[petsc-users] mixed precision methods with petsc

[LiRunhua]

I am curious about the mixed-precision capabilities in KSP. 

What’s the effects with the option --with-mix-precision=1 when running ./configure?

Does it like this? The mix-precision CG solve, as an example, is that using single precision for some earlier iterations for accelerating, and using double precision for the rest iterations to keep high precision results.



Is there any other information about mix-precision methods, or for re-development if needed?



Thanks,

Li Runhua
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