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Eigensystem::nofeast Eigenvalues::nofeast Eigenvectors::nofeast

Details

  • This message is issued if a specific method is chosen that is not available on a particular hardware platform.
  • On a Mac computer with Apple silicon, a missing "FEAST" solver can be rectified by running the Wolfram System under Rosetta.
  • Off[message] switches off the message; On[message] switches it on. For example: Off[Eigensystem::nofeast].

Examples

Basic Examples  (1)

Evaluating NDEigensystem with a "FEAST" method specification will give a message if the "FEAST" library is not available on that specific platform:

Wolfram Language code: NDEigensystem[{u''[x] + RealAbs[x] * u[x], DirichletCondition[u[x] == 0, True]}, u[x], {x, -8, 8}, 2, Method -> {"SpatialDiscretization" -> {"FiniteElement", {"MeshOptions" -> {"MaxCellMeasure" -> 0.05}}}, "Eigensystem" -> {"FEAST", "Interval" -> {5, 6}}}]