frogblast (u/frogblast)

frogblast commented on Fp8 runs ~100 tflops faster when the kernel name has "cutlass" in it github.com/triton-lang/tr... · Posted by u/mmastrac

nulld3v · 3 months ago

https://github.com/triton-lang/triton/pull/7298#discussion_r...

> By disassembly of ptxas, it is indeed hard-coded that they have logic like: strstr(kernel_name, "cutlass").

> it is likely that, this is an unstable, experimental, aggressive optimization by NVIDIA, and blindly always enabling it may produce some elusive bugs.

frogblast · 3 months ago

Often not elusive bugs, but elusive performance. GPU compilers are hard: Once you've done the basics, trying to do further transforms in a mature compiler will almost always produced mixed results. Some kernels will go faster, some will go slower, and you're hoping to move the balance and not hit any critical kernel too hard in your efforts to make another go faster.

An optimization with a universal >=0 speedup across your entire suite of tests is a really hard thing to come by. Something is always going to have a negative speedup.

My experience is with non-Nvidia GPU systems, but this feels like a familiar situation. They probably found something that has great outcomes for one set of kernels, terrible outcomes for another, and no known reliable heuristic or modeling they could use to automatically choose.

frogblast commented on Trump to impose $100k fee for H-1B worker visas, White House says reuters.com/business/medi... · Posted by u/mriguy

jpadkins · 3 months ago

hard disagree on the 'search for qualified citizen' or something to replace it. American policy needs to put Americans first.

Your other points are a good start. The main thing I would add is a floor on salary. H1B for a >$200k job makes some sense, it shows it's essential, the employer really wants to fill it and is having a hard time finding a US citizen. H1B for average or below average salaries is where the real abuse is. It's basically a form of indentured servitude.

frogblast · 3 months ago

I agree with the protectionism aspect, to a degree. I also believe the current system does not achieve that in any way.

frogblast commented on Trump to impose $100k fee for H-1B worker visas, White House says reuters.com/business/medi... · Posted by u/mriguy

frogblast · 3 months ago

IMO the problem is that H1B employees are stuck at the employer for the duration of their green card process, and so end up both paid lower and unable to escape abuse.

I think a very high application fee is actually part of a good solution, but is useless by itself.

A flawed proposal:

* Dispense with the 'need to search for a qualified American' which just complicates the process without achieving the stated goal, and includes a ton of legal and bureaucratic expense and time.

* A large application fee paid from the company to the federal government.

* The worker's relocation expenses must also be covered by the company.

* The worker gets a 10 year work authorization on the day of their arrival.

* The worker gets to leave their sponsoring employer on the day of their arrival, if they choose to. The employment contract may not include any clawbacks of anything.

The latter bullet is the key one. That's the one that uses market forces to truly enforces this person is being paid above market wages, and is being treated well, at their sponsoring employer. (which in turn means they don't undercut existing labor in the market).

It also means that employers don't really look abroad unless there really is a shortage of existing labor. But when there is a true shortage and you're willing to spend, the door is open to act quickly.

The obvious defect is that it creates an incentive for the employee to pay the federal fee themselves (hidden) plus more for the privilege of getting sponsored, and the company basically being a front for this process. Effectively buying a work authorization for themselves. I'm not sure how to overcome that. Then again, the current system could also suffer that defect (I don't know how common it is).

frogblast commented on How much do electric car batteries degrade? sustainabilitybynumbers.c... · Posted by u/xnx

01HNNWZ0MV43FF · 4 months ago

NiMH https://en.wikipedia.org/wiki/Toyota_Prius_(XW30)

NiCads suck, you find NiCads in like old AA rechargeables and cheap toothbrushes.

I don't know for sure if NiMH last longer than Li-Ion but I've had much the same experience with my Prius - Old as hell and everything but the battery failing

frogblast · 4 months ago

My prius (2006 model) finally had the traction battery (NiMh) start to loose modules at about 250K miles. It was clearly getting weaker, but drivable at that time. Then Covid hit, and it sat for 2 months without being driven / charge cycled. That pushed it over the edge.

That isn't predictive at all of NMC or LFP chemistries though (and I'm not going through multiple charge cycles per drive), but a fun anecdote. It was an entertaining project opening up the battery pack and identifying/replacing the bad modules.

In the end, other parts of the car were dying too, and the final straw was California's refusal to allow aftermarket catalytic converter replacements, and the Toyota's price (with no competition) was more than the vehicle was worth.

So far my two EVs, both NMC chemistry (Kia and Rivian) are at 80,000 and 30,000 miles respectively, with no noticeable degradation.

frogblast commented on Modern Polars – A side-by-side comparison of the Polars and Pandas libraries kevinheavey.github.io/mod... · Posted by u/sebg

frogblast · a year ago

What plotting libraries work well with Polars?

frogblast commented on The global surveillance free-for-all in mobile ad data krebsonsecurity.com/2024/... · Posted by u/todsacerdoti

mdaniel · a year ago

> such as AccuWeather, GasBuddy, Grindr, and MyFitnessPal that collect your MAID and location and sell that to brokers.

Welp, that's the final straw I needed to nuke that fucking GasBuddy app from my phone. Goddamn I hate them so much

frogblast · a year ago

You can still use the app. You get asked both to have the app get access to the MAID, and get access to location. If this is a problem, it is a problem because you said Yes to both. You could have said No. You can change that choice now.

If you go to Settings -> Privacy, the top two options in iOS 18 are:

* Auto-deny Advertising ID access

* Which apps have location access ("X always, Y while using the app" is summarized right at the top)

frogblast commented on Bankrupt Fisker says it can't migrate its EVs to a new owner's server arstechnica.com/cars/2024... · Posted by u/asteroidburger

h0l0cube · a year ago

Are there yet any EVs out there where you actually have control over the software? Or are there any where you could conceivably root the firmware and use open source updates and 3rd party services when the support timeline ends or the manufacturer folds?

frogblast · a year ago

My 2019 Kia Niro has some not-worthwhile connected service you can simply say No to. It is then a fully offline car. Assigning ownership involves handing someone the key fob.

frogblast commented on What to do about America's killer cars economist.com/leaders/202... · Posted by u/hheikinh

frogblast · a year ago

Given the conclusions in these articles, I'd expect insurance prices for larger vehicles to be substantially higher, because the underwriters have a large incentive to get this right.

My own policy has two drivers with a long flawless history, and several vehicles, including a heavy duty pickup truck and a compact crossover.

The truck policy prices for bodily injury is 8% higher than the crossover, while property damage coverage costs 20% less for the truck.

There appears to be a material difference in conclusion between my insurance underwriters and the producers of these studies on the danger of these vehicles.

frogblast commented on Did your car witness a crime? Bay Area police may be coming for your Tesla sfchronicle.com/crime/art... · Posted by u/danso

JohnFen · a year ago

I don't see how preserving evidence enters into the decision to seize the entire car rather than the drive.

frogblast · a year ago

The drive is inside the car. How do they get at it, and guarantee it isn't tampered with in the meantime?