NDWFS reductions are currently being run on the computers
Chomper (Ultra-2), Zathras, Climber, Bunyip, and occasionally
on Kumbhakarna (all Ultra-60s). The computer Dropbear, a fast linux box,
(Red Hat Linux release 7.2 (Enigma) on PC architecture),
has recently been added to the group and is approximately four times faster
than the Ultra-60's. We use the accounts deepopt , deepopt1,
or deepopt2 for reduction of the optical MOSAIC data. Ask Buell or
Jenna for the passwords.
IRAF start-up files (login.cl, loginuser.cl)
are located in /home/deepopt/iraf (and /home/deepopt1/iraf; /home/deepopt2/).
Some of the scripts you will need later in the reduction process live on
Chomper in the deepopt account (/home/deepopt/iraf/scripts).
On Chomper, if you start IRAF from /home/deepopt/iraf/
(by typing cl from that directory) you should get the correct version of
IRAF. If, however, the version you see is older than V2.12 you need to
contact Jenna Claver or Buell Jannuzi for help.
To find out names of tape drives on various NDWFS computers
you can always go to the "tapecap" file from iraf and
look them up. Simply go to /iraf/iraf/dev/ and there will
be a listing of tapecap.* files. One for each machine, assuming
that these files have properly updated as new machines arrived.
This will list the IRAF names for each tape drive.
It's harder to figure out the unix name from these files, and
sometimes you will need to use tar which requires that
so we've listed our commonly used tape drives below. On Chomper, the DLT drive is named mtm when accessed through
IRAF, but if you're using TAR you will need to call it either
/dev/rmt/0hn for high density, /dev/rmt/0un for
compressed. Note that on these solaris-unix sun platforms the 'n' at
the end of the device name stands for 'no rewind', and is necessary
for 'mt' and 'tar' commands when you do not want the tape to be
rewound at the end of the current command. For example, if you use
'tar -tvf /dev/rmt/0n', this will produce a listing of the first tar file
on the tape on /dev/rmt/0 and leave the tape positioned ready to read
the second tar file (if there is one) upon completion of the listing. On Dropbear, the DDS4 (DAT) drive is named mta when accessed
through IRAF, but for TAR use /dev/st0. Note that for commands like
'mt' and 'tar' the proper device name to use when you do not want the
tape to be rewound is /dev/nst0. This is different under LINUX
RedHat 7.2 used on dropbear and solaris. For example, to get a listing
from this DDS4 drive you would use a command like 'tar -tvf /dev/nst0'.
On Ursa, the DAT drive is named mtf for IRAF, and /dev/rmt/8n
for UNIX. The Exabyte 8200 drive is mto for IRAF, and
/dev/rmt/2n for UNIX. And the DLT drive is mtp for IRAF,
and in UNIX it's /dev/rmt/5hn for high density or
/dev/rmt/5un for compressed.
On Climber (which should only be used if you can not
get access to previously mentioned tapedrives),
the DDS4 is named mtq in IRAF, and /dev/rmt/0
in UNIX. On Kumbhakarna, (which, like Climber should be used only if
you can't get access to other NDWFS tapedrives),
the DAT tape drive is called mtn for IRAF and
/dev/rmt/1 for TAR. The DLT drive is mtm for IRAF
and /dev/rmt/0cn for TAR.
Tape Drives on NDWFS Computers