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buildbot

6,474 karma · joined January 30, 2016

Senior Deep Learning Engineer @ Nvidia

https://scholar.google.com/citations?user=BrwGRLwAAAAJ&hl=en

https://www.maxg.io

https://blog.maxg.io

All posts are my own personal opinion

[ my public key: https://keybase.io/mtg; my proof: https://keybase.io/mtg/sigs/4PwbkRLWa26ARSIXs2TCRAFZaUTDQ2lsT8JGzJD72QM ]

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buildbot··on The $14 Burrito: Why San Francisco Inflation Feels Higher Than 2.5%
Mmm 14$ sounds nice! In Seattle a burrito is hard to find for under 17$ IMO. For example, a local and delicious place in a nearby liquor store has 18$ burritos: https://eltacolocoballard.com/seattle-ballard-el-taco-loco-f...

Or a longtime establishment of the area offers 15$ ones - https://www.gorditosmexicanfood.com/menu#menu=burritos Granted these are massive compared to basically anywhere else.

buildbot··on The $14 Burrito: Why San Francisco Inflation Feels Higher Than 2.5%
I love Seattle and it’s food but yeah it’s really expensive by default - I haven’t spent enough time in the Bay recently to compare but it feels equally pricy.

There are still reasonable & very good places though you just have to know.

buildbot··on I wanted a camera that doesn't exist, so I built it
Most of the modern ones do - anything from the IQ1-IQ4 has a good preview screen, for live view specifically you need a CMOS sensor based one like the IQ3 100 or the IQ4 150. The CCD ones technically do live view but it's really not good. So this only works for backs that are fairly expensive still...

Close to West Seattle! I'm in the North Seattle area and walk around near the water there a lot.

buildbot··on I wanted a camera that doesn't exist, so I built it
Thanks! It was surprisingly challenging to get right, in fact that body is slightly misaligned somewhere (possibly the lens…).
buildbot··on I wanted a camera that doesn't exist, so I built it
Thank you, I appreciate that!
buildbot··on Creating a bespoke data diode for air‑gapped networks
This is a real vector - I had this happen in undergrad EE where my serial line to my microcontroller had a bunch of legible garbage on it. Turns out my MacBook charger was also using serial to talk to the laptop, with enough power to radiate to the otherwise isolated microcontroller serial line.
buildbot··on I wanted a camera that doesn't exist, so I built it
Yes it does - I have one - it’s simply a button basically. Not the same feel as something like a Leica
buildbot··on I wanted a camera that doesn't exist, so I built it
This is an amazing project and level of effort, and I empathize deeply with this photographers desire for a clean, simple, beautiful camera.

I so deeply want a modern EVF camera, doesn’t even have to be a rangefinder, with a mechanically wound shutter so the film advance lever has a reason to exist.

I’m aware of the Epson R1 but 6MP is too low.

buildbot··on I wanted a camera that doesn't exist, so I built it
I’m just a hobbyist 3D user but I feel like I have good experience, been using Autodesk Inventor then Fusion since early high school…

I saw the level of detail in the model and am shocked. If this is truly their first experience with CAD/CAM they are a natural.

For example - here’s my home built camera. It’s massively more simplistic: https://blog.maxg.io/phase-one-swc/

buildbot··on Dell's version of the DGX Spark fixes pain points
Indeed, same process here: https://www.dell.com/support/kbdoc/en-us/000379162/how-to-up...
buildbot··on Fast GPU Interconnect over Radio
Interestingly reading the terahertz radiation wikipedia article they mention peeling adhesive tape generates 2THz and 18THz peaks
buildbot··on Fast GPU Interconnect over Radio
It’s sorta funny to see one of the companies aiming for terahertz frequencies - long wave IR is only ~30THz.
buildbot··on Over 40% of deceased drivers in vehicle crashes test positive for THC: Study
> "The modern world is so cat centric"

If only

buildbot··on 1.5 TB of VRAM on Mac Studio – RDMA over Thunderbolt 5
This is incorrect - they can split however the driving chip supports. (Q|O)SFP(28|56|112|+) can all be split to a single differential lane. All (Q|O)SFP(28|56|112|+) does is provide basically direct, high quality links to whatever you chips SERDES interfaces can do. It doesn't even have to be ethernet/IB data - I have a SFP module that has a SATA port lol.

