MythBusters feat. NVidia: GPU VS CPU - Mona Lisa PaintBalled

[buca117]

@123saxon123 Basically the demonstration shows that a CPU renders only one pixel at a time while a GPU renders all of them simultaneously.

Hence Leonardo 1.0 shot one paintball at a time while Leonardo 2.0 shot 1100 paintballs at a time.

This is basically serial processing (CPU-one at a time) and parallel processing (GPU-multiple computations/shots done simultaneously) in explosive terms.

[DII117]

@123saxon123 GPU- Parallel Processing CPU- Serial processing.

[Jasper2428]

@123saxon123 GPU = Graphics processing unit CPU = Central processing unit.

GPU's have been invented to do graphical operations in which the CPU usually handles.

Get it now?

[BasiC7786]

@123saxon123 well i dont want to be a "know-it-all" but its actually quite a good "metaphor", since a cpu(32bit) is only able to process 32bit = 1pixel at once.

A GPU would be capable of creating more pixels at once.

[Theris1337]

thumbs up if u hear a guy shouting "i love pizza" at 6:56

:D

[tonganslop69]

@Theris1337 .... sounds more like he's saying, " i want free stuff!!!!". that would make more sense.... but hey, im just sayin. still funny though. :D

[MoskowFreak1111]

cpu is SLOW lolol

[Daromies303]

This to me looks amazing and just imagine the capabilities of our future

[GodOfRessurrection]

The slow motion camera is made of pure win

[rzuffiq]

pretty cool but what a fuckin waste of money!

[JoniiBoii]

lol epic fail as a science lesson! But prity cool for a demo!

[ertreri]

But there is a significant difference between the GPU and CPU... that makes rendering in the GPU signifcantly faster than in any CPU.

And that probably has to do with what people call the PIPES of the GPU.

If i am not mistaken, they are like tiny crappy cpus, that can each process in parallel instructions that are indepent of one another.

So if you have 16 pipes, each of them could be calculating a line of your output frame. So you'd have 16 dots rendered per cycle.

[densityduckk]

So the GPU is a series of tubes...just like the internet!

[ertreri]

more like the GPU is a large quantity of very small processors that can only do a small number of operations.

Or, otherwise, what you've said.

[ertreri]

BTW,

PS3 has a crappy old NVIDI graphic card, and an immensly powerfull 7 Core cpu.

If, in the near future, either CPU's or GPU's had to dissapear in detriment of one or the other. I have no doubt in my mind that Intel would slaughter to very last pennie, gaphics card industry. As it is, they work in co-op.

[stovnergutt]

@ertreri PS3 doesn't use the regular CPU but an Cell CPU that mainly works in gaming and SUCKS in everything else. Cell CPU moves towards GPU's. It would take 30 mins to start windows with PS3's Cell processor. Also, the difference between a Cell processor and GPU is very small.

CPU's are MUCH slower at rendering anything at all compared to GPU's. If (though it's not possible without a GPU) a CPU ran assassins creed you would at MAX see 2-3 fps. Nvidia should make something new to kill CPU's.

[ertreri]

@stovnergutt Man you've just said two paragraphs filled with crap.

The CELL cpu is a CPU. It is not regular? Why? Because it has 7 cores? Your CPU probably has 2. The other has 5 more.

The PS3 would take 30 minutes to start windows? LOL It seems to start its own OS pretty fast, I am sure it would start windows almost as fast as the disk takes to read the OS code, and not much longer.

"CPU's are MUCH slower at rendering anything at all compared to GPU's."

Yes, GPUs were made just for that.

[stovnergutt]

@ertreri "Go to wikipedia and read about cell processors." The regular CPU and the cell cpu is two very different things. My first build has 4 cores (Q9650) and my second 7 (i7-980X go figure..)

PS3 costs less than the first i7 (which is pretty old now) so think about it.. Also, 6 out of the 7 cores are used in PS3. Cell processors are ONLY made for multimedia and gaming, that's why it's MUCH cheaper. Also, PS3's OS are coded like a GAME to take advantage of the Cell processor...

[ertreri]

@stovnergutt "The regular CPU and the cell cpu is two very different things."

Which is why the PS3 does not support windows.

"Also, 6 out of the 7 cores are used in PS3. "

Wrong, 7 processors are used, you only get access to 6. The seventh is dedicated exclusively to run the PS3 OS code.

