Mon Nov 17 12:44:15 PST 2008

jsMath Now Available

An article in TUGBoat reminded me of the existence of jsMath, a way of including mathematics in webpages without having to translate the material to MathML or embed images.

In Your Webpages

You can now use jsMath in your webpages to include math. This method is especially useful for homework problems, examples, or other bits of mathematics that you might want to include in a page. (It might be especially useful for any thesis student websites where you want to display math in your abstract on the webpage!)

To use it, you need to add some code to your webpage to load the necessary JavaScript libraries and to tell jsMath what material it should try to typeset.

In the header of your document (i.e., inside the <head> tags), add the following line:

<script src="/jsMath/easy/load.js"></script>

The Getting Started page suggests that you also include code to warn users if they have JavaScript turned off in their browser.

Once you have the <script> tag in place, you should be able to type mathematics in your webpage's source code using the \( and \) delimiters for inline math, and the \[ and \] delimiters for display math.

I've left the default delimiters on for now; it's possible to use $...$ or $$...$$ as well, but those uses require you to escape (as in TeX) any dollar signs that might appear in your page. If you think we should change them, let me know, and we can try to get the department to agree.

More information about creating webpages with jsMath is available from the authoring manual.

Extra Bonus Feature: jsMath in Wikis

I have also installed a jsMath plugin for the MoinMoin wikis that we run. To use math in a wiki page, you should be able to start the page with

#format jsmath

and then type math in $...$ delimiters for inline math or $$...$$ delimiters for displayed math. (Yes, using the $$ is evil, but whatever.)

Posted by Claire Connelly | Permalink

Mon Nov 17 12:04:33 PST 2008

More on hex

I have pulled out the CPU expansion board from hex and sent it back to the vendor, who is going to try to get a replacement from the manufacturer. In the meantime, hex is running with eight cores (four CPUs) and 16 GB of RAM, and it seems to be stable.

Please let me know about any problems, and check back here for updates.

Posted by Claire Connelly | Permalink | Categories: News, System Maintenance, Amber

Tue Nov 4 11:26:01 PST 2008

Update on hex...

We've been having some issues with hex this year, which seem to be related to memory. Initially we leaned toward thinking we had a bad DIMM, but we weren't able to isolate the problem to a particular DIMM. So we swapped out all the RAM on the daughterboard (a huge circuit board that's only slightly smaller than the machine's motherboard and supports four processors and their RAM), and, well, we're still seeing the same issues.

So now suspicion falls on the daughterboard. The vendor is checking to see if we can get a replacement.

So hex is still running with less than its full complement of memory, although it now has 24 GB active.

Stay tuned for more....

Posted by Claire Connelly | Permalink