字幕列表 影片播放 列印英文字幕 Hi My name is Ethan Waldie And this is our November 4th update video I am going to tell you a little bit of how far we gone in the past 4 months So what you can see behind me is all 33 of our computers running We do 64 RasberryPis But due to the lack of sufficient power And we are working on our current power supply And then we will be able to step it up to 64 nodes So essentially what we have been focusing on is How to scale this problem up Because you run into a lot of networking and technical issues Especially when you start getting more and more Raspberry Pis And we had to find a lot of different ways to servicing the software on the Raspberry Pis So I know that we run a PSSH which is a Parallel SSH client Which allows us to SSH all the Raspberry Pis at once especially when you want to something like power off by software Because hard powering off the Raspberry Pi can sometime lead to corrupted operating systems Which is obviously a pain Another thing we are working on is the network We reorganized the network from a DHCP to a Static IP network This makes the system more manageable especially when the Cisco router (up here) wasn't behaving like it the way supposed to be As well we also have been working on our GalaxSEE Which simulates essentially galaxies in space And how it works is just like this I have a thousands stars in my galaxy and I place them in random positions in my Matrix and What I used is Newton's law of gravitations to calculate the force in between every single particle For Example 40 thousand particles I have about 40 thousand forces to calculate And What I do is run the simulation over multiple time steps Say I Run it over a thousand years And when I run it over a thousand years You can watch the simulation in real time on the monitor behind me and This gives you a really good sense of how the super computer "Does" You can also use the switches to watch the communication in real time And because the switches have so many lights on them You can actually watch between different integral methods So different methods that integrate the program between the multiple computers How the communication shifts from a direct communication to a Barnes-Hutch Kind of simulation or a PPM distribution simulation
B1 中級 快速更新#1 - 樹莓派超級計算機 (Quick Update #1 - Raspberry Pi Supercomputer) 118 11 建黃 發佈於 2021 年 01 月 14 日 更多分享 分享 收藏 回報 影片單字