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MathGroup Archive 2007

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Options for a very large computation

  • To: mathgroup at smc.vnet.net
  • Subject: [mg77804] Options for a very large computation
  • From: "Bob D" <rdobrow at carleton.edu>
  • Date: Sun, 17 Jun 2007 06:04:53 -0400 (EDT)

I'm solving a 24-by-24 linear system symbolically. After
getting what I want using NullSpace, I get a very complicated
expression in 4 variables. When I try to Simplify the expression (before
viewing) my system dies. Either I run out of memory, or, when I
add TimeConstraints -> Infinity to the Simplify function, it takes
"forever" (nothing after 8 hours).

Two questions: (1) Any suggestions for how I can get more processing power, 
memory to do the calculations.

(2) I have access to more power, but the programs need to be written in
C++. Is there a way to convert the Mathematica code and the Simplify 
command, in particular,  to C++ and run it offline?

Thanks. 



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