Rowmap { a Row-code with Krylov Techniques for Large Stii Odes
نویسندگان
چکیده
We present a Krylov-W-code ROWMAP for the integration of stii initial value problems. It is based on the ROW-methods of the code ROS4 of Hairer and Wanner and uses Krylov techniques for the solution of linear systems. A special multiple Arnoldi process ensures order p = 4 already for fairly low dimensions of the Krylov subspaces independently of the dimension of the diierential equations. Numerical tests and comparisons with the multistep code VODPK illustrate the eeciency of ROWMAP for large stii systems. Furthermore, the application to nonautonomous systems is discussed in more detail.
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