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About user defined PC

To: petsc-users@xxxxxxxxxxx
Subject: About user defined PC
From: jiaxun hou <jiaxun_hou@xxxxxxxxxxxx>
Date: Tue, 8 Aug 2006 17:48:48 +0800 (CST)
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Hi,

I met a problem ,when I constructed a user-defined PC. That is I need to defind the process of P^(-1)Mx in each iteration of GMRES by myself for efficient reason, not only define P^(-1)x . But the Petsc seems to separate this process into two parts: the first is y=Mx which is defined in Petsc framework, and the second is P^(-1)y which is defined by the user. So, is there any way to do it without change the code of Petsc framework?

Regards,

Jiaxun

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Follow-Ups:
- Re: About user defined PC
  - From: Barry Smith

References:
- Re: some problems in using PETSC with FFTW3 package
  - From: Satish Balay

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