lobsters, shortened. Read the full thread on Lobsters.

The traditional term for what this article calls an “LMAD” is a “[dope vector](https://dl.acm.org/action/showFmPdf?doi=10.5555%2F1064057)”. When I was looking at the CACM version of that article I found [its neighbour on the previous page](https://dl.acm.org/doi/pdf/10.1145/366062.366087) also uses the term “dope…

This reminds me that I wrote an old article, [Multi-dimensional array views for systems programmers](https://gist.github.com/pervognsen/0e1be3b683d62b16fd81381c909bf67e), which some people found helpful at the time, e.g. [Multi-dimensional strided array views in…

Questions

Is Speeding up GPU copies by permuting iteration spaces, or, optimising the identity function trending on Lobsters right now?

Not at the moment. It was last on the list on Nov 2, 12:51 UTC, after 3 days of trending.

What is the highest rank Speeding up GPU copies by permuting iteration spaces, or, optimising the identity function reached?

#15 on Lobsters · Hottest, on Nov 2, 03:51 UTC. Trendoday checks this list every 30 minutes.

How long has Speeding up GPU copies by permuting iteration spaces, or, optimising the identity function been trending?

It was first seen on Oct 31, 2026 and has been on the list on 3 days (42 checks) since.