On Fri, 8 May 2015, Jed Brown wrote: > Ganesh Vijayakumar <ganesh.i...@gmail.com> writes: > > > Hello, > > > > Is there any way I can get MatSetValue to run faster if I can guarantee > > that the entries are local to that processor? > > Use MatSetValuesBlocked if relevant. Determining on/off process is not > a bottleneck. Profile carefully before assuming where the time is > spent.
The assembly will be most efficient if: 1. preallocation is done correctly 2. most/all entries are local 3. If you can insert values in blocks [and if the block has multiple colum values - then the col indices are in sorted accending order] Satish
