[6156] in Release_7.7_team
Re: Athena Video Monitor Power Save information for outreach articles.
daemon@ATHENA.MIT.EDU (Jonathon Weiss)
Mon Jan 12 18:07:58 2009
Message-Id: <200901122307.n0CN7JXV005489@speaker-for-the-dead.mit.edu>
From: Jonathon Weiss <jweiss@MIT.EDU>
To: William Cattey <wdc@MIT.EDU>
cc: Robyn Fizz <fizz@MIT.EDU>, release-team@MIT.EDU
In-reply-to: Your message of "Mon, 12 Jan 2009 17:38:09 EST."
<F6E0E57F-F6BC-44FF-8134-02A5F1085E89@mit.edu>
Date: Mon, 12 Jan 2009 18:07:19 -0500
X-Spam-Flag: NO
X-Spam-Score: 0.00
Hi Bill,
I actually had a similar conversation with Laxmi this afternoon when I
ran into her. I dredged up some of our old research and came up with:
Assume 25W/monitor savings (conservative)
Assume 1000 workstations (actually 956 according to Dec. stats)
Assume 10 sleeping hours per day (conservative)
Assume 365 days per year :-)
Estimated power savings: 91.25MWh
Using Laxmi's (conservative) blended average cost to MIT of $0.11/kWh
Estimated cost savings: $10037.05/year
Of course, we really only have 1-2 significant digits, but we can
reasonably say $10K/year!
Even if we go with 950 workstations (which I don't think is strictly
required, since we wen't conservative on every other number there) it
ends up at $9500/year, and cover 85MWh.
Jonathon
> Robyn,
>
> Thanks for the chat today, and for offering to help to get the word
> out. Here is a first draft of everything that could be said.
> Perhaps you can suggest some amendments to say it more succinctly.
>
> ---- Begin draft ----
>
> On Tuesday January 13, 2009, Athena on Linux and Solaris enabled
> power save mode on its video monitors.
>
> Historically, Athena never shut off the video display. A screen saver
> with the Athena logo enabled an operator to identify dead machines
> just by glancing into the room. A blank screen meant a broken
> system. When power saving became standard practice, Athena disabled
> the power save feature, fearing that people would be too used the
> Athena convention, "blank monitor means dead Athena Workstation".
>
> The power consumed even by a low power LCD display is significant:
> We expect to save in excess of 75 MegaWattHours of electricity per
> year. (25 watts per monitor, 10 hours idle time, 900 systems, 365
> days.)
>
> We hope that Athena users will realize that a blank Athena screen no
> longer means a broken computer, but instead means Athena has finally
> "gotten with the program" -- that our monitors behave like standard
> monitors and may need a move of the mouse or the strike of a key to
> wake up.
>
> ---- End Draft ----
>
> -Bill
>
> ----
> Important: IS&T IT staff will *NEVER* ask you for your password, nor
> will MIT send you email requesting your password information. Please
> continue to ignore any email messages that claim to require you to
> provide such information.
> ----
>
> William Cattey
> Linux Platform Coordinator
> MIT Information Services & Technology
>
> N42-040M, 617-253-0140, wdc@mit.edu
> http://web.mit.edu/wdc/www/
>
>
>
