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  • Rant - Why is Windows Azure not available in Africa?

    - by Allan Rwakatungu
    Yesterday at the .NET user group meeting in Kampala Uganda  I gave a talk on cloud computing with Windows Azure  (details will be in my next blog post). The guys where excited. Without owning they own inftrastucture and at low cost they can build scalable , highly available applications. Not quite. Azure accounts are only available to people in particular countries - none from Africa. I attended PDC in 2008 when Microsoft unleashed Windows Azure. One of the case studies to show the benefits ofr cloud computing was a project in Africa for an education service in Ethiopia. The point they where making was that the cloud was perfect for scenarios where computing infrastructure is not sophiscated, like Ethiopia. Perfect , i thought. So i got my beta account from PDC and started playing around in the cloud. Then Azure goes live , my beta account does not work any more and I cant pay because am from Uganda. Microsoft , this sucks. I dont know the reasons for Microsoft doing this, but am sure we can work out something. We in Africa need the cloud more than anybody else in the world. Setting up data centers that are higly scalable and available for our startups is not an option we have. But we also cant pay for cloud computing with Microsoft. Microsoft, we know we are a tiny insigficant market for a company your size, but your excluding us only continues to widen the digital divide. Microsoft , how about you have a reseller model for cloud computing. Instead of trying to deal direclty with each client you have local partners who help you sell and bill your cloud services. I think that would lead to Windows Azure being available in Africa. I can help you resell in Uganda.

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  • Windows Azure Platform for Enterprises

    Cloud computing has already proven worthy of attention from established enterprises and start-ups alike. Most businesses are looking at cloud computing with more than just idle curiosity. As of this writing, IT market research suggests that most enterprise IT managers have enough resources to adopt cloud computing in combination with on-premises IT capabilities.

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  • Windows Azure Platform for Enterprises

    Cloud computing has already proven worthy of attention from established enterprises and start-ups alike. Most businesses are looking at cloud computing with more than just idle curiosity. As of this writing, IT market research suggests that most enterprise IT managers have enough resources to adopt cloud computing in combination with on-premises IT capabilities.

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  • MathWorks offre une nouvelle fonctionnalité de calculs parallèles pour une simulation plus rapide et une génération de code améliorée

    MathWorks propose une nouvelle fonctionnalité de calculs parallèles Pour une simulation plus rapide et une génération de code améliorée grâce à Parallel Computing Toolbox MathWorks a annoncé aujourd'hui une nouvelle fonctionnalité qui permet d'accélérer la génération de code de système utilisant le référencement de modèles. Cette amélioration est rendue possible par Real-Time Workshop, un outil de génération de code qui tire désormais parti des outils d'amélioration de performance de la Parallel Computing Toolbox et du MATLAB Distributed Computing Server (MDCS). Cette fonction élargit également la prise en charge des calculs parallèles dans d'autres outils MathWorks pour améliorer...

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  • What is the cloud?

    - by llaszews
    Everyone has their own definition cloud computing. This is a real conversation overheard at small cafe in NH between two general contractors: Contractor One: I can't get document I need because it is on my home PC. Contractor Two: You need cloud computing! Contractor One: What the hell is that? Contractor Two: You log into one computer and all your information for all your other computers is available. The NH live free or die definition of cloud computing!

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  • Which one to select for my future career; Java, C#, Azure or Apex?

    - by user636195
    Hi folks, This time, I am going to studying Masters in Computer Science in U.S.A after a week. I have been doing my B.Sc for the past three years and after my freshman year I started working on projects (in C# and very rarely in Java) for the past two years.(i.e while I was a second and third year student). Now I am in a college where all of the programming courses are going to be taken in Java only (using Eclipse) and I am going to stay in this college for 8 months on campus and then fully employed for two years in other companies as a CPT. I really love to work on Microsoft products because, for me, they are simple and easy to use and understand. My future plan is to work in Cloud computing and be a Cloud based business owner in the near future. Since the college is going to teach us and let us do every project in Java, I was confused which programming language to use that will help me and enhance me in my career, and of course I wanted to select the one I liked to do everytime. I also heard a lot about Azure (Microsoft’s ) and Apex (Salesforce.com’s cloud computing programming language). Would you please give me your advice and recommendation based on my situation? Should I have to study only Java, or should I have to study C# or Azure beside Java on my own? The reason I asked this is because, since I have no clue how Azure works and how long it will take me to know the language, I am really confused which one to select (Java Vs C# and Azure Vs Apex or if there is any popular and mostly used Cloud Computing langauge). Do you think I can get a job in cloud computing if I study Azure or Apex by my own without experience? There is also one issue I want to consider which is a short term issue is. i.e Salary. Since I have to pay my student loan, I also need to get a good job which will let me pay my loan within two years. But, as I said, my long term plan is, get experience in Cloud Computing (from programming to administrative part,i.e every area of cloud computing) and then have my own business may be within 5-10 years. What do you think? Thank you for your time.

