M.
At 06:25 PM 2/17/2006, you wrote:
Hi Don,
I would like you to consider re-scheduling the telecon rather than
cancelling. There are several groups now interested in getting cell blades
and it might be a good idea to coordinate efforts. I also have the
Observatory proposals in hand, and could use some extra eyes (but not Chris
Smith or Ron Lamber, since they are contributors to the AURA proposal) to
examine the Data Communications sections. Thanks!
Jeff
> From: "Don D. Dossa" <[EMAIL PROTECTED]>
> Reply-To: LSST Data Management <[email protected]>
> Date: Fri, 17 Feb 2006 15:13:52 -0800
> To: [email protected]
> Subject: [LSST-data] Tech Assess concall on Feb 20 is cancelled.
>
> The tech assess call for 2/20 is cancelled since it turns out to be a
> national
> holiday. I don't know how many people will be home that day, but it
> sure
> includes me.
>
> On another note, I have a proposal for the order of readout of the
> CCDs on
> each raft that minimizes the time required for the crosstalk
> calculation.
> I have another plan for multiplexing the 25 fibers (and telemetry
> line) that
> go into the IB switch on the mountain into the 10 nodes that drive the
> data down to the base. The design will automatically and transparently
> recover from the failure of any 1 of the 10 nodes on the mountain. No
> one
> node is now a single point of failure.
> The addition of a second IB switch on the mountain eliminates that as
> a single point of failure. This is probably as far upstream we can do to
> add redundancy and insure no data is lost except for a fiber cut
> connecting
> the mountain to the base.
> I will write this up and send it out to the team during the week of
> 2/20.
> Don
>
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