[MITgcm-cvs] MITgcm/pkg/seaice CVS Commit

[Martin Losch]

Update of /u/gcmpack/MITgcm/pkg/seaice
In directory forge:/tmp/cvs-serv8005/pkg/seaice

Modified Files:
	seaice_lsr.F 
Log Message:
Make the subroutines seaice_lsr_tridiagu/v completely unreadable:
modify lsr-algorithm so that it vectorizes AND converges by using a
"zebra" method: split vector loop into two with step size 2; this
solves a general convergence problem for the JFNK solver on a vector
computer. It has the potential to even improve convergence for
non-vector machines, but it does change the results so it is turned
off by default. To turn on define CPP-flags SEAICE_VECTORIZE_LSR and
SEAICE_VECTORIZE_LSR_ZEBRA in SEAICE_OPTIONS.h