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Programming Parallel Computers: Part 1A
Welcome everyone to the “Programming Parallel Computers” course! In this course, our main goal is to learn to write code that runs very fast on modern computers. And, as we will see soon, basically the only way to get there is to write code in which lots of things are happening simultaneously in parallel. In this course, we are going to see how efficient use of all parallel computing resources on a modern CPU can lead to a performance improvement of a factor as high as 150.
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Programming Parallel Computers: Part 1B
Let’s now have a quick look at our course practicalities. First of all, I’d like to remind all of you that this is a 6-week course that is worth 5 credits. Which basically means that you are going to be spending roughly 22 hours each week on activities that are related to this course. So this is basically going to be a half-time job for all of you.
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Programming Parallel Computers: Part 1C
Let us now introduce a simple computational problem that we are going to use as a running example throughout this course. In this problem, we are given n points; here, in this example, n = 3. And we are given for each pair of points the cost of traveling from A to B. For instance, here, in this example, the cost of traveling from point 0 to point 1 is 8.
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Programming Parallel Computers: Part 1D
In the previous part, we eliminated one memory bottleneck from our program. Now, as we can see from these benchmarks, the program is equally fast regardless of the input size. Or, should we say, it’s equally slow. Even if the input is small enough so that everything fits in the cache memory, we are only achieving roughly 2 billion operations per second. And the reason for this relatively slow performance is that all of these minimum operations that we have in the innermost loop of the program happen in a strictly sequential order.
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Pull Requests in Azure DevOps
On today’s Visual Studio Toolbox, Brian Randell shows us how to do pull requests in Azure DevOps. [MUSIC] >> Hi. Welcome to Visual Studio Toolbox. I’m your host, Robert Green, broadcasting from the cozy confines of my home office, and joining me today is Brian Randell. Hey, Brian. How are you? >> I’m great, Robert. How are you doing, buddy? >> Good. This adds new meaning to the cozy confines.
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Witnet Sprint Review #35 + DEMOS (Apr 3rd 2020)
This is Witnet Sprint Review for sprint #35 The goals for this sprint were: completing the protocol — basically the last big feature that was missing, which was “collaterals”; In Sheikah, completing the claiming process for the people that have the right to have tokens assigned in the token generation event of Witnet; for them to claim their tokens; And in the smart contracts, finishing the bridging contracts and freezing all that codebase.
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Who is Responsible for This Calamity? Corona Pandemic 🙏 With Sadhguru in Challenging Times - 09 Apr
Sadhguru: Namaskaram to everyone. The, the nature of life is such, in the same package, that we think is me, life and death packed in the same package.
09:10 - Not separately, same package. Love and hate, people can hold in the same heart.
09:18 - At the same time, they can love one person and hate another person.
09:27 - Turmoil and tranquility, also held in the same package.
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Is japan bottles recycled material the best in the world ?
Recycling plastic is just the same as painting. Mixing white with some black will transform everything in gray. In Europe, the quality of recycled material from PET bottles is poor. One of the reasons is the color contamination that gives recycled products a yellowish appearance. In Japan beverage manufacturers all agreed to produce only transparent, clear PET bottles, called Crystal.
00:38 - None of the Japanese brands sell green, red or blue bottle.
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Collabra: Psychology intro by Simine Vazire
Hi! Welcome to this video on what Collabra:Psychology is all about. I’m Simine Vazire, the editor-in-chief of Collabra:Psychology. This video will explain the core values and policies of Collabra. We do things a bit differently here than what you might be used to and we want to make sure that everyone in the Collabra community - authors reviewers editors and readers - knows what our core principles are.
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Micro scavengers - HABITANTES DEL MICROMUNDO
Carcases of dead animals living in ponds and lakes disappear. It is possible thanks to the restless activity of tiny living beings that find in these carcases its main food. They are, mainly, ciliates as Coleps or Trachelius, which, sometimes, congregate in high number around the carrions in the same way that vultures or hyaenas made in the macro world. .