First Cell demo (48 MPEG 2 Videos)
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Have you or anyone else actually tried that?PC-Engine said:
That's just something you pulled straight out of your ass. A P4 system wouldn't have anywhere near the neccessary bandwidth to sustain that many streams. But of course, we know you'll say or do anything to poo-poo cell/ps3/sony. I bet once PS3 launches you'll start claiming how DC is technically superior and how feckin schmenue looks better than any of the PS3 launch titles. Would fit your profile perfectly.A dual core P4 with HT at 3.5GHz could probably do around 40 DVD streams.
Guden Oden said:Have you or anyone else actually tried that?PC-Engine said:
That's just something you pulled straight out of your ass. A P4 system wouldn't have anywhere near the neccessary bandwidth to sustain that many streams. But of course, we know you'll say or do anything to poo-poo cell/ps3/sony. I bet once PS3 launches you'll start claiming how DC is technically superior and how feckin schmenue looks better than any of the PS3 launch titles. Would fit your profile perfectly.A dual core P4 with HT at 3.5GHz could probably do around 40 DVD streams.
I guess you haven't been reading this thread.
48MB/s...
Now now kids, give it up.
To stay on topic, is it me or do i feel that the Demo was more to show off how they can get the SPEs to actually work all together. I mean, i feel like it's more of a software show-off than just a hardware show-off...
Or maybe i'm just dreaming.
To stay on topic, is it me or do i feel that the Demo was more to show off how they can get the SPEs to actually work all together. I mean, i feel like it's more of a software show-off than just a hardware show-off...
Or maybe i'm just dreaming.
Yes, as mentioned elsewhere. It was a demo of Toshiba's software platform. I guess it shows an MPG streamer code, and then applying it across multiple Cells without the coder needing to worry about scheduling.
Howver, as it's the only real-world demo of the chip to appear in PS3, everyone's desperate to read PS3 performance out of this. I think we can safely say, based on PC-Engine's comments, that PS3 will be about as powerful as a 3.5 GHz P4, which runs at maybe 20 GFlops?
Howver, as it's the only real-world demo of the chip to appear in PS3, everyone's desperate to read PS3 performance out of this. I think we can safely say, based on PC-Engine's comments, that PS3 will be about as powerful as a 3.5 GHz P4, which runs at maybe 20 GFlops?
Shifty Geezer said:Yes, as mentioned elsewhere. It was a demo of Toshiba's software platform. I guess it shows an MPG streamer code, and then applying it across multiple Cells without the coder needing to worry about scheduling.
Howver, as it's the only real-world demo of the chip to appear in PS3, everyone's desperate to read PS3 performance out of this. I think we can safely say, based on PC-Engine's comments, that PS3 will be about as powerful as a 3.5 GHz P4, which runs at maybe 20 GFlops?
CELL = 26 GFLOPS
PII@300MHz = DVD video+audio = 1MB/s
PC-Engine said:Correction make that 40MB/s for 40 streams.
Anyway it's half software demo and half hardware demo considering CELL will be used in Toshiba's new SED televisions.
My feeling. I mean, they know what Cell does (kinda), they know the performance of the chip, what people are worried about is how to get all those units to work together efficiently, and demos like this show just that.
Cell is Cell, it's a chip, it's a great chip, but we need to see if it can be used efficiently. Guess their job now that the chip is pretty much finished, is to show us that it's not a Saturn+PS2 kind of pain in the ass to code for!
randycat99 said:
WMV9 HD consumes a lot more processing power than MPEG2.
Right now I'm typing this message in while watching an episode of 24 in HD that I captured off the air last week, using my Media Center PC.
1080i ATSC MPEG2 on this single processor non-HT 2.53ghz/533mhz FSB machine, and I'm averaging about 33% CPU load.
This is with all the overhead of the Media Center app, the DirectShow architecture and Windows running.
Like I said before, 48 SD MPEG2 streams for CELL is certainly impressive, but it doesn't seem to be to be orders of magnitude better than current PC tech.
Fafalada said:
In my comparison I've simplified it and taken out the downscaling, but the point still stands.
McFly said:
Questionn is why didn't they use that last SPE? It certainly isn't to prove that there is more processing power left. Simple math says using that last SPE would yield 56 streams so why didn't they do it? Makes you think doesn't it?
PC-Engine said:
Err not really...
Maybe one SPU is (always?) reserved for DRM functions?PC-Engine said:Questionn is why didn't they use that last SPE? It certainly isn't to prove that there is more processing power left. Simple math says using that last SPE would yield 56 streams so why didn't they do it? Makes you think doesn't it?
rabidrabbit said:Maybe one SPU is (always?) reserved for DRM functions?PC-Engine said:Questionn is why didn't they use that last SPE? It certainly isn't to prove that there is more processing power left. Simple math says using that last SPE would yield 56 streams so why didn't they do it? Makes you think doesn't it?
Maybe the scaling SPU couldn't handle all of the additional streams.
PC-Engine said:
What is the point? That a P4 could do X amount of streams if we ignore output bandwidth?
PC-Engine said:Questionn is why didn't they use that last SPE? It certainly isn't to prove that there is more processing power left. Simple math says using that last SPE would yield 56 streams so why didn't they do it? Makes you think doesn't it?
My guess is that the additional streams could not be resized by the other SPE.
What are you talking about? I'm just removing the downscaling part in my example ie multiple streams at native DVD resolutions with audio being output to multiple windows. If you had enough memory on your Windows PC you could just open multiple windows and resize them to thumbnails sizes. I'm running an old PIII600MHz so I might try this actually using two downscaled DVD streams ripped to my HDD.
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