Commit 7f64e027 by mattijs

### Changed comment in header

parent c9033fc3
 ... ... @@ -22,40 +22,87 @@ License along with OpenFOAM; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA Default strategy: Strat=b { job=t, map=t, poli=S, sep= ( m From scotch forum: By: Francois PELLEGRINI RE: Graph mapping 'strategy' string [ reply ] 2008-08-22 10:09 Strategy handling in Scotch is a bit tricky. In order not to be confused, you must have a clear view of how they are built. Here are some rules: 1- Strategies are made up of "methods" which are combined by means of "operators". 2- A method is of the form "m{param=value,param=value,...}", where "m" is a single character (this is your first error: "f" is a method name, not a parameter name). 3- There exist different sort of strategies : bipartitioning strategies, mapping strategies, ordering strategies, which cannot be mixed. For instance, you cannot build a bipartitioning strategy and feed it to a mapping method (this is your second error). To use the "mapCompute" routine, you must create a mapping strategy, not a bipartitioning one, and so use stratGraphMap() and not stratGraphBipart(). Your mapping strategy should however be based on the "recursive bipartitioning" method ("b"). For instance, a simple (and hence not very efficient) mapping strategy can be : "b{sep=f}" which computes mappings with the recursive bipartitioning method "b", this latter using the Fiduccia-Mattheyses method "f" to compute its separators. If you want an exact partition (see your previous post), try "b{sep=fx}". However, these strategies are not the most efficient, as they do not make use of the multi-level framework. To use the multi-level framework, try for instance: "b{sep=m{vert=100,low=h,asc=f}x}" The current default mapping strategy in Scotch can be seen by using the "-vs" option of program gmap. It is, to date: b { job=t, map=t, poli=S, sep= ( m { asc=b { asc=b { bnd=d{pass=40,dif=1,rem=1}f{move=80,pass=-1,bal=0.005}, org=f{move=80,pass=-1,bal=0.005},width=3 }, low=h{pass=10}f{move=80,pass=-1,bal=0.0005}, type=h, vert=80, rat=0.8 } | m bnd=d{pass=40,dif=1,rem=1}f{move=80,pass=-1,bal=0.005}, org=f{move=80,pass=-1,bal=0.005}, width=3 }, low=h{pass=10}f{move=80,pass=-1,bal=0.0005}, type=h, vert=80, rat=0.8 } | m { asc=b { asc=b { bnd=d{pass=40,dif=1,rem=1}f{move=80,pass=-1,bal=0.005}, org=f{move=80,pass=-1,bal=0.005}, width=3}, low=h{pass=10}f{move=80,pass=-1,bal=0.0005}, type=h, vert=80, rat=0.8 } ) } bnd=d{pass=40,dif=1,rem=1}f{move=80,pass=-1,bal=0.005}, org=f{move=80,pass=-1,bal=0.005}, width=3 }, low=h{pass=10}f{move=80,pass=-1,bal=0.0005}, type=h, vert=80, rat=0.8 } ) } \*---------------------------------------------------------------------------*/ #include "scotchDecomp.H" ... ...
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