Problems with Scyld

Donald Becker becker at
Mon Nov 5 15:53:31 PST 2001

On Mon, 5 Nov 2001, Art Edwards wrote:

>  am attempting to install 16 new nodes on an existing Scyld network 
> (Scyld 27Bz-7) with little success. The new nodes have #com905CX ethernet
> cards. When I attempt to use the standard Scyld tools, boot the slave node, 
> drag the new MAC address to the list and click apply, nothing happens. The
> slave node continues to issue RARP attempts. When I build one of the new 
> nodes into a head node and attempt the same process, the MAC address does
> not appear in the new addresses column. It seems as if the new ethernet cards
> can send, but not receive. 

The new "CX" cards require an updated driver.  The update is in 27*z-8,
or you can compile the driver update set from

You'll have to create new boot images and second stage images.

Donald Becker				becker at
Scyld Computing Corporation
410 Severn Ave. Suite 210		Second Generation Beowulf Clusters
Annapolis MD 21403			410-990-9993

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