Random access on a huge file in haskell

Question

What is the best way to read a huge file (around 1 TB) in haskell. Basically the file contains a matrix of integer data. and I may need to (efficiently ) calculate the correlation between the different rows or between columns.

I have previously used pytables for this but was thinking of trying the same in haskell. I know haskell has some hdf5 bindings but is there any other options which I am not aware of ?

Answer 1

As in any other language: you seek (using System.IO.hSeek), and then use binary IO (Data.ByteString.hGet). Then you parse the result (e.g. using attoparsec) and process as needed.