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NOTE:
The EDT editor on UNIX is Frozen
(August 1997)

Due to budgetary constraints and soaring maintenance costs, support for the EDT editor under UNIX is now frozen at the current release (v6_3a). We expect that this release of EDT will continue to function properly for the forseeable future on our currently supported platforms. HOWEVER, if future hardware or software changes cause EDT to break, IT WILL NOT BE REPLACED OR UPGRADED. EDT will NOT be purchased for any new operating systems which may become supported in the future.

The Computing Division recommends that UNIX users migrate to a more native UNIX editor such as emacs, nedit, or vi. For those users who are not yet willing to give up the "look-and-feel" of the EDT keypad, the fermitpu editor (an EDT-style editor built using the tpu product) is a suitable replacement for EDT and will continue to be fully supported.

The Computing Division and several selected users have tested the EDT functionality of tpu and have judged it to be a satisfactory replacement.

EDT v6_3a, available from kits for Fermilab machines (machines in the fnal.gov domain), will run on all of our officially supported operating systems:

• AIX+3
• IRIX+5
• SunOS+5
• OSF1+V3

Additionally, EDT v6_3a will run successfully on IRIX+6 and AIX+4 (the flavors of the new farms). Note, however, that we do not believe that EDT will run on OSF1+V4.

We are currently configured with 100-user EDT licenses served from four distinct (and geographically separated) nodes. As long as these nodes remain stable, we expect no problems with EDT licenses. However, if any of these nodes are modified such that the current EDT license server will no longer run on that node (e.g., major OS upgrades, significant hardware replacement, nodename changes, etc.), then those 100 licenses will cease to function, and will NOT be replaced. (EDT should continue to function until all four license servers fail; however, as each machine fails, we lower the number of allowed concurrent EDT users and lose some redundancy in serving the licenses).

In past years, the cost of maintaining the EDT product (from BBC Computing) was under $1000/year. This year, BBC reviewed its license policy with Fermilab, and subsequently raised the maintenance charges ten-fold. The Computing Division believes that, with an alternative editor available, this money can be better used to provide other services for our users.