There's also splitting at the module level, for example I have a PCIe card that is actually a fully self hosted 6 port 100GB switch with it's own onboard Atom management processor. The card only has 2 MPO fiber connectors - but each has 12 fibers, which each can carry 25Gbps. You need a special fiber breakout cable but you can mix anywhere between 6 100GbE ports and 24 25Gbe ports.

https://www.silicom-usa.com/pr/server-adapters/switch-on-nic...

buildbot··on VPN location claims don't match real traffic exits
I assume if all the inputs are anonymous you could? Like phone/email. Never tried either haha.
buildbot··on More atmospheric rivers coming for flooded Washington and the West Coast
There’s also a fairly decent wind storm coming in tonight - 45mph gusts predicted.

It’s going to be an interesting week in the Washington PNW…

buildbot··on Photographer built a medium-format rangefinder
A full frame focal plane shutter _cannot_ work for medium format sadly. It's be definition too small. I don't think you can use them partially in front of the focal plane, but I could be wrong.

Medium format focal plane shutters do exist, copal made them for Mamiya/Phase One for their AF, AFD, DF, DF+, and XF cameras. Some of which work for medium format film.

buildbot··on Will West Coast Jazz Get Some Respect?
Does it not? It feels like it’s taken seriously nationally.

All the local high schools in the Seattle area had/have serious jazz programs that sent students to The Essentially Ellington competition/festival - the one the movie Chops is about.

Seattle probably has the most overall bands sent of any city in the country. I guess we sent 4 this year - https://www.seattletimes.com/entertainment/music/4-seattle-a...

buildbot··on VPN location claims don't match real traffic exits
Buy amazon gift card in cash, setup new account, ship scratch card to locker? (Idk if they’d let you do that).

I think you can still mail them cash?

buildbot··on 1GB Raspberry Pi 5, and memory-driven price rises
I’d be really curious to see - that would possibly sell me on one! Linux should also report edac being up in dmesg if it has ecc.
buildbot··on The architecture of “not bad”: Decoding the Chinese source code of the void
Yeah this tracks - if someone says something is “not great” it’s probably extremely bad haha. or “super cool no problems here” (there’s tear gas streaming through the windows)
buildbot··on Rivian Unveils Custom Silicon, R2 Lidar Roadmap, and Universal Hands Free
Amusingly the lenses are worse than silicon at transmitting that wavelength.

1550nm might be worse for sensors because a good portion of the light is only being dumped into the metal layers - pure silicon is mostly transparent to 1550nm. Not sure how doped silicon would work. I can tell you that 1070nm barely works on an IQ3 Achromatic back…

https://www.pmoptics.com/silicon.html

buildbot··on Helldivers 2 on-disk size 85% reduction
The level of work that goes into even “small” games is pretty incredible. When I was a grad student another student was doing their (thesis based, research focused) masters while working at EA on a streetfighter(?) game.

The game programming was actually just as research focused and involved as the actual research. They were trying to figure out how to get the lowest latency and consistency for impact sounds.

buildbot··on A supersonic engine core makes the perfect power turbine
Meanwhile in Seattle... 0.14$ per KW

https://www.seattle.gov/city-light/residential-services/bill...

(Oh wow off peak will be 0.08$?!)

buildbot··on Apple's slow AI pace becomes a strength as market grows weary of spending
I have a little rust script that uses the built in vision toolkit to do ocr of pdfs, it spins up the ANE to a full 1W compared to 0 as measured by the power profiler. So it is used!

IMO, It’s a very apple strategy, stuff just works and is slowly more accelerated/lower power.

buildbot··on Ask HN: Should "I asked $AI, and it said" replies be forbidden in HN guidelines?
Yep, it’s a 2 way learning street - you can learn new things from non native speakers, and they can learn from you as well. Any kind of auto Translation removed this. (It’s still important to have for non fluent people though!)
buildbot··on LLM from scratch, part 28 – training a base model from scratch on an RTX 3090
This happens so much! It’s actually imo much more important to be able to let the math go and compare concepts vs. the exact algorithms. It’s much more useful to have semantic intuition than concrete analysis.

Being really good at math does let you figure out if two techniques are mathematically the same but that’s fairly rare (it happens though!)

buildbot··on 1GB Raspberry Pi 5, and memory-driven price rises
Necro reply - I don't think they actually shipped it with ECC... If you lookup a Z1 mina G1a repair video: https://youtu.be/1i_PfH05ekw?si=MpQ0Uc9QVwhgsFzi&t=267 It has 8 chips, not 10. It needs 10 from true ECC.
buildbot··on Strong earthquake hits northern Japan, tsunami warning issued
Especially somewhere like Japan. A newer hotel is probably one of the safest places to be.
buildbot··on Bikeshedding, or why I want to build a laptop
I’m sure they manage to hit 120fps smoothly too just like MacOS? …
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