Peformance degrading over time

[dmarce1]

I am not sure how to re-open an issue, but I am still having a problem with

#1753

Here is a plot:

http://s17.postimg.org/6h8qkbvn3/performance.png

This is with 64 nodes on SuperMIC

This is with a version of octotiger that doesn't rely on serialization of std::array, dmarce1/octotiger@7214efe

[zao]

I reopened the previous issue, turns out that if you're not a collaborator and the issue is closed by a collaborator, you cannot reopen it yourself.

[hkaiser]

Closing this as a duplicate of #1753