Chronological Thread 

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Hi all,

Shane Blackett, Poul Nielsen, and I had a meeting today to discuss the
simulation metadata specifications.

The following is a summary of the meeting:

1) PCEnv, which is due to be released in the near future, will only
support boundIntervals (and properties on the bound interval target) and
simulationName, but will not support linearSolver, iterationMethod, or
multistepMethod, and so on.

2) tabulationStepSize does not belong in the specification, so it should
be removed. Software such as PCEnv should preferably not interpolate
onto a grid, but if it does, this should be defined elsewhere, and not
in the simulation metadata specification.

3) Most of the discussion related to the properties which specify the
solver to be used. Poul suggested that we may be able to use existing
algorithm ontologies, such as GAMS or CACM, to specify the solver. It
was noted that there are two types of classification, one of the type of
mathematical problem to be solved (e.g. terms like stiff and non-stiff),
and another describing the type of algorithm to solve the tree. I
suggested that the model author could provide an ordered set of terms
from either of the ontologies, and terms would be searched in order
until the software finds an algorithm matching a term. It was noted that
in this case, the model author and the software need to agree on at
least some of the terms for this to work (Poul suggested a restricted
dictionary). This topic needs further discussion.

Best regards,
Andrew Miller

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• [cellml-discussion] Summary of simulation metadata meeting, Andrew Miller, 08/22/2006
  • [cellml-discussion] Summary of simulation metadata meeting, David Nickerson, 08/22/2006
    • [cellml-discussion] Summary of simulation metadata meeting, Shane Blackett, 08/23/2006
      • [cellml-discussion] Summary of simulation metadata meeting, David Nickerson, 08/23/2006
        • [cellml-discussion] Summary of simulation metadata meeting, Shane Blackett, 08/23/2006
          • [cellml-discussion] Summary of simulation metadata meeting, David Nickerson, 08/23/2006
          • [cellml-discussion] Summary of simulation metadata meeting, Andrew Miller, 08/30/2006

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