[HN Gopher] The Biggest Identity Sandpiles and How to Compute Them
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The Biggest Identity Sandpiles and How to Compute Them
Author : eavan0
Score : 17 points
Date : 2026-03-08 19:27 UTC (4 days ago)
(HTM) web link (eavan.blog)
(TXT) w3m dump (eavan.blog)
| eavan0 wrote:
| When I wrote Beautiful Abelian Sandpiles
| (https://eavan.blog/posts/beautiful-sandpiles.html) I wanted to
| show off some nice images of large identity sandpiles. But the
| simple algorithm I used was horrendously slow. Showing a sandpile
| identity that was larger than 100 by 100 took multiple seconds!
| That's not good enough! I became obsessed with trying to find a
| faster way, all in an effort to compute bigger and bigger
| sandpile identities, bigger than anything anyone had seen before.
| In the end, I did exactly that.
| eavan0 wrote:
| The precursor to this blog entry, was discussed here:
| https://news.ycombinator.com/item?id=46210044 Shamefully, I
| somehow missed out on the discussion and can longer reply.
|
| LegionMammal978 wanted to see a proper description of the
| identity calculation methods. You can consider this sequel to
| the initial blog post as an answer.
| pavel_lishin wrote:
| A few of your links point to the previous Abelian sandpile blog
| post, but use the `.md` extension instead of `.html`.
| eavan0 wrote:
| Good catch, I've just fixed it now. Thanks
| 542458 wrote:
| I'm getting a PR_CONNECT_RESET_ERROR for this site - anybody else
| or is that just me?
| eavan0 wrote:
| Let me take a quick look. There is definitely other 2XX
| traffic, but I'll double check I haven't messed up any configs
| on the cdn.
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(page generated 2026-03-12 23:01 UTC)