cvode: Add linear_solver option#3112
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Selects the linear solver to be used by CVODE. Usually the default GMRES works well, but FGMRES can work better. Example: ``` [solver] linear_solver = fgmres ```
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| BOUT_ENUM_CLASS(positivity_constraint, none, positive, non_negative, negative, | ||
| non_positive); | ||
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| BOUT_ENUM_CLASS(linear_solver, gmres, fgmres, tfqmr, bcgs); |
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warning: enum 'linear_solver' uses a larger base type ('int', size: 4 bytes) than necessary for its value set, consider using 'std::uint8_t' (1 byte) as the base type to reduce its size [performance-enum-size]
BOUT_ENUM_CLASS(linear_solver, gmres, fgmres, tfqmr, bcgs);
^
ZedThree
approved these changes
May 22, 2025
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Selects the linear solver to be used by CVODE. Usually the default GMRES works well, but FGMRES can work better.
Example: