Parallel Cholesky solve

Barry Smith bsmith at
Wed Oct 28 15:53:49 CDT 2009

On Oct 28, 2009, at 1:41 PM, VASIA KALAVRI wrote:

> Thanks for the immediate response.
> The thing is when I use MATMPISBAIJ format I get the message: "Lower  
> triangular value cannot be set for sbaij format"
> but I want to set these values.

    The SBAIJ interface only accepts the diagonal and upper diagonal  
entries. If you are computing the lower triangular entries (and not  
the upper) you can simply pass the columns as rows and the rows as  
columns. If you are providing both the lower and upper triangular you  
can either (1) do as Hong says and have it ignore the lower or (2)  
never set the lower.


> Vasia.
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