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ptc-31723921-Visitor
1-Visitor
March 16, 2010
Question

memory usage grows

  • March 16, 2010
  • 1 reply
  • 3274 views
I'm using Mathcad 14 on XP Pro. I can watch MathCad through task manager from launch-to-crash and the longer it runs the more memory it uses. This continues until all available memory is used up and then you get the error that says "not enough memory for this operation." When I launch the speradsheet I'm working on currently, Mathcad is using about 50Meg. Everytime I recalc the memory useage grows. After about 10 recalcs I'm up to 1.7Gig and by then usually I get the error message. Is it possible Mathcad is hanging on to all the numerical output of each calc for undos? I've lower undos to 20 and no difference. Thanks for any guidance here.

1 reply

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RichardJ19-Tanzanite
19-Tanzanite
March 16, 2010
Which version of 14, and are you using symbolic math in the worksheet? Richard
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ptc-31723921-VisitorAuthor
1-Visitor
March 16, 2010
The Mathcad version is 14.0.0.163 [build 701291152] I'm not using any of the symbolic functions. My spreadsheet is using the Runge-Kutta ODE solver rkfixed to solve a system of 10 state equations. The spreadsheet works fine but accumulates about the same amount of additional memory useage with each calc. It's like it's holding on to all of the data from previous calculations. Thanks
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RichardJ19-Tanzanite
19-Tanzanite
March 16, 2010
If you are only using 14.0 the first thing to do is download and install the latest service release. If you have a single user license that's M020. If you have an Enterprise license it's M035, but you should install M030 because M035 has a really bad memory leak. Richard
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