Parallel computing

Caching, big concept that can have big impact on your code.

Parallelization, concept that can have big impact on your code.

So these are the kinds of things that I don't want people to become complacent, to say that everything's gonna get handled for you.

The machines are getting smarter, so I, I can envision a world in which we just mo- basically move higher and higher up the food chain in terms of what we need to worry about.

Right.

And if Java didn't figure out a way to easily handle parallel processing across all those idle cores, it was gonna wither away like COBOL, or it would just get completely replaced by newer, sleeker competitors running on the Java virtual machine, languages like Scala.

Which was a very real threat at the time.

So what does this all mean? How does a physical hardware problem actually translate into a software coding problem?

Your program just freezes.

So to solve this multi-core hardware problem, the language designers realized they had to completely rethink how we pass instructions around.

They needed to make parallel processing safe by default.

Okay, so if hard coding every single thread interaction is out, how do we actually pass instructions safely? I guess developers first needed a way to write incredibly flexible code, right?

However, uh, compared to tape, uh, the advantage are so big and, uh, the speed, uh, uh, delta, it's, uh, not, uh, such a big, uh, uh, yeah, it's not a showstopper for the application related to data storage.

Parallelization also, both of the synthesis and the sequencing, very much help in, uh, in actually leveraging out the difference, the potential difference between tape and DNA storage.

And another important information, which is more of a detail if you want, but in the moment in which you read a, a movie, for example, that you have stored, at the same time you can generate hundreds of copy of this movie back.

So, uh, not only you will never lose the information, but, uh, actually in the moment [laughs] in which you read it, you can generate also more copy and store it back, uh, in a, in a safe environment for the next thousand of years.