Re: Accessing MMIO PCI space - crossplatform

Jakub Jelinek (jj@sunsite.ms.mff.cuni.cz)
Sun, 15 Nov 1998 12:21:46 +0100 (MET)

> I heard of a 133 MHz PCI BUS project. In 64 bit mode, the total bandwidth
> will be 53.2 GB/sec. Perhaps future Java Systems would need such a memory
> bandwidth ;-).
> The SUN method to enhance computing seems worse than Intel/M$$ one to me
> in some aspects.

I don't know how can you use on a single PCI bus 64 PCI devices, nor find it
easy to build a large system where you can mix buses (have 10 boards PCI and
5 boards with other bus type), not counting that the backbone bus in the
Enterprise servers is IMHO superior to PCI (256bit packet switched bus).

BTW: I don't know much about 133MHz PCI project, but simple math tells me it
probably is not either 64bit, or runs much faster, as 133MHz x 8B = 1.03GB/sec.

Cheers,
Jakub
___________________________________________________________________
Jakub Jelinek | jj@sunsite.mff.cuni.cz | http://sunsite.mff.cuni.cz
Administrator of SunSITE Czech Republic, MFF, Charles University
___________________________________________________________________
Ultralinux - first 64bit OS to take full power of the UltraSparc
Linux version 2.1.128 on a sparc64 machine (498.80 BogoMips).
___________________________________________________________________

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu
Please read the FAQ at http://www.tux.org/lkml/