Mark Adams writes:
> I really think that it does not matter. Just as long as it is noisy. IMO,
> but we have no data, and I'm not sure how we could study it. What is the
> chance that your generator will generate a low frequency vector on some god
> knows what grid? I can not imaging this happ
>
>
> I agree that we should be using a random starting vector for spectral
> estimates. I'm not overly concerned whether it's a hash of the global
> ID or a deterministic seed, but let's use something that has been
> studied.
I really think that it does not matter. Just as long as it is noisy.
PR #360 (off master but maybe should be off maint) adds the executables in
src/benchmarks to .gitignore and fixes a couple of minor things noticed
while building them . I didn't build everything in streams/ , since I'm not
configured with OpenMP, etc.
On Fri, Aug 21, 2015 at 5:09 PM, Jed Brown wr
Barry Smith writes:
> Another alternative is to have inside the DMKSP a pointer to the
> "active" KSP (make it a void pointer so that there is no circular
> dependencies)
DMKSP is in the KSP package, so there is no problem with circular dependencies.
> and only use the DMKSP functions i
> On Aug 26, 2015, at 9:19 AM, Jed Brown wrote:
>
> Barry Smith writes:
>> This is a good idea. I've tried to implement it but run into a snag. With
>> PCMG the outer KSP and the pre and post smoother on the finest level all
>> share the same DM, but only the outer KSP should be using the c
Barry Smith writes:
>This is a good idea. I've tried to implement it but run into a snag. With
> PCMG the outer KSP and the pre and post smoother on the finest level all
> share the same DM, but only the outer KSP should be using the computerhs()
> and computematrix() methods. The dmActive
Mark Adams writes:
> I've not looked at it, and it would be hard to because it is not a well
> defined problem. But, if the initial guess is low frequency then it will
> give a poor estimate for the highest eigen value.
This is true.
> It is not clear to me what the relationship is, generally
