Re: cluster list

[Greg Lindahl <lindahl@conservativecomputer.com>]

On Wed, Feb 28, 2001 at 06:47:30PM -0500, Albert D. Cahalan wrote:

> Each node consists of a CPU, local RAM, optional flash ROM, L3 cache,
> and a multi-purpose chip that does DMA between nodes. There isn't any
> expansion opportunity on the node, or even a PCI chip.
> 
> So stop assuming clusters have network cards!

Your nodes are much like CPUs on the Cray T3E. Sometimes people think
of your DMA chip as a network card; I do DMA puts and gets with
Myrinet network cards. Devices on a system like this usually sit on
special CPUs and you have to DMA them a request or pass a message to
the remote OS instance in order to talk to the device, instead of
talking to the device itself.

-- g

Linux-cluster: generic cluster infrastructure for Linux
Archive:       http://mail.nl.linux.org/linux-cluster/