A question about VecSet

Fredrik Bengzon fredrik.bengzon at math.umu.se
Thu Feb 12 11:57:32 CST 2009


Hi,
I would like to know if I need to call VecGhostUpdateBegin\End on a 
vector with ghost nodes after a call to VecSet on the same vector, i.e.,

// Declare vector v with VecCreateGhost etc.

VecSet(v, 0.0); // Does this set also ghosted entries to zero ?

VecGhostUpdateBegin(v, INSERT_VALUES, SCATTER_FORWARD); // Is this 
necessary ?
VecGhostUpdateEnd   (v, INSERT_VALUES, SCATTER_FORWARD);

Sincerely,

Fredrik Bengzon


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