Little man program code multiplication software#

OK? So it's interesting, whether you're the producer or whatever. Then I talk with people who use computers, and I ask, what's your main complaint about the computing systems you use? Answer? Too slow. Oh, you do performance? Performance doesn't matter. OK? When I talk with people, with programmers, and I say- you know, people are fond of saying, ah, performance. And clearly if performance degrades too far, your stuff becomes unusable. OK?ДЄnd all those things come out of your performance budget. I'm willing to sacrifice some performance to make sure that my system is secure. So you'll say something like, gee, I want to make it easy to program, and so therefore I'm willing to sacrifice some performance to make something easy to program. OK? You use performance to buy these other properties. I think the answer to that is that performance is the currency of computing. Why do you study something that clearly isn't at the top of the list of what most people care about when they're developing software? So then, if programmers are so willing to sacrifice performance for these properties, why do we study performance? OK? So this is kind of a bit of a paradox and a bit of a puzzle. I made a short list of all the kinds of things that are more important than performance. And I think that you folks could probably make a pretty long list. OK? What are some of the things that are more important than performance? Yeah?Д¬HARLES LEISERSON: Extensibility. And so this is kind of interesting, because it turns out that performance is usually not at the top of what people are interested in when they're building software.

Little man program code multiplication software#

So the whole term, we're going to do software performance engineering. So let's just dive right in, OK? So the first thing to always understand whenever you're doing something is a perspective on what matters in what you're doing. I put the administration in the middle, because it's like, if from me telling you about the course you don't want to do the course, then it's like, why should you listen to the administration, right? It's like. I want to start today by talking a little bit about why we do performance engineering, and then I'll do a little bit of administration, and then sort of dive into sort of a case study that will give you a good sense of some of the things that we're going to do during the term. If you don't know it, you are in Performance Engineering of Software Systems, so if you found yourself in the wrong place, now's the time to exit. We're both in EECS and in CSAIL on the 7th floor of the Gates Building. My name is Charles Leiserson, and I am one of the two lecturers this term. To make a donation or to view additional materials from hundreds of MIT courses, visit MIT OpenCourseWare at .Д¬HARLES LEISERSON: So welcome to 6.172. Your support will help MIT OpenCourseWare continue to offer high-quality educational resources for free. The following content is provided under a Creative Commons license.