Name: WE GOT INTEL'S PROTOTYPE GRAPHICS CARD!!
Uploaded: 2019-03-24T05:08:42.000Z
Duration: 14 min 45 s
Description: Thousands of YouTube videos with English-Chinese subtitles! Now you can learn to understand native speakers, expand your vocabulary, and improve your pronunciation...

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Intel keeps very careful track of its internal engineering samples,

going to great lengths to ensure that if they leave the lab it is in pieces so small that they could never be reassembled again.

So the first question we need to answer is: how did we get our hands on this thing?

eBay obviously. What can't you buy on eBay?

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So the seller turned out to have been a contractor at Intel a few years ago,

who in the middle of a sixth-floor renovation went dumpster diving through the boxes full of "junk" that was destined for the e-waste pile.

Apparently It was a treasure trove of press samples, laptops and this GPU-looking thing,

that was noteworthy for being blue instead of green or red.

You see, by that point, project Larrabee - this, sort of - had been cancelled for years

and how many years depends on which cancellation you're going by.

So talking to Tom Forsyth, who was one of the key team members,

he figures they got cancelled anywhere from four to five times, and remembers getting these weird memos.

Yeah... You guys are gonna see some headlines. It's just a thing. None of you were laid off. Just keep on working.

BT-dubs you've been rebranded Xeon Phi. Thanks, bye.

That's actually a somewhat complicated question, but because it's got a DVI port, not to mention DisplayPort and HDMI soldered onto it,

it is technically an engineering sample board for Intel's first and to date only dedicated graphics card.

Now, most people who follow the mainstream tech press believe that project Larrabee was an abject failure

but as is so often the case, the truth is actually stranger than fiction.

Not only was it a success, but it powered TH2, which was the world's most powerful supercomputer for over two years,

and ten years later you can actually still buy its descendants, either in socketed form, as we reviewed just last year,

or on Amazon for a cool 1,500 greenbacks.

So as it turns out, the goal of the program never was actually to create a gaming GPU.

That was just a workload that was already fairly well understood at the time because, you got to remember,

back in the mid 2000s the idea of using a GPU as a general-purpose computing unit was just emerging,

so this idea of using it for gaming was actually just a small part of a business case to build a processor

that had many highly efficient x86 cores that could be easily just, like, slotted into these powerful supercomputers.

But that doesn't mean that it couldn't have been used for gaming.

In fact, by the time they wound down the units that were working on graphics, they had about 300 of the top selling games on Steam

running on the thing, with a card just like this one as the only GPU in the system.

And the way this whole thing worked is incredible. Now, a normal graphics card, or GPU rather, uses a lot of fixed function hardware,

so if you told it "okay look, I don't need shaders, just draw a ton of tiny lines with really nice anti-aliasing"

so it's pretty much CAD, in a nutshell. It would use only a fraction of its hardware.

But with Larrabee, everything is software, so the whole chip is lit up doing that.

So that actually help to offset the x86 overhead a fair bit. This was the fastest CAD card at the time, and it had other benefits.

With regular GPUs, you might run into a situation where enabling a particular feature in a game might hit the AMD users a lot harder than the Nvidia users or vice versa.

So during development, AMD and Nvidia, they both have to actually guess as best they can what the next couple of years of games will demand,

and then try to look into their crystal ball and build their hardware around that.

Larrabee, no such limitation. This thing is a full-blown computer with up to 61 quad-threaded cores running a normal operating system like FreeBSD.

Like, you could actually telnet into the thing and run a top command and see a list of all the processes that were running on it,

and if you were running a game you'd see, I don't know, 128 or 200 processes called "DirectX graphics",

and you could do that while the thing was working!

So if you wanted you could cordon off some of the cores and use them for something else,

or you could just yolo it and throw another workload into the mix and then just let the processor manage itself.

The only non-programmable hardware on this puppy is the texture unit which takes very simple commands.

I mean, wrap your brain around this. The thing that I'm looking at right here is Intel's first ever DirectX 11 GPU.

Even though it was built before DirectX 11.

So this was possible because all of those graphics card features that are normally running in hardware are just running in software,

so you could actually update it to DirectX 11 or DirectX 12 With a driver update.

Now, there are some caveats here. I mean, there's a reason that the thing never made it into a computer near you.

It wasn't as efficient as a dedicated graphics card for a lot of things.

So it only got about a quarter of the performance in games as a comparably power consuming card from AMD or Nvidia at the time.

But it was really good at certain graphics workloads for a number of reasons and-

I mean if you think about it and you look at how far off they were,

considering that they were effectively emulating dedicated hardware, it's damn impressive.

Intel at its core, ha-ha, is a hardware company, so they wanted all the features completed so they could either ship this thing or can it.

Because in the hardware world making up a four times difference in performance is impossible and you might as well just pull the plug,

but the team wanted to work on performance optimization instead, because in the software world

it's not unheard of to go from, like, two pixels showing up on a screen and dog slow to a hundred times faster, in a week if you have a breakthrough.

And it got to the point where they had to have separate teams for performance and for features, to get management off their backs.

So the performance team actually got Quake running, like really fast,

but then they found out that Quake was this weird edge case and the architecture would have to be completely redone.

I mean to give you that some idea of the dysfunction, at one point there were three to four software teams

with different ideas and working on different rendering architectures.

But depending who you ask, the continued development would have been worth it. I mean imagine this:

instead of turning anti-aliasing on for an entire scene, imagine if a game developer could say

"Well, you know what? This sky is not important to be anti-aliased.

Why don't we just focus all of our AAA on, you know, these characters here, or this foliage there?"

Or how about this, like, "oh crap that texture wasn't loaded. You know what, let's just procedurally generate a placeholder."

Arguably the stupidest decision that was made was to make the Larrabee graphics team

and the GEN graphichs team, which is what Intel calls its integrated graphics internally,

compete together for the same budget, and then like make internal presentations arguing about why their approach was good in the future

and the other groups was bad and not the future, because they were both perfectly suitable for what they were doing.

Larrabee was never going to be a 5 watt part that you could fit right into a CPU, and a 200 watt PCI Express part was nowhere on the roadmap for GEN.

is not "Knights Ferry". That was the first Larrabee revision that had some deal breaking bugs.

Apparently the saying in the hardware industry is "always plan to make a prototype, since you'll end up making one anyway".

So this is Knights Corner and probably has anywhere from 6 to 16 gigs of RAM, and up to 62 cores

depending on how many of them had some manufacturing flaws.

I wasn't not gonna do that at this point. I spent like $400 on this thing off of eBay.

I've got no drivers for it, so it's actually-

this is the first time I've turned it on so it is very possible that it won't manage to display anything even in 2d,

By the way, if anyone out there has the secret sauce drivers or has access to the secret sauce drivers that would make this run games,

I mean, assuming that it even works, which we don't know yet.

I- I actually haven't tried this, I wanted to save the suspense for the video.

This is like far more postcodes than I'm accustomed to seeing.

But it hasn't stopped. And it hasn't, like, rebooted. We've got some kind of uh...

It looks like it stalled on D6, but I don't know what that is.

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WE GOT INTEL'S PROTOTYPE GRAPHICS CARD!!

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