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Groups > comp.programming.threads > #1878
| From | aminer <aminer@toto.net> |
|---|---|
| Newsgroups | comp.programming.threads, comp.programming |
| Subject | Scalability... |
| Date | 2013-10-09 18:17 -0700 |
| Organization | albasani.net |
| Message-ID | <l34v7r$9v2$1@news.albasani.net> (permalink) |
Cross-posted to 2 groups.
Hello, So if you have undersood my ideas and my arguments aginst the Amdahl's equation, i have proved to you that the Amdahl's equation gives you the scalability that you will have in an IDEAL CONTENTION SCENARIO , but if you have less contention it will scale much better, and in a none contention scenario it will have a perfect scalability, so if you have a small serial part let say of S = 0.1% so the Amdahl's equation says that your program will scale to a maximum of 10, but that's false , it can scale much more than that if you introduce randomness in the Parallel part to avoid the ideal contention scenario, something like wait(random(something_like_the+time_of_your_bigger_locked_region)) or something like that and this will scale your application to much more than 10X, so the very important part is to introduce an optimal randomness of a more optimal wait , but you don't have to use sleep() for that, just to loop around a pause asm instruction for example and this will give you better scalability than 10X. Thank you, Amine Moulay Ramdane.
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Scalability... aminer <aminer@toto.net> - 2013-10-09 18:17 -0700 Re: Scalability... Robert Wessel <robertwessel2@yahoo.com> - 2013-10-09 20:42 -0500
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