BARALG
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Description
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This control determines which barrier algorithm is used to solve the problem. Notably, this is also the control to enable the primal-dual hybrid gradient algorithm.
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Type
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Integer
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Topic areas
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Values
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Default value
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-1
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Note
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The automatic setting uses 1 for LP and QP problems and 3 for QCQP problems. Usually the detection of primal or dual infeasibility is more robust with settings 2 or 3, therefore, it is advantageous to use one of these values if the model is presumably infeasible. Setting 4, the hybrid gradient algorithm, is suitable for very large or very degenerate problems.
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Affects routines
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XPRSlpoptimize (
LPOPTIMIZE),
XPRSmipoptimize (
MIPOPTIMIZE),
XPRSminim (
MINIM),
XPRSmaxim (
MAXIM).
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Category
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Control
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