@olegil

Quote:

the client will run about 15 times slower than the host. Only works on x86 hosts."

Not bad. That could be roughly G4 1 GHz+ on recent i5/i7 CPUs.

@pavlor

Well only one core will be used, 1000 cores 2 Ghz becomes like 133 Mhz 1 core.

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@Develin

Surely adding OpenFirmware support to PearPC isn't impossible? I think I read something about a PearPC dev planning to spend time on it a while ago.

I think being able to emulate an OS4 or MOS system would give the platforms a boost user-wise. Especially for the OS4 camp, where you have to spend $1000 or so just to get started (unless you get a good deal on a used system).

Last edited by Channel_Z on 04-May-2012 at 03:01 PM.

@NutsAboutAmiga

Quote:

Well only one core will be used, 1000 cores 2 Ghz becomes like 133 Mhz 1 core.

Of course I meant single core performance!

@clusteruk

Quote:

Very interesting, I wonder if we should port to Aros

I ported it to AROS quite some time ago. An older version though (0.5 iirc)

@Channel_Z

PearPC seems to have very slow progress after the OSX moved to x86.
QEMU oth. is progressing steady and it allready has an entry in the OpenFirmware (and OpenBios) source tree plus some spartan support for emulating PowerMac allready.

Bigfoot has shown qemu running MorphOS (with some needed patches to be able to boot properly) on a PPC-machine so it is doable for sure =)
Someone need to take the step on x86 though =)

@pavlor

Ok, I'll bite. The i7-2600k is the most efficient yet, coming in at 9.43 dhrystone instruction per clock per core. Now, multiply that by a factor 3.4 (3.4GHz vs 1GHz) and you get 32. Divide by 15 which gives 2.1 DIPS/clock/core, a little less than the reported number for a G3. So no, not G4 (where the Altivec gives one heck of a boost). Add to that, this is with hyperthreading enabled, so you wouldn't get anywhere NEAR that number for a single threaded emulation. No way. So no, that could not be roughly G4 1GHz+ on an i7.

600MHz G3 maybe (so faster than my G3SE or a Pegasos 1). Given that Intel and AMD both have stopped going faster and started doing more cores/threads, the only way to get emulation any faster than that would be: supporting parallell processing in the emulator and the emulated system *badumtish*.

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@olegil

Quote:

Ok, I'll bite.

You may try.

Quote:

9.43 dhrystone instruction per clock per core

I like Dhrystone, but it certainly isn´t suited for comparing modern computers.


I will give you my "performance example": DosBox

Assuming Pentium 4 1.4 GHz is as fast as G4 1 GHz in single core integer operations (axcept cases where AltiVec is used).


Core 2 Q6600 based computer can emulate CPU in DosBox 5 times (in sense Y=5*X) faster than Pentium 4 1.4 GHz.
Now, I can reach on i5 (not top of its generation) based computer of my brother even 2.5 times better CPU performance in DosBox) = 12.5 times faster than Pentium 4 1.4 GHz.

Conclusion: This DosBox case shows current i5/i7 CPUs are at least 12 times faster than Pentium 4 1.4 GHz in single core integer operations.

Last edited by pavlor on 05-May-2012 at 03:57 PM.

@fishy_fis

Quote:

fishy_fis wrote: @clusteruk Quote: Very interesting, I wonder if we should port to Aros I ported it to AROS quite some time ago. An older version though (0.5 iirc)

is it downloadable???

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http://serk118.blogspot.com/

Quote:

2GHz speed

Damn, where's my screenshot of my A1200 running MacOS8 in Fusion on 060/50MHz and showing 14GHz 040 in MacOS

in the first post i added a third test
some application in action like Cinema 4D (i search gimp or blender, but for now, nothing), mpeg video with VLC 0.7.2, Photoshop CS (8) and firefox and Safari with an html with video.
Of course mpeg video is very slow and jerky, but this emulator hasn't no video acceleration 2D or 3D and it's very a miracle to see on screen something..
There is also a benchmark cpu, memory and fpu

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@olegil

Quote:

olegil wrote: @pavlor 600MHz G3 maybe (so faster than my G3SE or a Pegasos 1). Given that Intel and AMD both have stopped going faster and started doing more cores/threads, the only way to get emulation any faster than that would be: supporting parallell processing in the emulator and the emulated system *badumtish*.

AMD PileDriver core (as in Trinity APU) has improved IPC over Llano and Bulldozer i.e. AMD didn't stop improving thier single core performance.

Last edited by Hammer on 06-May-2012 at 02:05 AM.
Last edited by Hammer on 06-May-2012 at 01:30 AM.

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i know..users are lazy so:

http://www.youtube.com/watch?v=22SSz0sNt4I

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@Seiya

8:00 he is rendering a image, horrible slowly.
8:50 VLC play mpeg very slow and jerky

Now just imagine if he was going to play a DivX or AVI movie at 240p :-b

As I see it, web browsing is going to be slow, video is going to be slow, demos are going to run slow, and so on, so what the point unless all your going to use it to show how slow PearPC is.

If your interested in some thing that looks like AmigaOS then you have AROS, if you are interested in testing MorphOS or AmigaOS4 out then PearPC emulation will only give you false impression, because this does not run this slow on Sam460 or X1000 or a MacMini.

Even whit out hardware acceleration real hardware beats video playback on PearPC

Last edited by NutsAboutAmiga on 06-May-2012 at 12:15 PM.
Last edited by NutsAboutAmiga on 06-May-2012 at 11:43 AM.
Last edited by NutsAboutAmiga on 06-May-2012 at 11:42 AM.

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@NutsAboutAmiga

ok, pearpc is very slow on real apps, but we know that it is.
However OSX is very complex OS, mutch more than MOS and OS4.
we don't know never if PearPC could be or couldn't be run these OS.

i'm interested to PowerPC emulation on X86.

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Is version 0.5.0 still the latest version of PearPC? (the website is not showing any updates). If yes, that would mean that they are still "manually" emulating memory access (i.e., without help from the x86 MMU).

@ara

yes there is a 0.5.0 version

@thread

an update with mplayer OSX:

http://www.youtube.com/watch?v=qSwOaM0tcuw

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