On Wed, 5 Nov 2008, Kirk, Benjamin (JSC-EG) wrote:
Could the api allow you to specify the indices from user-space? The
reason I ask is because if all your variables are the same type it
is pretty easy to figure out the range from the first_local_index,
last_local_index, n_vars, and var_num.
That's a little hackish to do inside the library...
A *little* hackish? No, requiring the command line option
"--node_major_dofs" to use that coefficient numbering, that was a
little hackish. *Breaking* that option (as well as Taylor-Hood
elements, etc.) would be a *lot* hackish. ;-)
But as an optimization which could fall back on my more general code,
it's a very good idea. Use NumericVector::subrange_norm() only if
we're using var-major numbering, and have the DofMap cache the
first_local_index_var[n] for each variable so we get the range limits
right even if there's differing FE types in use.
---
Roy
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