LHO Data Monitor Status

Present Hardware Status

The first DMT compute server  (a Sun E-450 with four 400-MHz CPUs and 1GB of memory) has been installed at the LHO site, and the DMT software has been installed on it. The DMT server is currently connected to the GC and CS networks by an ATM OC-3 link and to the LDAS network over an ATM OC-12 link. The node names from the different networks are tabulated below.
GC sand.ligo-wa.caltech.edu 198.129.208.150
CDS gdsdmt 10.0.1.152
LDAS dmt 10.3.1.152
The policy for allowing off-site use of this machine is given on the policy page. Anyone wishing to use this machine, should contact John Zweizig or Daniel Sigg.

Planned Upgrades

Within the next few weeks (before the end of september) we intend to install a Sun Ultra-10 which will serve as a dedicated frame builder for the DMT. The frame builder machine will be connected directly to the DAQ system by a reflective memory link and will distribute the data to the DMT machine(s) over a GigaBit EtherNet.

It is currently planned to support a multicast data distribution from the dedicated frame builder. This will require some modification to both the CDS network data server and to the DMT data client (DpushF). It should however, open up the possibility of adding an arbitrary number of computation servers for use as data monitors.
 

Installed Software

Most of the necessary packages for LIGO data monitoring and for software development have been installed on the DMT compute server. The data monitoring software are described elsewhere on-line, especially on the pages about DMT Data Distribution and the Sandbox Library.

The primary development tools are those supplied by GNU and egcs. This decision was made because the Solaris C++ compiler doesn't provide some of the features used by the LIGO-specific code.

The packages installed so far are tabulated below.
 
Solaris 7 Solaris operating system
GNU Public domain software
    binutils 2.9.1 Gnu binary utilities
    egcs  1.1.2 Experimental Gnu Compilation System
    emacs 20.3 Editor
    gdb 4.18 Gnu Debugger
    gzip 1.2.4 Open source data compression and decompression
    make 3.77 Gnu make utility
    perl 5.005.02 Pathologically eclectic rubbish lister
    stow 1.3.2 Software installation utility
ssh 1.2.27 Secure communications (protocol 1)
ssh 2.0.13 Secure communications (protocol 2)
DMT 1.3 Data Monitoring toolbox

If there is any package which you consider necessary, but isn't already installed please contact John Zweizig to have it installed.



Last Update: August 12, 1999
Please send comment and suggestions to: John Zweizig