Dask tips

[dougiesquire]

I wonder if the use of dask is sufficiently complex that it warrants its own section? Using this issue to document lesser-known tools/hacks that could potentially be included:

• dask Active Memory Manager - I haven't actually tried to use this but I've heard it can be helpful

[paolap]

As dask, chunking etc are partially covered in the computations notebook, I wonder if the best approach would be to use that notebook as an introduction and then add sub-sections that go more deeply into:

• chunking
• dask
• time series etc.
  In a way it's the approach we seemed to have adopted but to avoid confusion to a user we should formalise it in a computations introduction. I can have a go at setting this up.

[paolap]

Just ignore my comment I see that this is also covered in #69