Actual source code: gmpre.c

petsc-master 2019-09-22
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  2:  #include <../src/ksp/ksp/impls/gmres/gmresimpl.h>

  4: /*@
  5:     KSPGMRESSetPreAllocateVectors - Causes GMRES and FGMRES to preallocate all its
  6:     needed work vectors at initial setup rather than the default, which
  7:     is to allocate them in chunks when needed.

  9:     Logically Collective on ksp

 11:     Input Parameter:
 12: .   ksp   - iterative context obtained from KSPCreate

 14:     Options Database Key:
 15: .   -ksp_gmres_preallocate - Activates KSPGmresSetPreAllocateVectors()

 17:     Level: intermediate

 19: .seealso: KSPGMRESSetRestart(), KSPGMRESSetOrthogonalization(), KSPGMRESGetOrthogonalization()
 20: @*/
 21: PetscErrorCode  KSPGMRESSetPreAllocateVectors(KSP ksp)
 22: {

 26:   PetscTryMethod(ksp,"KSPGMRESSetPreAllocateVectors_C",(KSP),(ksp));
 27:   return(0);
 28: }