//default of gpu ussage for individual phases is 1. However, it is only evaluated, if GPU is used at all, which first has to be determined
//by the parameter gpu and presence of the device
INT_ENTRY("gpu_tridiag","Use GPU acceleration for ELPA1 tridiagonalization",1,ELPA_AUTOTUNE_NOT_TUNABLE,ELPA_AUTOTUNE_DOMAIN_ANY,
cardinality_bool,enumerate_identity,NULL,NULL),
INT_ENTRY("gpu_solve_tridi","Use GPU acceleration for ELPA solve tridi",1,ELPA_AUTOTUNE_NOT_TUNABLE,ELPA_AUTOTUNE_DOMAIN_ANY,
cardinality_bool,enumerate_identity,NULL,NULL),
INT_ENTRY("gpu_trans_ev","Use GPU acceleration for ELPA1 trans ev",1,ELPA_AUTOTUNE_NOT_TUNABLE,ELPA_AUTOTUNE_DOMAIN_ANY,
cardinality_bool,enumerate_identity,NULL,NULL),
INT_ENTRY("real_kernel","Real kernel to use if 'solver' is set to ELPA_SOLVER_2STAGE",ELPA_2STAGE_REAL_DEFAULT,ELPA_AUTOTUNE_FAST,ELPA_AUTOTUNE_DOMAIN_REAL, \