blocks|key|304831|text|试着看看OpenShift，如果您熟悉Unix/Git，它是免费的，而且很容易使用。我把我的博客放在Java/Unix/MySql堆栈上，并且非常满意。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|304832|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Try taking a look at OpenShift, its free and very easy to use if your familiar with Unix/Git. I host my blog there on a Java/Unix/MySql stack and have been very satisfied.

blocks|key|1456053|text|首先，我建议您理解IaaS和PaaS之间的区别。维基百科总是一个很好的地方，您可以在这里找到这些信息。也许你可以比较一下这两种云计算机模型。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1456054|您将看到，在PaaS上从服务开始要容易得多，因为您不需要安装，也不需要配置任何东西。通常，您只需要一个按钮来提供特定的服务，而不需要很多步骤来部署应用程序。|1456055|您应该寻找不同PaaS提供者的“如何启动”。您可以从这个如何开始教程开始，然后查找类似的指南并比较最重要的提供者。您可以看到，在这个云模型上开始工作是非常容易的。|1456056|entityMap|0|LINK|mutability|MUTABLE|url|http://en.wikipedia.org/wiki/Cloud_computing#Service_models|1|http://developer-blog.cloudbees.com/2013/10/how-to-start-on-cloudbees.html^0|O|4|0|0|0|S|6|1|0^^$0|@$1|2|3|4|5|6|7|R|8|@]|9|@$A|S|B|T|1|U]]|C|$]]|$1|D|3|E|5|6|7|V|8|@]|9|@]|C|$]]|$1|F|3|G|5|6|7|W|8|@]|9|@$A|X|B|Y|1|Z]]|C|$]]|$1|H|3|-4|5|6|7|10|8|@]|9|@]|C|$]]]|I|$J|$5|K|L|M|C|$N|O]]|P|$5|K|L|M|C|$N|Q]]]]

Firstly, I recommend you to understand the difference between an IaaS and a PaaS. <a href="http://en.wikipedia.org/wiki/Cloud_computing#Service_models" rel="nofollow">Wikipedia</a> is always a good place where you can find this information. Maybe you could compare both cloud computer models.

You will see that on PaaS is much easier start with a service since you don't need to install, neither to configure anything. Usually, you just need a button to make available a specific service and not a lot of steps to deploy your application. 

You should look for the "How to start" of different PaaS providers. You can start for this <a href="http://developer-blog.cloudbees.com/2013/10/how-to-start-on-cloudbees.html" rel="nofollow">How to start tutorial</a> and after this, look for similar guides and compare the most important providers. You could see that it is really easy start working on this cloud model.

blocks|key|1456070|text|同意:+PaaS可能是一个很好的起点。不过，我对Java没有任何经验，只是简单的谷歌搜索：http://www.cloudbees.com/可能是一种东西。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1456071|如果你想深入一点，你应该试试亚马逊的EC2。我相信他们做得很好，而且他们提供了一年的免费服务。|1456072|entityMap|0|LINK|mutability|MUTABLE|url|http://www.cloudbees.com/^0|19|P|0|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@$A|O|B|P|1|Q]]|C|$]]|$1|D|3|E|5|6|7|R|8|@]|9|@]|C|$]]|$1|F|3|-4|5|6|7|S|8|@]|9|@]|C|$]]]|G|$H|$5|I|J|K|C|$L|M]]]]

Agree: PaaS might be a good starting point. I don't have any experience with Java though, a quick Google search: <a href="http://www.cloudbees.com/" rel="nofollow">http://www.cloudbees.com/</a> might be something.

If you want to go a bit deeper, you should try out Amazon's EC2. I believe they have done a very good job, plus they offer a free tier for one year.

