首页 > IT资讯, 技术相关 > MIT Angstrom 项目(二)-设计自我感知的多核操作系统

MIT Angstrom 项目(二)-设计自我感知的多核操作系统

2011年2月26日 发表评论 阅读评论

前面那篇关于MIT Angstrom项目的多核互连的文章讲了从硬件上提高多核芯片的性能和效率。本文将继续介绍MIT的Angstrom项目,主要介绍其软件,及操作系统层面来提高多核计算机的性能。

在MIT新闻介绍中,他们准备利用机器学习(machine learning)等方法实现一个具有性能感知等自适应能力的操作系统,名字貌似叫FOS(factored operating system).为此,他们利用机器学习等方法建立了自我感知的计算模型(SElf-awarE Computational model,简称SEEC)。


  1. 第一个特征是具有性能感知能力,并且基于此进行对处理器核进行动态调度,比如对于一些比较占用资源的应用,操作系统可以感知(之前一般都是通过处理器核的温度反馈的?),并且动态的多分配几个内核(感觉这和Intel的睿频技术有点像,只是Intel的是硬件,并且是提高单个处理器核心的主频来提高性能)。
  2. 第二个具有算法感知能力,也就是说,程序员可以写几种算法实现同一个功能,由操作系统通过智能(通过机器学习等获得)判断何种算法效率最高,从而执行何种算法来完成任务,更多细节可看这里
  3. 第三个特征是具有任务感知并划分的能力,对于一个给定的任务,操作系统可以判断这个任务是否可分解,可以的话,将其分解成更细的任务,分配到不同的处理器核处理,典型的情况就是文件系统的检索。这篇新闻还提到定义一些新的指令集,来更高效的解决Cache一致性的问题:

    Kaashoek has demonstrated how the set of primitive operations executed by a computer chip can be expanded to allow cores access to each other’s caches. In order to streamline a program’s execution, an operating system with Kaashoek’s expanded instruction set could, for instance, swap the contents of two caches, so that data moves to the core that needs it without any trips to main memory; or one core could ask another whether it contains the data stored at some specific location in main memory.

    嗯,最后附一张Linux的kernel map:

本文作者: Sigma    在新浪微博关注SigmaSigmaWeibo    RSS订阅本博客
本文链接: http://www.sigma.me/2011/02/26/mit-angstrom-software.html

  1. 2011年2月27日12:27 | #1


  2. 2011年2月27日12:50 | #2



  3. 2011年2月28日05:18 | #3

    machine learning真是啥都能搞。。。去看看吧,应该会很有好处~~

  4. 2011年2月27日13:30 | #4



  5. 2011年2月28日05:19 | #5

    machine learning是啥,一坨sh1t呗!



  6. 2011年2月28日05:17 | #6



  7. 2011年2月28日05:20 | #7



  8. 2011年2月28日06:47 | #8





  9. 2011年2月27日13:01 | #9


  10. 2019年1月9日23:40 | #10

    My wife and i were very comfortable that Edward managed to complete his studies from your precious recommendations he got in your web site. It is now and again perplexing to simply continually be giving freely points which usually some people have been making money from. We acknowledge we need you to be grateful to because of that. Most of the illustrations you have made, the straightforward web site menu, the friendships you give support to instill – it is everything remarkable, and it’s letting our son in addition to our family recognize that the concept is amusing, and that’s tremendously mandatory. Many thanks for everything!

  11. 2019年1月10日16:25 | #11

    Thank you so much for providing individuals with a very remarkable chance to read critical reviews from this website. It can be so fantastic and as well , jam-packed with amusement for me and my office peers to search the blog on the least three times in 7 days to read the fresh tips you have got. Of course, I’m just usually amazed for the stunning advice you serve. Certain 1 tips on this page are completely the most beneficial we have had.

  12. 2019年1月12日06:31 | #12

    I needed to draft you this very small remark to thank you so much as before over the lovely tips you have contributed at this time. It was seriously open-handed with you to grant easily what exactly a number of people would’ve offered for sale as an e book to end up making some profit for their own end, especially considering that you could have tried it in the event you desired. These tricks likewise served to provide a great way to recognize that other people have the same keenness much like my personal own to understand many more with regards to this condition. I believe there are several more fun times up front for those who look over your blog post.

  13. 2019年1月13日03:03 | #13

    I and my buddies have been digesting the excellent information and facts from your website and suddenly came up with a terrible suspicion I had not thanked the web site owner for those secrets. Most of the young boys became as a result glad to read through them and already have in reality been loving those things. Appreciation for indeed being very considerate and then for considering these kinds of useful issues most people are really eager to discover. Our own honest apologies for not expressing gratitude to sooner.

