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kuqcd_solve_multishift

Execute the inverter.

Interface Definition

KuQCDStatus kuqcd_solve_multishift(void **_hp_x, void *_hp_b, KuQCDInvertParam *param);

Parameters

Parameter	Type	Description	Input/Output
_hp_x	void **	Multi-shift solution data	Input/Output
_hp_b	void *	Source data	Input
param	KuQCDInvertParam *	Inverter configuration options. For details, see Table 1	Input

**Table 1** KuQCDInvertParam structure
Field	Type	Description
dslash_type	KuQCDDslashType	Dirac operator type. The options are as follows: KUQCD_WILSON_DIRAC (not supported currently) KUQCD_WILSONPC_DIRAC (not supported currently) KUQCD_HISQ_DIRAC KUQCD_HISQPC_DIRAC
inverter_type	KuQCDInverterType	Inverter type. The options are as follows: KUQCD_CG (not supported currently) KUQCD_CGM KUQCD_BICGSTAB (not supported currently) KUQCD_BICGSTABM (not supported currently)
matpc_type	KuQCDMatPCType	Preconditioner type. The options are as follows: KUQCD_EVEN_EVEN KUQCD_ODD_ODD
prec	KuQCDPrecision	Precision, which must be the same as the value of KuQCDGaugeParam. The options are as follows: KUQCD_HALF (not supported currently) KUQCD_SINGLE KUQCD_DOUBLE
iter	int	Number of iterations. After the inversion is complete, you can read this value to obtain the number of inverter iterations.
num_shift	int	Number of shifts
max_iter	int	Maximum iterations
tol	double	Converged precision
shifts	double *	Shift array

Parent topic: Function Definition