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Author Topic: Prometheus owner?  (Read 5843 times)

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Offline CrusherTopic starter

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Prometheus owner?
« on: November 27, 2003, 02:44:15 AM »
If you are, can you tell me everything you know about this card?  :-)
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Offline patrik

Re: Prometheus owner?
« Reply #1 on: November 27, 2003, 10:04:24 AM »
@Crusher:

I am not a owner of the card, but I can tell you a bit I have read about it.

From a hardware point of view the card is constructed with more modern technology than the mediators. The only direct benefits from that is that the design is smaller, should draw less current and produce less heat.

From a software point of view the company - matay seems very open about releasing information. You will for example get software developer kit with your board and the Prometheus is supported by the OpenPCI library. Not like Elbox...

The only real drawback I can see with this card is that the physical fitting of the card and pci-cards on it might be a quite experimental experience if so to say ;).


/Patrik
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Offline CrusherTopic starter

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Re: Prometheus owner?
« Reply #2 on: November 27, 2003, 07:20:46 PM »
Thanks for the answer, although I knew that already besides the thing that it has more modern tech. and you´ll get a SDK with it. That sounds great to me.

...and I think I like the OpenPCI attitude more and more know.  :-)
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Offline Jose

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Re: Prometheus owner?
« Reply #3 on: November 27, 2003, 07:26:47 PM »
Has there been any tests on CPU to VRAM memory with this one? What's the speed difference compared to a Mediator?
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Offline patrik

Re: Prometheus owner?
« Reply #4 on: November 27, 2003, 08:20:56 PM »
@Jose:

On the Prometheus homepage they claim that real transferrates between the Amiga and PCI-cards can reach 12MB/Sec.

Isnt there anyone reading these forums with a Prometheus who can test the transferrates and post them here?


/Patrik
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Offline Brian

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Re: Prometheus owner?
« Reply #5 on: November 27, 2003, 08:23:56 PM »
I got a Prometheus card... not in use though... still not come around to build my A4000 into a custom tower (which is nessesary to fit PCI cards).

Matay's info about Prometheus
Prometheus drivers etc.
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Offline patrik

Re: Prometheus owner?
« Reply #6 on: November 27, 2003, 08:42:38 PM »
@Brian:

I must just add the Prometheus Developer Section link which could be found in your last link. It explains quite thoroughly how the Prometheus functions, very interesting reading indeed.


/Patrik
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Offline patrik

Re: Prometheus owner?
« Reply #7 on: November 27, 2003, 08:45:01 PM »
@Brian:

What can I do to convince you to try the Prometheus with a graphics-card and then do a transferrate-test? :)


/Patrik
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Offline zipper

Re: Prometheus owner?
« Reply #8 on: November 27, 2003, 10:29:13 PM »
It's pretty slow, with a test called RTG from Trodas I got about 8.5 MB/s; you can compare game speed tests on http://amigaspeed.de.vu. But works well and w/o problems with Voodoo3.
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Offline patrik

Re: Prometheus owner?
« Reply #9 on: November 27, 2003, 10:46:22 PM »
@zipper:

Sounds like the speed you would get with a mediator.


/Patrik
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Offline patrik

Re: Prometheus owner?
« Reply #10 on: November 28, 2003, 12:35:38 AM »
Didnt Karlos make a program for measurement of transferspeed between the Amiga and the video-memory of a graphics-card which was used in a quite extensive test featuring quite some different PCI-buses. It would be interesting to see how the Prometheus would score with that program.


/Patrik
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Offline CrusherTopic starter

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Re: Prometheus owner?
« Reply #11 on: November 28, 2003, 02:43:49 AM »
Wow, what a respons to this thread... more... I need MORE  :-D

Oh and zipper, maybe the speed has something to do with which CPU you have?  :-?
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Offline Karlos

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Re: Prometheus owner?
« Reply #12 on: November 28, 2003, 02:48:59 AM »
@patrik

It was actually a pair of tests.

1) To see how fast the card's VRAM can be written to (which is bandlimited by the bus speed)
2) To see how the performance of Warp3D varies with state/raster size

The purpose of these tests was to help locate principal bottlenecks in the Warp3D system and to help determine the impact of bus speed (how fast data can be fed to the GPU) versus CPU speed (how long rasterization setup takes).

The tests were 680x0 only, principally to avoid the effect of context switching in the benchmarking (also slower therefore easier to measure accurately). Both CPU versions of each driver are usually compiled from a common source, so observations for the 680x0 version often apply to PPC also.

To measure bus speed only, all you need is the pixeltest program. I'd be happy to pass it on to anybody wanting to try it out on their promethius...
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Offline redrumloa

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Re: Prometheus owner?
« Reply #13 on: November 28, 2003, 04:55:05 AM »
I used to use Prometheus in a loaded towered A3000. I was very happy with the results using a Voodoo 3 and 10Mbit ethernet.

If I'm not mistaken there are new OpenPCI drivers available which expand the number of supported devices greatly.
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Offline patrik

Re: Prometheus owner?
« Reply #14 on: November 28, 2003, 01:50:46 PM »
@zipper:

What do you think about running Karlos pixeltest program on your Prometheus and post the results in this thread? :)


/Patrik
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