@mpope that it correct and its what I’m doing I believe. I don’t understand the part about trying this raw stdout access without flattening the binary though, could you elaborate further?
However, I made one small optimization from looking at your post and reading Concurrent Data Processing in Elixir by Svilen Gospodinov though, replacing handle_info with handle_continue, which should get rid of the self message passing.
@hauleth you’re the man! The port approach in your program above works as good as directly writing to /dev/stdout and I’m getting speeds in range of 490 - 520 MiB/s on average. Now, to answer your questions:
What is the reason for having separate process for printing?
The separate processes are for improving computation speed, printing from them is just a necessity. My approach too, was to reduce message passing as much as possible, and print the results in order. So, I’m spinning up several Genservers and dividing the work between them. The genservers hold their results till I send them print command (in order) to print their computed results. Earlier, I was using Tasks for doing the computations and then sending back the results to main process and then printing them in order, but that was unnecessary message passing, since tasks return results to the caller, which we’re then sending to IO.
I couldn’t run your code, it would be handy to have it as a gist or repo somewhere so it would be easier to test against it
Here you go: technusm1/fizzbuzz (github.com). I’m sorry I didn’t post this until now, probably because I’m unashamedly violating almost every good version control and software design practices for this program.
On that note, I also have a bit outdated writeup of all the things I did for Fizzbuzz on my blog: Fizz Buzz Pro on Elixir | Maheep's Webspace
Lastly, I also benchmarked your code and I’m getting speeds around 350-420 MiB/s. Like you said, its fast enough, and simple enough too. But it does print out of order (printing in order is a hard requirement). Nonetheless, I learned a lot from it and I’m keeping it.
Thanks!
