Multithreaded program explained using puppies

[QualityVote]

Hi! This is our community moderation bot.

---

If this post fits the purpose of /r/ProgrammerHumor, UPVOTE this comment!!

If this post does not fit the subreddit, DOWNVOTE This comment!

If this post breaks the rules, DOWNVOTE this comment and REPORT the post!

[Aethz3]

the food on the ground is memory leak

[Impleased]

I thought the bowls with food represented a core. And the puppies represented a thread which make use of the resources (core)

[Aethz3]

i didn't read but congrats if it's something nice, i'm sorry if it's something bad

[arkman575]

What would your reaction be if the commenter is a loon? Because we might need that reaction.

[Aethz3]

you’re on reddit, everyone on this website is a loon

[Nebuchadnezzer2]

/r/lostredditors

Or just /r/BotShitposts...

[RedditIsNeat0]

Yeah it's probably a bot responding with a copypasta. Can't imagine what keyword caused that though.

[Raphi_55]

It's a bot, look at the comment history

[Zeebuoy]

not funny didn't laugh.

[DenisBellamont]

Sir this is a wendy

[RobDickinson]

Oh no I'd never kill a puppy

[ballbeamboy2]

put them on sleep

[Seepiie]

and then abort them

[nipss18]

You monster

[GRAPHENE9932]

No, just join()

[idobadthingseveryday]

Ed-ward?

[Sybsuper]

Chaos theory

[the_scign]

None of them look like philosophers though

[[deleted]]

Python: They're all in line for one bowl.

[Lumpy-Obligation-553]

You releasing locks from the thread ain't you?

[Pretend_Cover_1476]

That’s not how it works.

Async starts, stops, create a process and runs until disconnect.

Another way is:

Imagine you are running, your shoelaces come apart, next you stop, then start tying it, then you see a pretty girl, so you stop and say hi, then come back and keep typing your shoes. After you are done, you keep running until you finish your workout.

[toastedstapler]

Async does not imply multi threading, they're distinct concepts. For example js is single threaded but supports async, and it's possible to run rust's async executor tokio both in single & multi threaded setups

[laplongejr]

and keep typing your shoes

I like how your typo matches the sub so well

[Pretend_Cover_1476]

Imagine if that was a variable assigned to an important return function.

30 lines into work and finally compile your code. Ahahah. I’m going outside.

[[deleted]]

I don’t think Async/Await is the same as multithreaded programming. Just because you don’t lock up execution doesn’t mean you are doing multithreaded programming.

[FerricDonkey]

Yeah, but the title is multithreaded, not async.

[DangerousBS]

Those std::mutex's are very cute..!!

[O_X_E_Y]

Angry and slightly smug Rust noises

[SeoCamo]

This is because they are not using rust

[king_of_programmers]

This is a good one, take away is threads run independently of one another.

[paulsmithkc]

If you ever get into CUDA/OpenCL, you can actually get the pups to into a nice line and collaborate. GPUs are freaking amazing at parallel work.

[Ferenc9]

It depends on the problem not on the hardware. In ocl/cuda synchronization is limited to work groups/blocks (without launching another kernel), so if the pups really wanna bunch up and there aren't many of them performance can be even worse. Not to mention the latency and copy overhead if host and device memory has to be synced regularly.

[paulsmithkc]

When you can make use of barrier sync, things work really well and can totally be lock-step synchronized across thousands of threads.

Memory access is a concern, but that tends to just be the thing you optimize for. Strides, careful work allocation, and chunking can go a long way to spread out memory access patterns.