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Parallel conjugate gradient for poisson equations

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Old   November 9, 2009, 12:55
Default Parallel conjugate gradient for poisson equations
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Rahul Vaibhav
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Hi friends

I am working on implementation of conjugate gradient method specifically for sparse matrix, which arises after discretisation of Poisson equation. i implemented ILU0 preconditioner.
Now i am trying to parallelise the code using MPI command..
In current code needs to exchange information three times among various processor in each iteration of CG , which takes lots of time.
can anyone please suggest me some way to reduce number of data exchange per iterations.


Regards
RV
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Old   April 26, 2011, 05:11
Default i got it..
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Rahul Vaibhav
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i did it...
if anyone need the source code for CG,PCG, parallel CG and parallel PCG for solving poisson equation . please mail me rah00002004[at]gmail.com .
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