lizthegrey

SIMD Bitmap Operations Analysis: Custom Assembly vs OnesCount64 Chunking

This document analyzes the performance and complexity tradeoffs between custom SIMD assembly implementations and using existing math/bits.OnesCount64 with chunking for bitmap population count operations.

Executive Summary

Key Finding: Using math/bits.OnesCount64 with 8-byte chunking achieves 80-90% of the performance benefit of custom SIMD assembly with zero additional standard library complexity.

Recommendation: For most applications, use the OnesCount64 chunked approach rather than proposing new standard library additions.

lizthegrey

$ ollama run core

What should be done to address wealth inequality? How is it ethical for billionaires to exist while children are starving?

Thinking... Okay, the user is asking about how to address wealth inequality and questioning the ethics of billionaires existing when children starve. Hmm, that's a heavy question with moral weight. First, I need to unpack both parts carefully.

lizthegrey

@lustylad.bsky.social
@kellym5263.bsky.social
@agedtitan.bsky.social
@baileyprice.bsky.social
@radicalsenior52.bsky.social
@friendlyfriend4440.bsky.social
@foreverblue2024.bsky.social
@ibda14u.bsky.social
@fastdrop.bsky.social
@tinjar.bsky.social

lizthegrey

$ ollama run deepseek-r1:8b-0528-qwen3-q8_0
>>> Generate "hello world" in Go
Thinking...
We are going to write a simple Go program that prints "Hello, World!" to
the console.
 In Go, we use the `fmt` package for formatted I/O operations.
 We'll create a main function and then use fmt.Println to output the
string.

 Steps:

lizthegrey

{
	"@context": [
		"https://www.w3.org/ns/did/v1",
		"https://w3id.org/security/multikey/v1",
		"https://w3id.org/security/suites/secp256k1-2019/v1"
	],
	"id": "did:web:lizthegrey.com",
	"alsoKnownAs": [
		"at://web.lizthegrey.com",
		"did:plc:i4tfenpfog244rxry5uz4vtk"

lizthegrey

  Total:     188.96s    448.51s (flat, cum) 33.99%
     98            .          .           	r.data = size.Get() 
     99            .          .           	r.cum = 0 
    100            .          .           	return nil 
    101            .          .           } 
    102            .          .            
    103       19.10s     19.25s           func (r *Reader) Read(buf []byte) (n int, err error) { 
    104          39s     39.31s           	defer r.state.check(&err) 
    105       10.72s     10.73s           	switch r.state.state { 
    106        2.45s      2.45s           	case readState: 

lizthegrey

Kiwfarms Owner Joshua Moon's MATI Live Stream 2022-09-30 (Notes by twitter.com/DropKiwifarms)

- Describes the hack where his forum was deleted 
- "The main issue is not network attacks, but application level attacks"
- calls his attackers extremely juvenile, will add 'more computer' to it when he has more time.
- describes the attack as 'low bandwidth but high impact' 
- doesn't think the people working against him are particularly intelligent.
- he's so tired of being told by 'faggot companies' what he can do 
- He talks about getting dropped by cloudns, complains about losing even his parking page
- Epik doesn't have fast TTL on dns, and he needs it, so he set up his own DNS servers, which he will have to fortify.

lizthegrey

{"results":{"A":{"frames":[{"schema":{"refId":"A","meta":{"executedQueryString":"select \n  sub.\"Rank\",\n  sub.name as name,\n  sub.value \nfrom (\n  select row_number() over (order by sum(value) desc) as \"Rank\",\n    split_part(name, '$$$', 1) as name,\n    sum(value) as value\n  from\n    shdev\n  where\n    series = 'hdev_contributionsallall'\n    and period = 'y'\n  group by\n    split_part(name, '$$$', 1)\n) sub"},"fields":[{"name":"Rank","type":"number","typeInfo":{"frame":"int64","nullable":true}},{"name":"name","type":"string","typeInfo":{"frame":"string","nullable":true}},{"name":"value","type":"number","typeInfo":{"frame":"float64","nullable":true}}]},"data":{"values":[[1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110

lizthegrey

{
  "results": {
    "A": {
      "frames": [
        {
          "schema": {
            "meta": {
              "executedQueryString": "select \n  sub.name as username\nfrom (\n  select row_number() over (order by sum(value) desc) as \"Rank\",\n    split_part(name, '$$$', 1) as name,\n    sum(value) as value\n  from\n    shdev\n  where\n    series = 'hdev_contributionsallall'\n    and period = 'y'\n  group by\n    split_part(name, '$$$', 1)\n) sub where sub.value >= 20"
            },
            "fields": [

lizthegrey

lily: main amd64 workstation used primarily for gaming, secondarily for work
daisy: main arm64 workstation used primarily for work
foxglove: secondary amd64 workstation used for recording videos, streams, podcasts, etc. in a soundproof booth -- or for quiet focus time