[petsc-users] -pc_asm_type none
Barry Smith
bsmith at mcs.anl.gov
Sat Nov 5 23:10:47 CDT 2016
> On Nov 5, 2016, at 9:35 PM, Fande Kong <fdkong.jd at gmail.com> wrote:
>
> Hi All,
>
> I know what "basic", "restrict" and "interpolate" represent, but have no idea about "none". Anybody knows what does mean when using "-pc_asm_type none"?
PC_ASM_NONE - Residuals from ghost points are not used, computed ghost values are
$ discarded.
$ Not very good.
In the P (A_subdomain)^-1 R both the R and the P skip values in the overlap region. Sort of the worst of restrict and interpolate.
>
> Regards,
>
> Fande Kong,
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