This site has been in operation continuously since December
For some history see below. Currently the server runs in the Amazon
cloud, and is backed up by a number of physical servers at locations
ranging from St. Louis Missouri in the United States to Florence Italy.
The main site receives 18,000 hits per day, which translates
into roughly 1,200 different visitors. The server has available about 2.7 gigabytes of material in roughly 5,000 html, pdf, mp3 and avi
Over the years, I owe a great debt of gratitude to the National Science Foundation who have sponsored much of the hardware, software and research in the form of grants
SBR-93-20695, SBR-96-17899, SES-99-86170, SES-03-14713, SES-08-51315 and ICES-12-15302. Any
opinions, findings, and conclusions or recommendations expressed in
this material are those of the author(s) and do not necessarily reflect
the views of the National Science Foundation.
This is the fifth generation Economic and Game Theory
Server. The original server was a Dell XPS90 with a 90MH Pentium
processor, 32MB RAM and 1G of hard disk space running Windows NT
Workstation 3.5. The second was a Dell Optiplex GX Pro with two 200MH
Pentium Pro processors, 128MB RAM and 13G of hard disk space on a SCSI
Bus. It ran Windows NT 4.0 with Service Pack 3 and the Xitami
webserver. For most of 2001 the server was a Dell Precision Workstation
420 with two 1GH Pentium III processors, 1G RAM and 140G of hard disk
space on a SCSI bus. The site was gradually switched to Red Hat Linux
7.2 beginning in October 2001. Since the Precision failed in late 2001,
no longer runs only on my office computer, but is mirrored on a number
of machines. The www.dklevine.com
address floats between these sites.
Beginning in 2009 these systems have been gradually transitioned from Fedora to Ubuntu.
In early 2011 the main webserver moved from a physical machine located at WUSTL
to a virtual machine running in the Amazon Cloud.
The list below is obsolete and is retained for historical purposes
In service September 2003. A Dell Optiplex
GX270, 3.0GH Pentium
4, 1G RAM, 120G drive. Memory and motherboard replaced April 2005.
In service February 2002. Originally lev0202. Dell
replaced the Precision Workstation: dual 1GH
Pentium III, 1G RAM, two 70G drives, SCSI Bus. After
412 days without any down time one of the hard drives failed
(again) following a power outage on March 25, 2003. Dell
provided a replacement drive, and the system was placed back in service
with a new name April 15, 2003. Fan replaced April 2005.
This is the Dell Optiplex upgraded to
42G of hard disk space: dual 200MH Pentium Pro, 128MB RAM, SCSI Bus.
- dimxps.dklevine.com A Dell Dimension XPS, 80M RAM,
drive; last of the 586 machines I own; the rest are all 686.
Retired January 2005.
In service November 2001. A Dell Optiplex GX240, 1.8GH
4, 1G RAM, two 40G drives.
- lev0412.dklevine.com, lev0502.dklevine.com In service
January 2005. Dell Optiplex 170Ls, 3.2GH Pentium 4, 1G RAM, 160G
drive. Both needed a replacement drive within a months of going into
With the exception of lev0111, these servers are connected to
the internet through a 100MBS ethernet connection through switching
hubs connected via router and fiber optic to the UCLA backbone. This
connection is maintained by the Social
Science Computing Network. The campus backbone is connected to the
internet by a T3 connection. Lev0111.dklevine.com
is on an ADSL connection maintained by Pacbell.
On the primary servers the software is Fedora Linux 3 running the Apache webserver 2.0. The databases
are in mysql; scripts are written
using the open source scripting language
html is maintained using NVU.
This site receives
6000-10000 hits per day, which translates
into roughly 700 different visitors. The server has available about 76
Megabytes of material in roughly 900 html, pdf and PHP files.
[update March 29, 2006] Current traffic is about 21,000 hits
per day or over 1500 different visitors. There is now about 900
Megabytes of material in 1800 html, pdf, php, as well as mp2 and avi
The original web design was done using Microsoft Front Page;
at that time the webserver was the built-in webserver that came with
Windows NT 4.0, and the scripts were written in Microsoft ASP. Those
were discarded in favor of cross-platform, and where available, open
source products. When I originally chose DOS over the Macintosh 20
years ago, I did so because DOS gave me control over my computer and
Apple did not. Now some 20 years later, Microsoft, for similar
marketing reaons, has headed down the same closed properietary route
that led Apple to initially high profits, followed by utter collapse.
This led me to a long term project of replacing Microsoft software
The project began when I received complaints about the NT
Workstation limitation of 10 connections on the web server.
Unfortunately, despite purchasing a copy of NT server, there was no
sensible upgrade path from the workstation to the server. Recognizing
another Lotus in the making, I began the project of replacing Microsoft
products with other products wherever practical. To be clear, I think
that Microsoft makes very good software. However, as the advantages are
outweighed by the proprietary formats, licensing restrictions and copy
protection schemes, I bid farewell to Microsoft.