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Nov05 LBA observers

From: <Chris.Phillips_at_email.protected>
Date: Fri, 28 Oct 2005 17:18:37 +1000 (EST)

Hi all,

Please could all VLBI observers for next week read this and get back to
me if you don't understand anything. I will send more detailed notes
later.

There are a number of changes to the disk based recorders for this
session.

All observatories will be using the new recording PCs. These are a dual
cpu (AMD64) rackmount system. The PC names are
        pkvsi1 .atnf.csiro.au
        cavsi1
        mpvsi1
        hovsi .phys.utas.edu.au
        cdvsi

Note that the utas machines are not directly accessible by their domain
name outside utas, due to the way the network is setup (this is
unavoidable).

All recording should be done logged in as "vlbi".

The new machines have up to three data directories for recording. (Note
the names may change...)

/data/internal 2x400 GB SATA disks in software raid (not
                        removable). The operating system is on the
                        same disks for they are not suitable for
                        high speed recording. Should be find
                        for fringe tests (128 Mbps) and single DAS
                        recording (256 Mbps).

/data/removable 4x400 GB removable IDE disks in software RAID.
                        These are suitable at all recording rates

/data/xraid0 Apple Xserve RAID systems. The exact disk names
                        may vary from observatory to observatory (for
                        example Mopra will have xraid0 and xraid0b).

vsib_record has had minimal changes since the last vlbi run. Fractional
observing times (e.g 2.5h) should now work.

Jim Lovell has written a tkperl GUI that can be used to control
vsib_record. It can probably be considered in a stable beta form. It can
be started by running "disko" as vlbi. More details later.

The documentation for a lot of this is available at
http://www.atnf.csiro.au/vlbi/evlbi. I am working on an index for this...

Cheers
Chris
Received on 2005-10-28 17:18:53