linear_solver{ }¶

Calling sequence

strain{ linear_solver{ } }

Properties

usage: \(\mathrm{\textcolor{Dandelion}{conditional}}\)
items: \(\mathrm{maximum\;1}\)

Dependencies

minimized_strain{ } must be defined.
This group is not allowed if any of no_strain{ }, pseudomorphic_strain{ }, and import_strain{ } is defined.

Functionality

—

Example

strain{
    minimized_strain{}
    linear_solver{}
}

Nested keywords

iterations¶

Calling sequence

strain{ linear_solver{ iterations } }

Properties

usage: \(\mathrm{\textcolor{ForestGreen}{optional\;within\;the\;group}}\)
type: \(\mathrm{integer}\)
values: {1, 2, 3, 4, ...}
default: 10000
unit: \(\mathrm{-}\)

Functionality

Number of iterations for linear equation solver in strain algorithm

Example

strain{
    minimized_strain{}
    linear_solver{
        iterations = 50000
    }
}

abs_accuracy¶

Calling sequence

strain{ linear_solver{ abs_accuracy } }

Properties

usage: \(\mathrm{\textcolor{ForestGreen}{optional\;within\;the\;group}}\)
type: \(\mathrm{real\;number}\)
values: [0.0, ...)
default: 1e-8
unit: \(\mathrm{GP\,}\) (1D) / \(\mathrm{GP\,nm\,}\) (2D) / \(\mathrm{GP\,nm^{2}\,}\) (3D)

Functionality

—

Example

strain{
    minimized_strain{}
    linear_solver{
        abs_accuracy = 1e-9
    }
}

rel_accuracy¶

Calling sequence

strain{ linear_solver{ rel_accuracy } }

Properties

usage: \(\mathrm{\textcolor{ForestGreen}{optional\;within\;the\;group}}\)
type: \(\mathrm{real\;number}\)
values: [0.0, 1e-2]
default: 1e-12
unit: \(\mathrm{-}\)

Functionality

—

Example

strain{
    minimized_strain{}
    linear_solver{
        rel_accuracy = 1e-10
    }
}

use_cscg¶

Calling sequence

strain{ linear_solver{ use_cscg } }

Properties

usage: \(\mathrm{\textcolor{ForestGreen}{optional\;within\;the\;group}}\)
type: \(\mathrm{choice}\)
choices: yes; no
default: no

Functionality

Composite step conjugate gradient solver (try this one if standard solver fails to converge)

Example

strain{
    minimized_strain{}
    linear_solver{
        use_cscg = yes
    }
}

force_diagonal_preconditioner¶

Calling sequence

strain{ linear_solver{ force_diagonal_preconditioner } }

Properties

usage: \(\mathrm{\textcolor{ForestGreen}{optional\;within\;the\;group}}\)
type: \(\mathrm{choice}\)
choices: yes; no
default: no

Functionality

—

Example

strain{
    minimized_strain{}
    linear_solver{
        force_diagonal_preconditioner = yes
    }
}