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Entry  Tue Aug 27 19:34:36 2013, Jamie, Configuration, CDS, front end IPC configuration hosts.png
    Reply  Tue Aug 27 20:43:34 2013, Koji, Configuration, CDS, front end IPC configuration 
       Reply  Wed Aug 28 19:47:28 2013, jamie, Configuration, CDS, front end IPC configuration 
          Reply  Wed Aug 28 23:09:55 2013, jamie, Configuration, CDS, code to generate host IPC graph hosts.png40m-ipcs-graph.py
Message ID: 9086     Entry time: Wed Aug 28 19:47:28 2013     In reply to: 9076     Reply to this: 9087
Author: jamie 
Type: Configuration 
Category: CDS 
Subject: front end IPC configuration 

Quote:

It's hard to believe that c1lsc -> c1sus only has 4 channels. We actuate ITMX/Y/BS/PRM/SRM for the length control.
In addition to these, we control the angles of ITMX/Y/BS/PRM (and SRM in future) via c1ass model on c1lsc.
So there should be at least 12 connections (and more as I ignored MCL).

Koji was correct that I missed some connections from c1lsc to c1sus.  I corrected the graph in the original post.

Also, I should have noted, that that graph doesn't actually include everything that we now have.  I left out all the simplant stuff, which adds extra connections between c1lsc and c1sus, mostly because the sus simplant is being run on c1lsc only because there was no space on c1sus.  That should be corrected, either by moving c1rfm to c1lsc, or by adding a new core to c1sus.

I also spoke to Rolf today and about the possibility of getting a OneStop fiber and dolphin card for c1ioo.  The dolphin card and cable we should be able to order no problem.  As for the OneStop, we might have to borrow a new fiber-supporting card from India, then send our current card to OneStop for fiber-supporting modifications.  It sounds kind of tricky.  I'll post more as I figure things out.

Rolf also said that in newer versions of the RCG, the RFM direct memory access (DMA) has improved in performance considerably, which reduces considerably the model run-time delay involved in using the RFM.  In other words, the long awaited RCG upgrade might alleviate some of our IPC woes.

We need to upgrade the RCG to the latest release (2.7)

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