
## One-liner

I started reading some interesting papers and thinking through a few ideas.

Time feels too precious, so I did not finish many papers this week.

I started thinking about what time really is.

I always feel there is not enough time, but what am I actually spending it on?

That is a question worth thinking about and discussing.

## What I did

- **Work**
  - [ ] <What did I move forward? (project/collaboration/delivery)>
  - [ ] <What problem did I solve? (context/action/result)>
  - [ ] <One blocker/risk and my plan>

- **Tech**
  - [ ] <What did I learn? (concept/tool/source/paper)>
    - [x] I started thinking through the best incident handoff/triage systems and methodologies in the industry: [YouTube talk](https://www.youtube.com/watch?v=Jdbvo5NSZ9U).
  - [ ] <What did I build/fix? (PR/refactor/debug/perf/automation)>
  - [ ] <One reusable takeaway in a single sentence>

- **Life**
  - [x] <Health: training/diet/sleep — what mattered most?>
    1. A quick review of my sleep this week: on Wednesday morning I had the best sleep score I've ever recorded, 97. But my weekly average is still below the 8h Garmin recommends.
       Thinking back to that night: I played Honor of Kings for a long time before bed and got pretty mad, so my mood wasn't great. That makes the score feel a bit confusing. Anyway, I should try to sleep better going forward. I keep feeling that when I sleep very deep it's because I *need* deep sleep — like my body has been worn down to a point where it basically says, "sleep better, now."
    2. Exercise was a bit light. I only started a 1km run on Wednesday night. It's cold today, but it should still be suitable for running. The best time to start is now.
    3. Did one hour of cardio on Friday night.
  - [x] <Social/family: one high-quality interaction>
    1. Played Switch with my partner — we finally made it happen. We played *Kingdom Two Crowns* together.

       ![image-20251229143457573](week_52_of_2025_zh.assets/image-20251229143457573.png)
  - [x] <Fun: one moment that recharged me>
    1. Attached.

- **Thinking**
  - [ ] <One recurring question>
  - [ ] <One belief I strengthened (and why)>
  - [ ] <One decision: what I will change next week>

## Output

- **Writing / Notes**
  - [ ] <Title + link>

- **Code / Projects**
  - [ ] <Repo / PR / Issue>

- **Reading / Videos**
  - [ ] <Book/article/video + one takeaway>

## Review

- **Keep doing**
  - I started playing Switch this week. I think it was one of the right things I did, because it means my creativity is starting to open up. While gaming, some creativity naturally got unlocked, and it also became a way to examine my inner state—though we ended up playing for quite a long time.

- **Stop doing**
  - I probably played games for too long.

- **One lesson**
  - <Root cause / trigger / prevention>

- **One small thing**
  - <A moment of joy or gratitude>

## Next week plan (Week 1 of 2026)

- [ ] <The single most important deliverable (verifiable)>
- [ ] <Work>
  - [ ] Solve a MongoDB high-CPU issue. I tried introducing an index (a filtered/partial index), but CPU kept spinning and utilization reached 98%.
- [ ] <Tech: a concrete learning/output goal>
  - [ ] Paper: [The Llama 3 Herd of Models](https://ai.meta.com/research/publications/the-llama-3-herd-of-models/)
  - [ ] Paper: [Revisiting Reliability in Large-Scale Machine Learning Research Clusters](https://arxiv.org/pdf/2410.21680)
  - [ ] Paper: [From bare metal to a 70B model: infrastructure set-up and scripts](https://imbue.com/research/70b-infrastructure)
  - [ ] Paper: [SuperBench: Improving Cloud AI Infrastructure Reliability with Proactive Validation](https://arxiv.org/pdf/2402.06194)
  - [ ] Paper: [xpu_timer profiling tool](https://arxiv.org/pdf/2502.05413v1)
- [ ] <Life: a habit/health goal>

## Links

- <Link 1>
- <Link 2>




What is time? Why does it always feel insufficient and wasted?

Week 52 of 2025: A few interesting papers this week

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