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   Python – parallelizing CPU-bound tasks with multiprocessing

In a previous post on Python threads, I briefly mentioned that threads are unsuitable for CPU-bound tasks, and multiprocessing should be used instead. Here I want to demonstrate this with benchmark numbers, also showing that creating multiple processes in Python is just as simple as creating multiple threads.First, let’s pick a simple computation to use for the benchmarking. I don’t want it to be completely artificial, so I’ll use a dumbed-down version of factorization – breaking a number to its prime factors. Here is a very naive and un-optimized function that take...

3,747 0       PYTHON MULTITASKING MULTIPROCESSING CPU BOUND


  How multitasking really works on Android and iOS

As the horsepower packed into mobile devices gets ever greater, more full-featured forms of multitasking are possible. The market leaders have very different ways of going about things, and there are numerous misconceptions about what is going on behind the scenes. This isn’t all the fault of the user, though. In the interest of ease of use, sometimes the multitasking metaphor is overly simplified on both Android and iOS. iOS: It’s more complicated than it looksEver since iOS 4, Apple’s platform has had a limited form of multitasking accessed with a double tap of the home ...

3,582 0       ANDROID IOS MULTITASKING TASK BAR


  If Multitasking Is Impossible, Why Are Some People So Good at It?

"Multitasking means screwing up several things at once," somebody once said, wrongly. In fact, we don't do many things at once, ever. We do many things in quick succession. And some of us are very good at it.Nagy-Bagoly Arpad/ShutterstockEverybody multitasks. We have conversations while driving. We answer email while browsing the Web. It's hard to imagine living any other way. What would be the alternative, removing the seats from your car to ensure you only drive alone? Block every website not named Gmail? A world of constant single-tasking is too absurd to contemplate.But science suggests th...

2,517 0       PROGRAM MULTITASKING HUMAN TASK SWITCH MYTH


  Multitasking vs multiprogramming

As all these processing are the part of computer functions. You should not be confused between these processes.In computing, multitasking is a method by which multiple tasks are performed by the user also known as processes, share common processing resources such as a CPU. CPU is actively executing more than one task at a time. Multitasking solves the problem by scheduling the tasks instructions. Which task may be the one running at any given time, when another waiting task gets a turn. These requests are managed by reassigning a CPU ...

26,027 0       MULTITASKING MULTIPROGRAMMING OS DIFFERE