NDSolve::stps
NDSolveValue::stps
ParametricNDSolve::stps
ParametricNDSolveValue::stps
A warning message is generated because the input includes values for both the StartingStepSize and StartingPoints options:
NDSolve[{D[u[x, t], t] == D[u[x, t], x, x], u[x, 0] == Exp[-100 x ^ 2], u[-1, t] == u[1, t]}, u, {x, -1, 1}, {t, 2}, Method -> {"MethodOfLines", "SpatialDiscretization" -> {"TensorProductGrid", StartingStepSize -> 1, StartingPoints -> 1200}}]