  14. 2019年1月13日20:46 | #14

    I must express some appreciation to you just for bailing me out of this issue. Just after browsing throughout the internet and obtaining methods which were not powerful, I figured my entire life was gone. Being alive without the answers to the difficulties you have solved through this short post is a critical case, and the ones which could have badly affected my career if I hadn’t come across your website. Your own skills and kindness in playing with every item was valuable. I don’t know what I would have done if I had not come upon such a point like this. I can at this moment relish my future. Thank you so much for the high quality and results-oriented guide. I will not hesitate to endorse your site to anybody who needs to have direction about this topic.

  15. 2019年1月14日13:54 | #15

    My wife and i got thrilled Louis could complete his inquiry through your ideas he obtained through your web page. It is now and again perplexing just to be offering secrets which often others have been trying to sell. We grasp we have got the website owner to thank for this. The most important illustrations you made, the straightforward site navigation, the relationships you give support to foster – it’s all spectacular, and it’s really helping our son in addition to us reckon that the issue is fun, and that’s especially fundamental. Thanks for the whole thing!

  16. 2019年1月15日01:32 | #16

    Thanks for your own hard work on this web page. Debby really likes getting into research and it’s really easy to see why. We all notice all concerning the compelling method you present worthwhile ideas through the web blog and in addition increase contribution from some others on the area and our simple princess is undoubtedly discovering a lot. Take pleasure in the remaining portion of the year. Your carrying out a splendid job.

  17. 2019年1月15日08:28 | #17

    I have to express my passion for your generosity giving support to those who require guidance on this particular idea. Your special commitment to passing the solution all over had been astonishingly functional and have surely encouraged women like me to get to their dreams. Your informative instruction entails much a person like me and further more to my mates. Warm regards; from everyone of us.

  18. 2019年1月15日09:16 | #18

    I as well as my buddies appeared to be reading through the excellent hints found on your site then all of the sudden developed an awful feeling I had not thanked the web blog owner for them. All the ladies ended up very interested to study all of them and have in effect in fact been loving them. We appreciate you really being so accommodating and then for pick out certain high-quality themes most people are really wanting to discover. Our sincere regret for not expressing gratitude to you earlier.

  19. 2019年1月16日03:35 | #19

    I must show appreciation to the writer for rescuing me from this circumstance. Right after surfing around through the world-wide-web and getting techniques which were not productive, I figured my life was done. Living without the presence of strategies to the difficulties you have fixed through your good website is a serious case, and the kind that would have in a wrong way affected my entire career if I had not encountered your website. Your main talents and kindness in handling all things was useful. I am not sure what I would have done if I hadn’t discovered such a step like this. I can at this point relish my future. Thanks so much for this specialized and results-oriented help. I won’t be reluctant to refer your site to any individual who needs and wants guide about this subject matter.

  20. 2019年1月16日11:10 | #20

    I simply wished to thank you very much once again. I’m not certain what I might have done without the actual pointers revealed by you over my question. Certainly was an absolute hard dilemma in my view, but considering this well-written tactic you resolved it made me to leap over gladness. I’m thankful for this support and thus wish you are aware of a great job you’re getting into instructing people through the use of a blog. Probably you have never encountered all of us.

  21. 2019年1月16日20:57 | #21

    I precisely had to thank you so much yet again. I’m not certain the things I would have taken care of without those tactics shown by you regarding this concern. It had been a intimidating scenario for me personally, however , coming across a well-written way you solved the issue made me to weep for joy. I am happy for the work and as well , sincerely hope you are aware of an amazing job you’re doing instructing men and women with the aid of your webblog. More than likely you have never met all of us.

  22. 2019年1月17日06:30 | #22

    I would like to express my love for your kindness for individuals who have the need for help with this one niche. Your special dedication to passing the solution across turned out to be unbelievably important and have frequently enabled workers much like me to achieve their dreams. Your amazing interesting guide means so much to me and even more to my office colleagues. With thanks; from everyone of us.

  23. 2019年1月17日14:36 | #23

    I wish to convey my gratitude for your generosity giving support to folks that absolutely need guidance on this niche. Your very own dedication to passing the solution around had been certainly informative and have really made professionals much like me to get to their aims. Your own important useful information can mean so much to me and much more to my colleagues. Thanks a lot; from all of us.

  24. 2019年1月18日00:43 | #24

    My spouse and i ended up being thankful that Ervin managed to complete his preliminary research through the entire precious recommendations he got when using the web page. It’s not at all simplistic to just continually be freely giving techniques which usually a number of people have been making money from. And we also consider we’ve got you to appreciate for that. The entire explanations you have made, the easy website navigation, the friendships you will aid to engender – it’s got most awesome, and it is making our son in addition to the family consider that that article is amusing, and that is incredibly essential. Many thanks for everything!

  25. 2019年1月18日08:16 | #25

    I in addition to my buddies were analyzing the excellent suggestions found on your web blog while all of a sudden got an awful suspicion I had not expressed respect to the website owner for those strategies. All of the guys are actually so stimulated to study them and have in effect certainly been enjoying these things. I appreciate you for really being really accommodating and for finding certain very good information most people are really eager to discover. My sincere regret for not saying thanks to sooner.

