name.iE

Program

HEIG

; program control IP KREST NROOT NITERX KTPR KEVP

; optional real parameters RP TOL

; end of input data EN EN

$\mathtt{KREST}$	The key of restart.
	$=1$	commence the computation, determine starting vectors automatically
	$=2$	commence the computation, read starting vectors from the binary file `name.EJG`
$\mathtt{NROOT}$	The number of requested eigenpairs (eigenvalues and corresponding eigenvectors).
$\mathtt{NITERX}$	The maximum number of iterations allowed. The default value is $12.$
$\mathtt{KTPR}$	The key of test prints.
	$=0$	none
	$=1$	information about eigenvalue iterations (recommended)
	$=2$	iteration method inputs
	$=3$	solution
	$=12$ $=13$ $=23$	combinations of abovementioned
$\mathtt{KEVP}$	The key of the generalized eigenproblem.
	$=0$	dynamics, the consistent mass matrices are read from the binary file `name.EMM`
	$=1$	stability, the initial stress matrices are read from the binary file `name.EMG`
$\mathtt{TOL}$	The convergence criterion. The default value is $10^{-6},$ often a much higher value suffices, e.g., $10^{-5}<\mathtt{TOL}<10^{-3}.$