5.1.3 iparm(_JT_ out_) - output mode

• Current index: 3
• Intent: In
• Default: _JT_ out_ warnings_
• Values:

  Variable	Meaning	Value
  _JT_ out_ none_	no output	0
  _JT_ out_ errors_	write out error messages only	1
  _JT_ out_ warnings_	write out error and warning messages	2
  _JT_ out_ summary_	same as _JT_ out_ warnings_, plus write a one-line summary consisting of the iteration number, the norms of the calculated residual and error estimate, and the norms of the true residual and error estimate (if calculated) each time convergence is checked	3
  _JT_ out_ system_	same as _JT_ out_ summary_, plus write out the coefficient, preconditioner (if there is one), source, initial guess and converged solution	4
  _JT_ out_ iterates_	same as _JT_ out_ system_, plus write out the current iterate and true residual (if computed) at each iteration	5
  _JT_ out_ full_	same as _JT_ out_ iterates_, plus write out vectors at each stage of the iteration, details about the preconditioner if available, etc. (WARNING: this generates reams of output)	6