"Cell processors are ONLY made for multimedia and gaming"

They are made for calculating complex physics and other sort of tasks quicly. mpt remdering. Still, they can perform real time ray-tracing. So!

[NewLynxChannel]

@ertreri It's not the PS3 that doesn't support Windows, it's the other way around. Windows doesn't support PowerPC-based processors. Also, you're talking about the SPEs, which are SIMD units, not cores. Indeed, six of them are available for games, but the seventh is reserved for XMB, not for the operating system. And finally, Cell is nowhere close to being capable of real-time ray tracing. Even GPUs that are much more powerful can't do that, let alone a $38 single-core chip like Cell.

[fatandhorny]

@ertreri Thinking the Cell is a regular CPU and has 7 cores shows a complete lack of understanding what the Cell actually is - it's architecture is completely different to your standard CPU and it doesn't have cores like your standard CPU. It has one PPE and eight SPE's.

[Jasper2428]

@fatandhorny Correct, it has 1 3.2 GHz processor and 7 minor processors, think of the other seven as calculators.

[ertreri]

And nother thing, the myst buster guys obviously know very litle about informatics... if they know anything at all; and they are oviously making a promotional video for Nvidia.

And finally, if GPUs - unless i am very much mistake (multimedia is not my area) - are not used to calculate you games artificial intelligence. Those bots taking corners, throwing granates at you and what not... All that code is run by the CPU.

So forget it, if you think you can call a CPU useless for gaming.

[IbnFergus]

A CPU, like Leonardo, plots and places individual dots one at a time. A GPU can work in parallel, calculating and placing many dots all at once

[ertreri]

LOLOL

IF that is true, it is either because:

1) The library making the pixel rendering on the CPU is single threaded

2) If the library is decent and performing parallel redering (process wise), then the comtuer onle has a single core.

So no, technically, there is not that that much of a difference. But graphic libraries like, Drict X and Open GL are specialised in producing very specific code that is meant to be run in GPUs. And GPUs were made for rendering.

[hanrinch]

nvision is just an lower clocked version(700mhz) of netburst cpu that intel had abandoned long time ago. but however with the aid of PHYSIC and CUDA technology it is actually fix the fatal weakness of netburst that ppl were argue for years had actually solved. with the extreme pipeline + 24kuops trace i dont think neither intel and amd can make this challenge.

[Ariadan]

hehe.. at 8:50 - 8:51 you can see the Mona Lisa in the air.. looks really nice.. and yes.. I realise that this comment seems a bit retarded concidering the comments preceding it.. XD

[Tacotruck1166]

GPU uses logical algorithms as well as triangles to form a dynamic coordinate plane for everything you see on your computer.

[FilipeMaia24]

OMFG ... Amazing ... Especialy the slow Motion part , simply fantastic ... Great video mate , thx for posting ..

[theMetaKnight]

Would be awesome to have Leonardo 2.0 as a stationary turret in a paintball match XD

[Psytrin]

This seems like a much better crowd than the Youtube Live! crowd.

[CleverDan31]

that's too cool

[thatsmybutt]

i still have no idea what the heck a GPU does.

[phillyfan06]

paints pictures omn ur screen. everytinhg u see

[eppi92]

uhhh..wans't the whole point that while CPU does processing one process at a time (pixel by pixel on the smiley), GPU can do a lot of processes at the same time (parallell-processing, all pixels painted in one blow giving us the Mona Lisa).

[phillyfan06]

wat it? Missed that lol. but your right i think

[d6d1]

As Phillyfan06 said, it's a processor in charge of drawing images on your screen.

A CPU can do multiple operations too, but, it's designed to allow a lot of possible operations on a certain amount of data.

GPUs on the other side, are designed to allow little possible operations, but on a big amount of data. That is because graphics are a highly paralellizable (sp?) load, whereas most of the code a program has is serialized.

[RickCoppola]

what was the first world record the mythbusters got?

[sivartis]

The slo-mo on that is amazing.  Thanks for posting!

~Trav

[eczema3]

that is bad as dude.

[waterdragon918]

nice Vlo

[freshboy7777]

now thats a paintball gun!!!

[VlAaAaDiMiR]

sh*t dats amazing xD

[lionel545]

yeah amazing

[rnb4321]

Amazing!! :D