blocks|key|1456115|text|如果您想用Java构建云计算模拟，请看一看CloudSim+%2B。它是一个现代化的、功能齐全的、高度可扩展的、易于使用的Java+8云计算基础设施和服务建模和仿真框架。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1456116|这是一个积极维护，完全重新设计，更好的组织和大部分文件的项目。它具有大量的独占特性，是maven中心唯一可用的云模拟框架。|1456117|它的一些主要特点和特点包括：|1456118|执行按需分配VM资源(如Ram、带宽和PE(CPU))的垂直VM标度。|ordered-list-item|1456119|水平VM标度，允许根据过载条件动态创建VM。这样的条件是由一个谓词定义的，它可以检查不同VM资源的使用情况，比如CPU、RAM或BW。|1456120|模拟并行执行，允许在一台多核计算机内以一种孤立的方式同时运行多个模拟。|1456121|监听者以启用模拟监视。|1456122|类和接口，以允许实现启发式法，如禁忌搜索、模拟退火、蚁群系统等。看一个这里使用模拟退火的例子。|1456123|entityMap|0|LINK|mutability|MUTABLE|url|http://cloudsimplus.org/|1|https://github.com/manoelcampos/cloudsim-plus/blob/master/cloudsim-plus-examples/src/main/java/org/cloudsimplus/examples/VerticalVmScalingExample.java|2|https://github.com/manoelcampos/cloudsim-plus/blob/master/cloudsim-plus-examples/src/main/java/org/cloudsimplus/examples/LoadBalancerByHorizontalVmScalingExample.java|3|https://github.com/manoelcampos/cloudsim-plus/blob/master/cloudsim-plus-examples/src/main/java/org/cloudsimplus/examples/ParallelSimulationsExample.java|4|https://github.com/manoelcampos/cloudsim-plus/blob/master/cloudsim-plus-examples/src/main/java/org/cloudsimplus/examples/listeners/|5|http://en.wikipedia.org/wiki/Heuristic|6|http://en.wikipedia.org/wiki/Tabu_search|7|http://en.wikipedia.org/wiki/Simulated_annealing|8|http://en.wikipedia.org/wiki/Ant_colony_optimization_algorithms|9|https://github.com/manoelcampos/cloudsim-plus/blob/master/cloudsim-plus-examples/src/main/java/org/cloudsimplus/examples/DatacenterBrokerHeuristicExample.java^0|L|A|0|0|0|0|S|6|1|0|0|6|2|0|0|6|3|0|0|3|4|0|A|4|5|G|4|6|L|4|7|Q|4|8|Z|B|9|0^^$0|@$1|2|3|4|5|6|7|1I|8|@]|9|@$A|1J|B|1K|1|1L]]|C|$]]|$1|D|3|E|5|6|7|1M|8|@]|9|@]|C|$]]|$1|F|3|G|5|6|7|1N|8|@]|9|@]|C|$]]|$1|H|3|I|5|J|7|1O|8|@]|9|@$A|1P|B|1Q|1|1R]]|C|$]]|$1|K|3|L|5|J|7|1S|8|@]|9|@$A|1T|B|1U|1|1V]]|C|$]]|$1|M|3|N|5|J|7|1W|8|@]|9|@$A|1X|B|1Y|1|1Z]]|C|$]]|$1|O|3|P|5|J|7|20|8|@]|9|@$A|21|B|22|1|23]]|C|$]]|$1|Q|3|R|5|J|7|24|8|@]|9|@$A|25|B|26|1|27]|$A|28|B|29|1|2A]|$A|2B|B|2C|1|2D]|$A|2E|B|2F|1|2G]|$A|2H|B|2I|1|2J]]|C|$]]|$1|S|3|-4|5|6|7|2K|8|@]|9|@]|C|$]]]|T|$U|$5|V|W|X|C|$Y|Z]]|10|$5|V|W|X|C|$Y|11]]|12|$5|V|W|X|C|$Y|13]]|14|$5|V|W|X|C|$Y|15]]|16|$5|V|W|X|C|$Y|17]]|18|$5|V|W|X|C|$Y|19]]|1A|$5|V|W|X|C|$Y|1B]]|1C|$5|V|W|X|C|$Y|1D]]|1E|$5|V|W|X|C|$Y|1F]]|1G|$5|V|W|X|C|$Y|1H]]]]

If you want to build cloud computing simulations in Java, take a look at <a href="http://cloudsimplus.org" rel="nofollow noreferrer">CloudSim Plus</a>. It is a modern, full-featured, highly extensible and easier-to-use Java 8 Framework for Modeling and Simulation of Cloud Computing Infrastructures and Services.

It is an actively maintained, totally re-designed, better organized and largely documented project. It has a large number of exclusive features and is the only cloud simulation framework available at maven central.

Some of its main characteristics and features include:

<ol>
<li><a href="https://github.com/manoelcampos/cloudsim-plus/blob/master/cloudsim-plus-examples/src/main/java/org/cloudsimplus/examples/VerticalVmScalingExample.java" rel="nofollow noreferrer">Vertical VM Scaling</a> 
that performs on-demand up and down allocation of VM resources such as Ram, Bandwidth and PEs (CPUs).</li>
<li><a href="https://github.com/manoelcampos/cloudsim-plus/blob/master/cloudsim-plus-examples/src/main/java/org/cloudsimplus/examples/LoadBalancerByHorizontalVmScalingExample.java" rel="nofollow noreferrer">Horizontal VM scaling</a>, allowing dynamic creation of VMs according to an overload condition. Such a condition is defined by a predicate that can check different VM resources usage such as CPU, RAM or BW.</li>
<li><a href="https://github.com/manoelcampos/cloudsim-plus/blob/master/cloudsim-plus-examples/src/main/java/org/cloudsimplus/examples/ParallelSimulationsExample.java" rel="nofollow noreferrer">Parallel execution of simulations</a>, allowing several simulations to be run simultaneously, in a isolated way, inside a multi-core computer.</li>
<li><a href="https://github.com/manoelcampos/cloudsim-plus/blob/master/cloudsim-plus-examples/src/main/java/org/cloudsimplus/examples/listeners/" rel="nofollow noreferrer">Listeners</a> to enable simulation monitoring.</li>
<li>Classes and interfaces to allow implementation of <a href="http://en.wikipedia.org/wiki/Heuristic" rel="nofollow noreferrer">heuristics</a> such as 
<a href="http://en.wikipedia.org/wiki/Tabu_search" rel="nofollow noreferrer">Tabu Search</a>, <a href="http://en.wikipedia.org/wiki/Simulated_annealing" rel="nofollow noreferrer">Simulated Annealing</a>, 
<a href="http://en.wikipedia.org/wiki/Ant_colony_optimization_algorithms" rel="nofollow noreferrer">Ant Colony Systems</a> and so on. See an <a href="https://github.com/manoelcampos/cloudsim-plus/blob/master/cloudsim-plus-examples/src/main/java/org/cloudsimplus/examples/DatacenterBrokerHeuristicExample.java" rel="nofollow noreferrer">example using Simulated Annealing here</a>.</li>
</ol>

I am an Engineering final year student. I am doing project in cloud computing. I have confident idea about the concept. But i don't know how to simulate the concept in cloud. For PG student level Which cloud computing simulation environment is easy to use? Kindly give your 
valuable suggestion. ( Now i am implementing the concept in java )

cloud computing simulation environment for project

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我是工程系最后一年级的学生。我在做云计算的项目。我对这个概念有信心。但我不知道如何在云中模拟这个概念。对于PG学生级的，哪个云计算仿真环境容易使用？给出了您的宝贵建议。(现在我正在用java实现这个概念)

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