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  • VMware présente vCenter Operations pour rationaliser la gestion des infrastructures virtuelles intelligentes

    VMware présente vCenter Operations Pour rationaliser la gestion des infrastructures virtuelles intelligentes Après VMware View 4.6, VMware, annonce une nouvelle solution pour simplifier et automatiser la gestion des services IT dans les environnements virtuels et dynamiques de cloud computing. VMware vCenter perations est destiné à optimiser l'exploitation opérationnelle des systèmes d'information des entreprises de manière à bénéficier de l'agilité et des économies financières inhérentes au cloud computing « Le cloud computing repose sur une approche fondamentalement nouvelle de l'informatique caractérisée par la mise en commun des différents types de ressources, par une gestion extr...

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  • Which technologies will most affect Financial Services over the next decade? [on hold]

    - by opposite of you
    I couldn't quite think of a proper description, so as Wikipedia puts it so beautifully: Financial services are the economic services provided by the finance industry, which encompasses a broad range of organizations that manage money, including credit unions, banks, credit card companies, insurance companies, consumer finance companies, stock brokerages, investment funds and some government sponsored enterprises. These are quite a range of industries. I've already thought about how banks specifically have gotten involved with app markets allowing users to make transfers on the go, and this goes with cloud computing, but what else could there be apart from mobile technologies and cloud computing? Or how else could they be used? I feel like I'm thinking about this wrong.. Apart from mobile computing and cloud computing, what other examples will influence the sector either positively or negatively?

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  • Fast JSON serialization (and comparison with Pickle) for cluster computing in Python?

    - by user248237
    I have a set of data points, each described by a dictionary. The processing of each data point is independent and I submit each one as a separate job to a cluster. Each data point has a unique name, and my cluster submission wrapper simply calls a script that takes a data point's name and a file describing all the data points. That script then accesses the data point from the file and performs the computation. Since each job has to load the set of all points only to retrieve the point to be run, I wanted to optimize this step by serializing the file describing the set of points into an easily retrievable format. I tried using JSONpickle, using the following method, to serialize a dictionary describing all the data points to file: def json_serialize(obj, filename, use_jsonpickle=True): f = open(filename, 'w') if use_jsonpickle: import jsonpickle json_obj = jsonpickle.encode(obj) f.write(json_obj) else: simplejson.dump(obj, f, indent=1) f.close() The dictionary contains very simple objects (lists, strings, floats, etc.) and has a total of 54,000 keys. The json file is ~20 Megabytes in size. It takes ~20 seconds to load this file into memory, which seems very slow to me. I switched to using pickle with the same exact object, and found that it generates a file that's about 7.8 megabytes in size, and can be loaded in ~1-2 seconds. This is a significant improvement, but it still seems like loading of a small object (less than 100,000 entries) should be faster. Aside from that, pickle is not human readable, which was the big advantage of JSON for me. Is there a way to use JSON to get similar or better speed ups? If not, do you have other ideas on structuring this? (Is the right solution to simply "slice" the file describing each event into a separate file and pass that on to the script that runs a data point in a cluster job? It seems like that could lead to a proliferation of files). thanks.

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  • O(log n) algorithm for computing rank of union of two sorted lists?

    - by Eternal Learner
    Given two sorted lists, each containing n real numbers, is there a O(log?n) time algorithm to compute the element of rank i (where i coresponds to index in increasing order) in the union of the two lists, assuming the elements of the two lists are distinct? I can think of using a Merge procedure to merge the 2 lists and then find the A[i] element in constant time. But the Merge would take O(n) time. How do we solve it in O(log n) time?

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  • Some optimization about the code (computing ranks of a vector)?

    - by user1748356
    The following code is a function (performance-critical) to compute tied ranks of a vector: mergeSort(x,inds,ci); //a sort function to sort vector x of length ci, also returns keys (inds) of x. int tj=0; double xi=x[0]; for (int j = 1; j < ci; ++j) { if (x[j] > xi) { double rankvalue = 0.5 * (j - 1 + tj); for (int k = tj; k < j; ++k) { ranks[inds[k]]=rankvalue; }; tj = j; xi = x[j]; }; }; double rankvalue = 0.5 * (ci - 1 + tj); for (int k = tj; k < ci; ++k) { ranks[inds[k]]=rankvalue; }; The problem is, the supposed performance bottleneck mergeSort(), which is O(NlogN) is several times faster than the other part of codes (which is O(N)), which suggests there is room for huge improvment with the other part of the codes, any advices?

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