Anil Yildirim

See the branch [anilyil:zipper_fix ](https://github.com/anilyil/adflow/commits/zipper_fix) for the changes.

A pdf file detailing the efforts can be found here: [2019-03-12_zipper_debug.pdf](https://github.com/mdolab/adflow/files/2998743/2019-03-12_zipper_debug.pdf)

Not yet, I would say once we have complex ANK working (issue #55), we can tackle this bug again. From where we left off, we think the bug is mostly...

So last we left off is we think we fixed "a" bug that came up when there were multiple zipper meshes in a case, and I think Gaetan also understood...

@DavidAnderegg, I believe you need to disable blockettes if you want to use ANK or NK with an unsteady simulation with the following option: `'useblockettes':False,`. Also, I suggest adding this...

Thanks @joanibal, I think @Xiaosong2105 is also interested. I think all 3 of us should take a look at this and try to even improve it. Here is a brief...

I was confused, this is not an "algebraic multigrid" its an "agglomerated multigrid", hence the acronym AGMG. Algebraic Multigrid (AMG) is purely a mathematical approach applied on linear systems, where...

I would say at least in the config we use for the clusters we should try to include whatever optimizations are possible. The tests are not a great estimate of...

I did want to take a look at this. I can review within the next 2 days if there is no urgency. I wanted to review partly also because my...

Thanks for all the efforts towards fixing this. It seems like we only compute residual for the SA in the blockResCore: https://github.com/mdolab/adflow/blob/master/src/NKSolver/blockette.F90#L812-L815 this would explain the SST residuals being exactly...