Hey SolitudeSF thanks for the tip. Hey Miran, this is `Open Source Software` so you can modify it as much as you want. I think all you have to do is comment out the line that puts out the enter number message to get what you want.
But as I said in the initial post, people should feel free to beat on it, kick it, and modify it to their hearts content, especially if it `improves` it. Want a GUI frontend, go for it. Want to print output to a file, same thing. Here's one little `improvement` I've been thinking about that someone can pick up. It's fairly simple to conceptualize and easy to code, and would be a good task for someone to do to give them a reason to learn a little more Nim. `primesieve` displays a percentage indicator to give you a sense of how far along it's into the process. This is kinda nice to have, especially as number get larger. This is a nice, short task, of redeeming value, someone can take on. Here's one simple way to do it. Add to Global Var parameters a boolean array `threadsdone: seq[bool]` and initialize at end of `selectPG` as `threasdone = newSeq[bool](rescntp div 2)`. Then at the bottom of `twins_sieve` put `threadsdone[indx] = true`, to indicate the thread had finished. Now in the main routine, just monitor to see|calculate the percentage of the `(rescntp div 2)` threads are done in `threadsdone`. Voila, piece of cake. Just figure out how to display the output to give you what you want. Now that I'm able to compile the code for P17, I'm looking at the optimum PG profiles for inputs >= 1e13. 1e13 takes on the order of 900 secs (15 mins) and 5e13 is on order of 90 mins. Since I only have one laptop, and need it to do real work (this stuff is just for fun, fame, and fortune?) I tend to only run tests now either early when I wake up, or late going to bed. But the key point I hope this `real application` shows, is that Nim can do `real parallel processing` right now! And if Nim would publicize successes like this it could make headway into the numerical processing community (attracting more users|developers), and take mindshare away from Python, Julica, et al. People can start doing FFTs, Walsh Transforms, Video|Audio codecs. How nice it would be to have an Opus Audio codec in Nim to showcase Nim's processing prowess. [https://opus-codec.org](https://opus-codec.org)/ [https://en.wikipedia.org/wiki/Opus_(audio_format](https://en.wikipedia.org/wiki/Opus_\(audio_format)) The single most reason `Ruby` took off is `Rails`, which made people have to learn|develop Ruby. Python is now billing itself as THE numerical analysis language (and Julia in written in Python). Nim needs it niche applications to standout in the software language farmer's market. When people go looking for nice, fresh, juicy tomatoes to put in their salad, your offering must be able to stand out for some reason.