  26. 2019年1月19日01:38 | #26

    I precisely wanted to thank you very much yet again. I do not know the things that I would’ve sorted out in the absence of the tactics revealed by you relating to such problem. Previously it was a real difficult case in my opinion, nevertheless noticing your skilled tactic you processed that took me to cry with delight. Now i am happy for your information as well as hope you realize what a great job you happen to be accomplishing teaching men and women using your web site. Most likely you haven’t got to know all of us.

  27. 2019年1月19日08:19 | #27

    I must show some appreciation to the writer for bailing me out of this trouble. Just after surfing through the internet and getting tricks which are not beneficial, I figured my life was over. Existing without the presence of strategies to the problems you’ve fixed by means of your good guide is a critical case, and those which could have badly damaged my entire career if I hadn’t noticed the blog. Your actual expertise and kindness in maneuvering everything was valuable. I’m not sure what I would’ve done if I hadn’t discovered such a stuff like this. I’m able to at this moment relish my future. Thanks a lot very much for your expert and result oriented help. I will not think twice to endorse your web blog to any person who ought to have guide about this subject matter.

  28. 2019年1月19日16:29 | #28

    Thank you a lot for providing individuals with a very remarkable opportunity to read in detail from here. It is often so beneficial and jam-packed with fun for me and my office fellow workers to visit your website more than 3 times in 7 days to read through the fresh secrets you have got. And definitely, we are certainly satisfied considering the breathtaking information served by you. Some 4 points in this posting are without a doubt the most suitable we have all had.

  29. 2019年1月20日02:26 | #29

    I needed to post you that tiny remark to be able to say thank you over again for your personal extraordinary solutions you have featured on this site. This has been quite unbelievably generous of people like you to allow extensively what exactly many individuals might have distributed for an electronic book in making some dough on their own, and in particular now that you might have done it in case you desired. These solutions additionally served like a fantastic way to realize that most people have the identical interest much like my personal own to find out a whole lot more with respect to this issue. I think there are several more fun periods ahead for those who browse through your blog.

  30. 2019年1月20日09:06 | #30

    I am just commenting to let you understand what a awesome experience my friend’s daughter had reading the blog. She even learned several pieces, which included what it’s like to have an incredible giving heart to make many others quite simply know specific advanced topics. You actually did more than our expectations. Thanks for coming up with the effective, trustworthy, explanatory and in addition unique guidance on the topic to Janet.

  31. 2019年1月20日18:04 | #31

    Thanks a lot for providing individuals with an extraordinarily remarkable possiblity to check tips from this web site. It is always very pleasant and full of amusement for me personally and my office co-workers to visit your website the equivalent of thrice a week to study the newest tips you have got. And lastly, I’m just usually pleased concerning the tremendous methods you give. Certain 3 ideas in this article are undoubtedly the most effective I’ve had.

  32. 2019年1月21日01:01 | #32

    I simply desired to say thanks all over again. I am not sure the things I would’ve tried in the absence of the actual strategies discussed by you about such a concern. It previously was a real terrifying condition in my opinion, but observing the very skilled fashion you handled the issue took me to leap over happiness. I am thankful for this assistance and in addition pray you comprehend what a great job you have been providing teaching people by way of your websites. Most probably you’ve never come across any of us.

  33. 2019年1月21日09:54 | #33

    I am only commenting to make you know what a extraordinary experience my friend’s girl went through visiting your webblog. She learned a lot of details, most notably how it is like to possess a very effective coaching style to make other people smoothly grasp a variety of problematic topics. You really did more than visitors’ expectations. I appreciate you for showing the practical, trusted, edifying and also cool tips on the topic to Tanya.

  34. 2019年1月21日17:29 | #34

    I am also writing to let you be aware of what a fabulous discovery my friend’s girl undergone reading your site. She learned such a lot of details, which include how it is like to have a great coaching mood to let other people just grasp some very confusing subject areas. You undoubtedly did more than readers’ expectations. Thank you for showing those necessary, healthy, informative and fun guidance on your topic to Ethel.

  35. 2019年1月22日03:39 | #35

    I’m just commenting to make you know what a extraordinary encounter our girl obtained reading your webblog. She came to find such a lot of issues, not to mention what it’s like to have an incredible giving spirit to have the rest completely learn about certain complex things. You actually surpassed her expectations. I appreciate you for coming up with such interesting, trusted, explanatory and easy tips on this topic to Sandra.

  36. 2019年1月22日11:52 | #36

    A lot of thanks for your own efforts on this blog. Kate take interest in engaging in internet research and it’s really simple to grasp why. Almost all know all regarding the powerful manner you offer rewarding secrets on your web site and in addition encourage response from other people on this content so our favorite princess is really being taught a lot. Take advantage of the remaining portion of the new year. Your carrying out a fantastic job.

  1. 本文目前尚无任何 trackbacks 和 pingbacks.