Dear members, please feel free to ignore this mail if you feel that it is not about Base R. I have the following web scraping code ( i have 500 stocks to iterate over): getFirmsDates <- function() { rD <- RsDriver(browser="chrome") remDr <- rD$client { scrape for stock i } } Will the following code work? DATES <- mclapply(1:500, getFirmsDates, mc.cores = 48) Basically, there must be 500 chrome instances and rD and remDr are same for all iterations. If not any suggestions on how to accomplish the task? I am using RSelenium and rvest packages. THanking you, yours sincerely, AKSHAY M KULKARNI [[alternative HTML version deleted]]