INDAM DIM CWI

Test Set for IVP Solvers

release 2.2 picture by Tobias Baanders (art@cwi.nl)

Suggestions, questions, remarks?
testset@dm.uniba.it

Revision History

Release 2.2, August 2003:

  • Two more solvers (MEBDFI and GAMD) are supported.
  • Five well known stiff ODEs have been added: van der Pol, Robertson, Oregonator, E5 and Beam.
  • It is again possible to submit new test problems.
  • New work precision diagrams reporting CPU-times against the mescd (mixed error significant correct digits) have been generated for each problem (mescd is what actually the solvers supported by the Test Set try to control).
  • The reference solution has been recomputed for some problems.
  • All the tests have been run on an Alpha server DS20E, 667 MHz, and the related section, in the problems descriptions, has been updated.
  • ODE, DAE and IDE problems have been gathered into three different lists and link to separated pages reporting a short description, work precision diagrams and plots of the solutions.
  • A short description of each solver together with its related references, has been added in the descriptive part of the Test Set.
  • Some minor changes have been made in the report.

September 2001:

  • The Test Set moved from CWI to the University of Bari.

Release 2.1, September 1999:

  • The formulation of the Chemical Akzo Nobel problem has been improved. The problem is now an index 1 DAE instead of an ODE.
  • The DAE case with full Jacobian and banded mass matrix is now supported in the DASSL driver.
  • The plot of the solution components of the Ring Modulator problem is now correct.
  • A new problem, the Water Tube System, has been added.
  • Web server statistics have been added.
  • It is no longer possible to submit new test problems.
  • Some minor editorial changes have been made in problem descriptions.
The report of this release is still available as pdf file (1.9 MB).

Release 2.0, December 1998:

  • The drivers have been changed considerably. Now there is one generic driver per solver, which can handle all problems for which the solver is applicable.
  • A new problem, the Slider Crank, has been added.
  • Two more solvers (RADAU and MEBDFDAE) are supported.
  • The descriptions of the origin of the problems have been made more readable.
  • Quite some bugs have been corrected.
The report of this release is still available as pdf file (1.9 MB).

Release 1.0, August 1996:

The report of this release is still available as pdf file (1.0 MB).

testset
Last modified: Fri Nov 7 12:25:29 MET 2003