Alan De Smet

Systems Programmer, Center for High Throughput Computing, HTCondor

Why not connect the PCs into a network; write some software to schedule applications, share data, and handle security; and scrap the mainframe? Some installations did this, only to discover that at great time and expense, they had reinvented the mainframe.
— Gary DeWard Brown, System 390 JCL Fourth Edition, 1998
The university that produces the most blue chip CEOs and university professors, the most Peace Corps volunteers, and the most productive and long-running patents isn't Stanford or MIT—it's the University of Wisconsin.
— Vivek Wadhwa, "Who Needs the Ivies?" BusinessWeek, August 31, 2007

HTCondor Support:

See this page for information about support for HTCondor. Free support on a best-effort basis is available from the HTCondor team at You could also check the condor-users mailing list where HTCondor users can discuss HTCondor and offer assistance to each other. You can also purchase contracted support for HTCondor.


Alan De Smet Systems Programmer Center for High Throughput Computing / HTCondor
University of Wisconsin-Madison
Department of Computer Sciences
Room 4247 Computer Science
1210 W. Dayton
Madison, WI 53706-1685
United States

Contact Information:

This contact information is solely for contacting me about my work on the HTCondor or with the Center for High Throughput Computing.



Map of area

My office is in the Computer Sciences building, building 29 in the map above (it's circled and an arrow points to it).



XKCD Comic:
[[A man finds a computer tower with a wire leading away from it.]]
Man: What's this?
Off-screen: The Cloud.

[[The man looks behind him. The wire leads to an outlet in the wall next to where the Hat Man sits at a desk with a computer. Another wire leads from that outlet to the Hat Man's computer.]]
Man: Huh? I always thought "The Cloud" was a huge, amorphous network of servers somewhere.
Hat Man: Yeah, but everyone buys server time from everyone else. In the end, they're all getting it here.

[[A close-up of Hat Man.]]
Man (off-screen): How? You're on a cable modem.
Hat Man: There's a lot of caching.

[[A close-up of the man, looking down at the tower at his feet.]]
Man: Should the cord be stretched across the room like this?
Hat Man (off-screen): Of course. It has to reach the server, and the server is over there.

[[The man turns back to the Hat Man, still sitting at the computer.]]
Man: What if someone trips on it?
Hat Man: Who would want to do that? It sounds unpleasant.
Man: Uh. Sometimes people do stuff by accident.
Hat Man: I don't think I know anybody like that.

{{Title text: There's planned downtime every night when we turn on the
Roomba and it runs over the cord.}}

Randall Munroe, xkcd #908, "The Cloud", reproduced under a CC-BY-NC-2.5 license