This commit includes the fraction of pore-volume whose CNV targets
are violated as a new per-iteration quantity in the INFOITER file
(--output-extra-convergence-info=iteration), with the column header
"CnvErrPvFrac". We collect the values which are already calculated
in
BlackoilModel<>::getReservoirConvergence()
and store these as a pair of numerator and denominator in the
ConvergenceReport class. Note that we need both the numerator and
the denominator in order to aggregate contributions from multiple
ranks.
While here, also make a few more objects 'const' and calculate
column widths directly instead of the maximum number of characters
in writeConvergenceHeader().
This makes them available for use in other places. The function
std::string to_string(const ConvergenceReport::WellFailure& wf) is new,
but uses the format already established.
This commit enables outputting non-linear convergence metrics, i.e.,
the MB and CNV values, per phase, for each non-linear iteration in
each timestep. If the user passes the option value "iterations" to
the --extra-convergence-output command line option, this commit will
create a new output file, CASE.INFOITER, that holds
* report step
* time step within that report step
* elapsed time
* MB and CNV values per phase
* well convergence status
for each non-linear iteration.
We use an asynchronous file writing procedure and confer ownership
of the report step's unprocessed convergence reports to this
procedure just before the end of
SimulatorFullyImplicitBlackoilEbos::runStep()
At that point, the convergence reports are about to go out of scope.
The asynchronous protocol uses a dedicated queue of output requests,
class ConvergenceReportQueue, into which the producer-i.e., member
function runStep()-inserts new convergence reports and from which
the output thread, ConvergenceOutputThread::writeASynchronous(),
retrieves those requests before writing the file data.
