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Breathing circle
Posted in internet, random
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Bandwidth test (Feb. 2012 edition)
It’s that time of year again: Speed test
testing home -> Comcast server in MPLS
Ping: 29 ms
Down: 33.74 Mbps
Up: 4.21 Mbps
This is significantly higher than the previous test to servers in Chicago at speakeasy speed test.
Posted in computers, internet, technical
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UW-Stout Sage server
I’ve setup, and begun testing on a “large scale”, a virtual machine running the Sage notebook server for use by students, faculty, and staff at UW-Stout. You can try it out if you like, here is the address:
Anyone can create an account (for now) and run Sage / Python / GAP / Maxima / etc. code through the browser. I’m testing the server in two classes this semester (Calculus & Analytic Geometry I and Modern Algebra I). I’m also trying to get other faculty into the game by leading an active learning type workshop on converting Maple projects to Sage. Here is the first demo of that:
https://sage.uwstout.edu:8000/home/pub/9/
Details: The Sage notebook server is running on brand new hardware, an HP server with 12 cores (24 threads) and 144 GB main memory. We’ve put Debian squeeze and Xen on it and we’re running several virtual machines: three different VMs for WebWork and one for Sage. So far the system is performing great.
Bandwidth test (Aug. 2011)
It’s that time of year again for the annual bandwidth test. This edition is brought to you from Charter in Menomonie, WI.
Download Speed: 24180 kbps (3022.5 KB/sec transfer rate)
Upload Speed: 2138 kbps (267.3 KB/sec transfer rate)
Posted in computers, internet, technical
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Exciting new developments in Sage
Sage as a general purpose web service is about to be unveiled at MathFest. Exciting news.. I was playing around with the beta version which runs on one of University of Washington’s Sage servers. The interface is really nice and it fast (for now!)
More generally, the Single Cell Server code developed by Jason Grout (and others) can be used for GAP, PARI/GP, Python, R, etc..
Can you guess what sequence this is?
1
2
3
2^2
5
2 * 3
7
2^3
3^2
2 * 5
11
2^2 * 3
13
2 * 7
3 * 5
2^4
17
2 * 3^2
19
2^2 * 5
3 * 7
2 * 11
23
2^3 * 3
5^2
2 * 13
3^3
2^2 * 7
29
2 * 3 * 5
31
2^5
3 * 11
2 * 17
5 * 7
2^2 * 3^2
37
2 * 19
3 * 13
2^3 * 5
41
2 * 3 * 7
43
2^2 * 11
3^2 * 5
2 * 23
47
2^4 * 3
7^2
2 * 5^2
3 * 17
2^2 * 13
53
2 * 3^3
5 * 11
2^3 * 7
3 * 19
2 * 29
59
2^2 * 3 * 5
61
2 * 31
3^2 * 7
2^6
Posted in computers, math, sage
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Downloading an entire wiki site for offline viewing
I’m flying tomorrow to NYC and need to study a vast wiki on the plane (and I’m too cheap to pay for airborn wifi). So I used this command to download a complete copy overnight (sorry for the bandwidth cost and server load!)
wget --mirror --convert-links --html-extension --no-parent -page-requisites URL
Thanks to this post for the idea.
Posted in computers, internet
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aka
I’m now on Google+, oh and on Twitter as BenjaminFJones.
Posted in internet, personal
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Google+
I’m scheming for a Google+ invite. I don’t know why. I hate facebook; I’ve left it and re-signed up several times. Google buzz was a flop (for me). What leads me to want an invite to Google+ ?
Posted in internet
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