Hi, In addition to simple a > 0 and b > 0 constraints at every point in th e 
domain, I need to apply an additional a + b  < 1 constraint over the domain. 
The first two , I understand are pretty easy to do using SNES_VI. To apply the 
third using the approach used in the reduced space approach, I'd need to modify 
the bounds function to have the linesearch direction available.The strategies 
that seem feasible to me are as follows:1. Program a solver using SNES Shell 
that does it. 2. Program a linesearch and use SNES Linesearch Shell to solve 
the problem with a standard SNES VI solver. 3. Modify SNES VI in a local 
installation.
To me. it seems that no.2 is the simplest approach. Are any other approaches 
feasible?Thanks, 
Subramanya                                        

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