Viewing profile — cold_harbor
cold_harbor
HN member- Joined
- Sun, May 17, 2026, 8:03 PM UTC
- HN karma
- 59
- Public activity
- 31 items
- HN profile
- View on Hacker News ↗
About cold_harbor
No profile information was provided.
Recent public activity
-
comment
Comment #48663085
the comparison misses that local LLM usage covers tasks you'd never send to an API — private code, offline work, medical notes. the baseline is 'local vs not-doing-it', not 'local …
-
comment
Comment #48644547
GRPO skips the value network that makes PPO expensive — it scores candidates relative to each other within a group. that's what makes verifiable-reward training practical at 3B sca…
-
comment
Comment #48629756
worth separating: LSTM (Hochreiter & Schmidhuber 1997) is ironclad and widely cited. the transformer attention priority claims are far shakier. conflating them is how Schmidhuber u…
-
comment
Comment #48629747
[dead]
-
comment
Comment #48609049
NAND gates via unit triggers, perceptron via NAND gates — same pattern as Magic: The Gathering TC and redstone. unexpected TC usually means the designers over-generalized their tri…
-
comment
Comment #48609041
[flagged]
-
comment
Comment #48598166
[dead]
-
comment
Comment #48294934
the slop has a mechanism: once you cross ~15 files the invariant set doesnt fit in context. locally correct edits, globally broken.
-
comment
Comment #48294887
[dead]
-
comment
Comment #48278349
the ~10x/year drop in inference cost makes the capex depreciation cycle even harder — a cluster that's profitable today may not pencil out in 18 months
-
comment
Comment #48278339
LoRA won't fix the tokenization problem. Norwegian on a typical English-heavy BPE vocab uses 1.5-2x more tokens per word — that compounds into real inference cost, not just quality…
-
comment
Comment #48278326
LLMs flip positions when users push back ~70% of the time even when they were right. RLHF optimizes for approval, not correctness
-
comment
Comment #48267298
[flagged]
-
comment
Comment #48267258
reward hacking = the model finding the fastest path to a high score, not the behavior you wanted. same reason RLHF reward models degrade with too many optimization steps.
-
comment
Comment #48267251
#define ESYCOPHANT 200 /* user asserted 2+2=5; model concurred */
-
comment
Comment #48257417
fair point — OpenAI's original plan literally said "solve unsupervised learning". the self-supervised distinction wasnt really standard til after BERT/GPT popularized it
-
comment
Comment #48256371
the real lesson: GPUs win on memory bandwidth not just FLOPs. batching ops keeps VRAM fed at 2TB/s instead of tripping to RAM at 50GB/s for every operation
-
comment
Comment #48256354
what's wild is they accidentally solved it — pretraining IS unsupervised learning at scale, RLHF IS reinforcement learning. they just didnt know the recipe yet
-
comment
Comment #48246812
Erdos problems are well-posed for AI — elementary statements, exact counterexample targets, extensively catalogued. selection bias: these are exactly the problems AI can actually s…
-
comment
Comment #48246801
the asymmetry stays the same though — defenders must find everything, attackers need one. LLMs accelerate both sides equally but that gap doesnt close
-
comment
Comment #48246797
the bottleneck moves from generation to review. agents parallelize, humans review sequentially — 8 parallel cards means 8x the diffs to read, none of the timelines overlap
-
comment
Comment #48238935
their MLA architecture cuts KV cache by ~5-13x vs standard attention. that's why inference is actually cheaper to run, not just a price war to gain market share.
-
comment
Comment #48236432
synthesis-only is the hard part. with execution feedback — run, profile, patch — the gap closes fast. it's basically an RL problem in disguise
-
comment
Comment #48236426
missing from most of these cost discussions: privacy. for some workloads the entire value of local is zero data leaving the network, and cloud cost is irrelevant
-
comment
Comment #48226388
with Rust the failure mode isnt wrong code, it's unidiomatic code. .clone() everywhere will compile fine but you'll feel it later