mufeez

having fun exploring ML

infra @linear, fmr @meta. @uwaterloo SE alum

[mufeez @moofeez]

I post-trained Qwen3-Coder to fix bugs using an actual debugger. The result:

Solve rate: 70% → 89%
Median turns to fix: 46 → 19 (-59%)

Instead of just reading code or print-debugging, it:
- reasons from execution
- inspects live variables and call stacks
- sets breakpoints, steps, and evaluates expressions

[mufeez @moofeez]

@mingjie if you're making those mistakes your keys probably aren't worth much anyway 😃

[mufeez @moofeez]

do people actually publish their env files like this...?

[mufeez @moofeez]

@irfansharifm gotta tweak the reward fn

[mufeez @moofeez]

@_rrdelaney can't wait for all of us to be touching grass and shipping on Linear mobile in 1 year

[mufeez @moofeez]

the CI/CD startup industrial complex rn

[mufeez @moofeez]

@_adichha @dwarkeshpodcast drop the name

[mufeez @moofeez]

@iAwaisRauf @ar0cket1 sometimes most of the gain in end task performance (from RL) can be achieved with just SFT

[mufeez @moofeez]

@ArielKwiat Higher number is better 🤝

[mufeez @moofeez]

@naveedg @freemanjiangg assuming this doesn't include nonfiction?

[mufeez @moofeez]

@swyxio @Smol_AI respect

[mufeez @moofeez]

@hamostaf04 @askchapter @CobiBGantz @darshan1394 bros got motion, congrats!!

[mufeez @moofeez]

@largedatabank @kannanlakshmi @CockroachDB congrats!! deserves a celebratory twitch stream :)

[mufeez @moofeez]

@DamoIAM v low TAM tweet

[mufeez @moofeez]

@RozenMD so long as the next person doesn’t need to do it themselves

thanks for sharing the post!

[mufeez @moofeez]

@lu__jasper I would expect one step per batch to be better because:
1. less off-policy (async lag already adds staleness)
2. each update averages over more samples, so the gradient is less noisy

[mufeez @moofeez]

@bilaltwovec "you'll never believe this life hack"

[mufeez @moofeez]

@harris_p10 @johnroodepic why leave out this key detail in the main tweet 😃

[mufeez @moofeez]

@thorstenball Brooklyn bridge park is nice

[mufeez @moofeez]

@FardeemM @thorstenball LOL