Was sold from Dave Haynie ... this is the prototype for Multi processing on Amiga machine

http://www.ebay.com/itm/131448977394

Incredible

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@tlosm

That's cool :)

@tlosm

Very cool.

It should be interesting to inspect any disks of a multiprocessor AmigaOS 3.1 Version (the last developed by Commodore), or any sourcecode released for developers of this beautiful card, in order to discover how they solved the multiprocesiing issues.

[EDIT]

In the description of the object more or less Dave explained how dual CPU system should had worked!

Last edited by Raffaele on 23-May-2015 at 07:05 PM.

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@Raffaele

It really is no problem extending Amiga OS for SMP multiprocessing. It is straight forward by using proper synchronization instead of the "lock the world" variants.
The problem is getting the system to be backwards compatible! Otherwise a lot of software would have to be rewritten, something perhaps realistic back in the days of Commodore (at least if they had the money to do so) but IMHO almost impossible today. But I could be wrong. :)

The best words was closed in a single line of Dave selling ...


Quote:

Imagine an Amiga 4000T with eight additional 68040s or 68060s back in the mid 1990s. Ok, sure, and a souped-up power supply and liquid cooling

Yes ... we can immagine how this will make the world totally changed today ...

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Quote:

tlosm Yes ... we can immagine how this will make the world totally changed today ...

Wouldn't have made a difference, because there's nothing special about having multiple CPUs in one computer.

@Thorham

hope you write this just for trolling

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@Thorham

Quote:

Thorham wrote: Quote: tlosm Yes ... we can immagine how this will make the world totally changed today ... Wouldn't have made a difference, because there's nothing special about having multiple CPUs in one computer.

.

Huh? Would have been multi-core before there was multi-core

Quote:

tlosm hope you write this just for trolling

Nope, no trolling.

Quote:

QuikSanz Huh? Would have been multi-core before there was multi-core

Having multiple CPUs in a computer isn't the same as having multiple cores in one chip.

Really. Multiple CPUs in one machine isn't a big deal. Even some older game consoles have that. NeoGeo and SNES come to mind. It was just not common in normal consumer computers, but that doesn't mean it's a big deal. Later you got peecee mobos with multiple CPU slots for single core CPUs. It's nothing special.

@QuikSanz

Quote:

Huh? Would have been multi-core before there was multi-core

These cards are neither.

Actually they are more like the x86 bridgeboards only containing a seriously crippled Amiga instead of a "full" PC.

Nowhere near SMP.

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@Kronos

probably guys you loose the focus.

It work like this ...
http://en.wikipedia.org/wiki/Non-uniform_memory_access

probably you dont remember what was the old multiple cpu systems in 1990 era

and just for remember it is a test experimental board

Last edited by tlosm on 24-May-2015 at 07:26 AM.
Last edited by tlosm on 24-May-2015 at 07:23 AM.

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@tlosm

What focus ?

That the board was little more than a brainfart ?
That it was nothing special compared to the "Transputer" boards or SlotPCs available at that time ?
That it does indeed contain a "full" computer running it's own OS (modified AmigaOS2.x) ?

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@Kronos: clearly not. If you put 2 or more processors on a board like that, it doesn't mean that the Amiga o.s. will run on it, making use of them.

As megol already pointed-out, SMP is not possible IF you want keep full compatibility with the existing software.

@tlosm

I'm glad Dave Haynie got $3100 for it. I wonder who bought it for that much? Trevor?


Scott

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Or Trevor or some museum ... or some other amigan really rich :) ... for sure not me

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#nomorea-eoninmyhome

@Thorham

Quote:

Really. Multiple CPUs in one machine isn't a big deal. Even some older game consoles have that. NeoGeo and SNES come to mind.

It would have been back then. The SNES and Neo Geo are using the other CPUs as co-processors, something the arcade boards had already been doing for ages. They were dedicated CPUs for a particular task (e.g. the sound on the Neo Geo). It can't be compared at all to having two processors capable of running the same binaries independently.

Quote:

Spirantho It would have been back then. The SNES and Neo Geo are using the other CPUs as co-processors, something the arcade boards had already been doing for ages. They were dedicated CPUs for a particular task (e.g. the sound on the Neo Geo). It can't be compared at all to having two processors capable of running the same binaries independently.

Perhaps it wasn't done because no one though it would be very useful in home computers. Or because of cost (different requirements than consoles).

@megol

Quote:

megol wrote: @Raffaele It really is no problem extending Amiga OS for SMP multiprocessing. It is straight forward by using proper synchronization instead of the "lock the world" variants. The problem is getting the system to be backwards compatible! Otherwise a lot of software would have to be rewritten, something perhaps realistic back in the days of Commodore (at least if they had the money to do so) but IMHO almost impossible today. But I could be wrong. :)

It is a life lasting long time that I am saying to deprecate the entire old crap darn thing and go to new system SMP, memory protected and virtualized.

All old software should run only in emulation sandbox.
So when old Amiga software crashes it crashes only Sandbox and could be reloaded again in a scratch.

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@Raffaele

+1

@thread

Another invention that CBM managers did not like. 5 years later PC did it. Costing 3x the single CPU price.

When Babylon5 was rendered, it used 40 cores on A4000, just not SMP.

++
I have sometimes advocated for Amiga store kind of service that offers clustering as well.
So I could for example:
-send mp4 stream and get back mpeg2, mpeg1 or CDXL stream
-connect to screamernet for lightwave movie production
-compile large projects using the offered compile cluster
-etc.

Also, if I had T4240 instead of my PPC440, I could also join to the cluster, offering my extra CPU power to it.

Last edited by KimmoK on 25-May-2015 at 07:45 AM.
Last edited by KimmoK on 25-May-2015 at 07:43 AM.

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