[petsc-users] KSP Solver Initial Non Zero Guess

[Anthony Vergottis]

Dear All,

If I am solving a linear system uses the KSP solver context i.e. *ierr =
KSPSolve(ksp,RHS,**Solution**);* and I require an non zero initial guess
for the system is it sufficient to call *ierr =
KSPSetInitialGuessNonzero(ksp,nonzeroguess);* and supply the vector
*Solution* with the values I require? will the initial non zero guess be
taken as the values I specified in the vector *Solution*? or is there
something else that must be done to achieve this?

Just need to make sure of this. Thanks in advance for any help.

Regards,
Anthony
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