Dynamic allocation of Non zeros?
z.sheng at ewi.tudelft.nl
Thu Nov 1 07:52:58 CDT 2007
It is always not easy to determine the number of nonzeros in a row
without any cost.
I wonder if I can make dynamic allocation, for instance, if one found
the nonzeros of a row overflow the pre-allocated space, then the space
shall be doubled.
This may waste some memory but it may not be that bad. Or maybe this is
already done in Petsc?
Could please tell what happens if I assign the nozero number in rows to
be zeros and let the programme fills in the nonzeros ?
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