[petsc-users] Adapting MatMult and PCMG functions in matrix-free method.

[Abdul Hanan Sheikh]

Dear developers and users,
Summer greetings.
We have few question listen below: 

1. 

The first question is about adapting " MatMult " function in matrix-free method.
We intend to incorporate a KSP context inside "MatMult" . The immediate question is how to
provide more than one matrices as input. 
Is this idea of incorporating a KSP context inside "MatMult" function workable ? Does it make any confrontation 

with philosophy of development of Petsc. ? 


2. 

An other advance level feedback is needed. 

 Re-implementing PCMG function {mg.c } will lead any violation of philosophy of Petsc-development ??


3. 

Which one of the above both is more elegant and feasible to work on ? 



Thanking in anticipation, 
Abdul 
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