How to Bake Your Own Pi

Baking Your Own Pi

It’s 3/14, and that means it’s international Pi day! A day where we rejoice over the transcendental number that seems to be everywhere.

So, why am I writing about pi on the Iron.io blog? It turns out pi is the best (read: the absolute best!) way to test out computers. It’s sufficiently random, requires large amounts of memory, CPU, and is easy to check.

I first learned about this aspect of pi while reading the book Heres Looking at Euclid. There, I also learned that Pi beyond 40 digits or so isn’t all that useful. So, why do we know pi into the billions of digits? To quote the many time world record holder,

“I have no interest as a hobby for extending the known value of pi itself. I have a major interest for improving the performance of computation. [..] Mathematical constants like the square root of 2, e, and gamma are some of the candidates, but pi is the most effective.”

How To Make Pi

I’m on board! I want to make Pi, myself. If Pi is a great way to test any computer, why not use it to test first-class distributed computing solutions, like IronWorker?

Humans have known about Pi for a while. Which is part of what makes it a great computation. We have multiple recipes for baking the same dish. That means it’s easy to check our work (by comparing two algorithms).

So, what goes into pi? How can I cook this dish? Let’s check out a few of the best recipes. (more…)