Does anyone know if the following code can be made to run in "parallel"

[michaelbgarcia]

I've seen you ask this question multiple times before. I believe my original answer to you addressed this, as (at least in terms of your first post) there is no need for a loop. You should be able to use data.table which runs parallel by default:

Making a Loop more Efficient

So you don't really need a loop here. I think you can get everything you want with normal vectorized operations. Pair that with the speed of data.table and you are golden. I see you wanted to use data.table, but the constant switching between classes renders it useless, except for that last dcast part. Here is a mostly pure data.table solution. Note, I am no data.table expert so am positive this could be optimized even further. I used a starting point of 1000 iterations, which completes in 2 seconds. library(data.table) library(tictoc) tic() # start timer # Change this for # of iterations num_iteration = 1000 set.seed(123) # create some data for this example a1 = rnorm(1000,100,10) b…