Valentin Ignatev

programmer, speedrunner, father, immigrant
alt: @valigo_ru
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[Valentin Ignatev @valigo]

There are many ways to kill performance in a multithreaded program. My favorite one is false sharing, because you can get 10x performance just by moving some bytes around. So let's look into it.

00:00 - When multiple threads is not even faster
04:23 - CPU L1 cache primer
09:40 - Getting ALL the performance
15:35 - Looking at disassembler
20:29 - How to find cache line address
22:38 - false sharing in disassembly
25:00 - closing words

[Valentin Ignatev @valigo]

@uwukko Congrats!

[Valentin Ignatev @valigo]

@notch Yeah maybe. Nvidia also did it with their fpu units

[Valentin Ignatev @valigo]

So, I'm very new to this, so please tell me - do they actually nerf current models right before releasing new one to fake benchmarks, or it's some conspiracy psyop?

I personally haven't notice any difference in the past couple weeks.

[Valentin Ignatev @valigo]

@bkaradzic Well, every time someone complains about UE being stuttery mess they get hit with tons of skill issues. Now this will have an actual metrics haha

[Valentin Ignatev @valigo]

If we really want true technical craft to return to gamedev industry, competitions like IGF, TGA and others must have a technical excellence category, where a technically impressive game that has the least amount of bugs and hits buttery smooth performance gets game of the year.

[Valentin Ignatev @valigo]

@RoseSilicon They do, but we're not talking about the quality here :)

[Valentin Ignatev @valigo]

If you really think about it, indie game devs not paying artists and using AI to generate assets is not *that* far off from them not paying programmers and using Unity/Unreal instead. You can make a game in these engines without writing a single line of code.

[Valentin Ignatev @valigo]

@nullakan There is a very good chance that not all code in these engines is squeaky clean, but suing anybody for stealing code is nearly impossible, as well as proving that the code didn't have proper license if it was copypasted from somewhere.

[Valentin Ignatev @valigo]

@diroffus ахах твиторский алгоритм топ. Я начал задавать сложные вопросы, и теперь половина моей ленты в таких моральных дилеммах: https://t.co/6jxvbzQwR0

[Valentin Ignatev @valigo]

If you really think about it, indie game devs not paying artists and using AI to generate assets is not *that* far off from them not paying programmers and using Unity/Unreal instead. You can make a game in these engines without writing a single line of code.

[Valentin Ignatev @valigo]

Just like someone got paid to make those models. Probably not artists though. Yeah, there is a question about how ethical training data collection was, but you can also always ask how much code of those engines wasn't ethically sourced. It's just stealing the code from other sources is much more normalized than stealing art, and actually suing someone for stealing code is nearly impossible.

But you said it yourself, this also depends on how much you consider code art :)

[Valentin Ignatev @valigo]

@ThePrimeagen ahahah I caught the tail end of ninja/rockstar dev requirements era when I started :D

[Valentin Ignatev @valigo]

@eaxmmt This is true, and I think there will be ton of AI-generated asset flips, maybe even more than games with straight up generated assets.

[Valentin Ignatev @valigo]

@Ernesto50120430 I really don't think so

[Valentin Ignatev @valigo]

@romlib_

[Valentin Ignatev @valigo]

@kenwheeler when these clankas get a proper nasal resonator you can make some banger power metal with them

[Valentin Ignatev @valigo]

There is a line after which abstraction becomes obstruction. Don't cross it.

[Valentin Ignatev @valigo]

@AccelRiderX They literally were though?

[Valentin Ignatev @valigo]

This is Big Walk review graph right now on Steam, all because they admitted to use AI to fix some bugs or something.

On one hand, customers have rights to express their thoughts and vote with their wallets about anything related to the game. On the other hand, projecting this onto myself - being on a receiving end of this would suck so much...

[Valentin Ignatev @valigo]

@waitacdahogt This gets dangerously close to "who can vote" argument :P

[Valentin Ignatev @valigo]

@OlexGameDev I mean it's still mental health blow that you would want to avoid if possible

[Valentin Ignatev @valigo]

@MissSelfDstrct Big W, congrats!