On Sat, 14 Sep 2013, Artur T. wrote:
I just had an idea. As I am not a programmer, I do not know how
tricky/difficult such things are to program. But if one could implement
a multicore support for the join function, more than one variable could
be read in simultaneously which speeds up the process.
Worth thinking about, but paralellizing join would be quite
complicated.
In the meantime, I think that you should find that the speed
improvement for join in current CSV is very substantial and makes it
feasible to use join in a loop for multiple series (even with big
data) without taking forever.
Allin