[sundials-users] Getting two set of solutions for IDA solver using SKSUNDAE

[Prashant]

Hello

I am trying to solve differential algebraic equations using IDA solver SKSUNDAE and getting two set of solution for the same. I have used following snippet to call the function.

solver = sun.ida.IDA(resfn, algebraic_idx=[7, 8, 16, 17, 25, 26], calc_initcond='yp0')

soln = solver.solve(teval, y0, yp0)

The first set of solution is correct but the next set is simply a straight line which shows there is no dynamics in the system.

Please help me resolve the issue.

Regards 

Prashant

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[Balos, Cody]

Hi Prashant,

 

I am unfamiliar with SKSUNDAE. It is not maintained by the SUNDIALS development team, so you might have better luck asking the SKSUNDAE developers this question through their support channels.

 

Regards,

Cody

 

 

Cody Balos Computational Scientist Lawrence Livermore National Laboratory bal...@llnl.gov 7000 East Avenue, Livermore, CA 94550 www.llnl.gov