Settings

These settings control how SCS behaves during a solve. They are set in the ScsSettings struct.

Name	Type	Description	Permitted values	Default
normalize	scs_int	Whether to perform heuristic data rescaling. See Data equilibration.	True/False	1
scale	scs_float	Initial dual scale factor, updated if adaptive_scale is True. See Non-identity DR Scaling.	\((0, \infty)\)	0.1
adaptive_scale	scs_int	Whether to heuristically adapt dual scale through the solve. See Non-identity DR Scaling.	True/False	1
rho_x	scs_float	Primal scale factor. See Non-identity DR Scaling.	\((0, \infty)\)	1e-6
max_iters	scs_int	Maximum number of iterations to run.	\(\mathbf{N}\)	1e5
eps_abs	scs_float	Absolute feasibility tolerance, see Termination criteria.	\((0, \infty)\)	1e-4
eps_rel	scs_float	Relative feasibility tolerance, see Termination criteria.	\((0, \infty)\)	1e-4
eps_infeas	scs_float	Infeasibility tolerance (primal and dual), see Certificate of infeasibility.	\((0, \infty)\)	1e-7
alpha	scs_float	Douglas-Rachford relaxation parameter. See Relaxation.	\((0, 2)\)	1.5
time_limit_secs	scs_float	Time limit for solve run in seconds (can be fractional). 0 is interpreted as no limit.	\([0, \infty)\)	0
verbose	scs_int	Whether to print solver output to stdout.	True/False	1
warm_start	scs_int	Set to True if you initialize the solver with a guess of the solution. See Caching the workspace and warm-starts. This is overridden by the argument passed to scs_solve.	True/False	0
acceleration_lookback	scs_int	How much memory to use for Anderson acceleration. More memory requires more time to compute but can give more reliable steps. 0 disables it. See Acceleration.	\(\mathbf{N}\)	10
acceleration_interval	scs_int	Run Anderson acceleration every acceleration_interval iterations. See Acceleration.	\(\mathbf{N}\)	10
write_data_filename	char *	If this is set the problem data is dumped to this filename.	Any filename	NULL
log_csv_filename	char *	If this is set SCS will write csv logs of various quantities through the solver (makes the solver much slower).	Any filename	NULL