cloud computing - Page 156

How to create a fully functional server of own? [closed]

- by Saransh Sharma

Hi i am looking for various companies for cloud hosting and servers dedicated one but i am not pleased with service being provided in our country and don't wanna opt to other country rather then India,well and also looking in cost factor too....so what i am looking is to create our own server which we can manage basically its like we would create a server or a machine or a pc and make it online and will use it as a server Problem is we need fully managed solution and we are not getting it anywhere and we are a startup looking to save and create something new in server so guys is it possible to create a server a webserver with home/dedsktop pc PLease help Saransh sharma

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How do I give MacPorts privileges?

- by cojadate

I tried to install PostgreSQL server development libraries using MacPorts and got the following: Warning: MacPorts running without privileges. You may be unable to complete certain actions (e.g. install). ---> Computing dependencies for postgresql-server-devel ---> Dependencies to be installed: postgresql-devel ---> Building postgresql-devel Error: Target org.macports.build returned: shell command failed Error: The following dependencies failed to build: postgresql-devel Error: Status 1 encountered during processing. To report a bug, see <http://guide.macports.org/#project.tickets> So I guess that means I need to running MacPorts with privileges and try again. Unfortunately I've no idea how to give MacPorts privileges. I'm running OS X 10.6.3

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Precompile Lambda Expression Tree conversions as constants?

- by Nathan

It is fairly common to take an Expression tree, and convert it to some other form, such as a string representation (for example this question and this question, and I suspect Linq2Sql does something similar). In many cases, perhaps even most cases, the Expression tree conversion will always be the same, i.e. if I have a function public string GenerateSomeSql(Expression<Func<TResult, TProperty>> expression) then any call with the same argument will always return the same result for example: GenerateSomeSql(x => x.Age) //suppose this will always return "select Age from Person" GenerateSomeSql(x => x.Ssn) //suppose this will always return "select Ssn from Person" So, in essence, the function call with a particular argument is really just a constant, except time is wasted at runtime re-computing it continuously. Assuming, for the sake of argument, that the conversion was sufficiently complex to cause a noticeable performance hit, is there any way to pre-compile the function call into an actual constant?

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Formatting a barcode with hyphens in between - Assignment question

- by capex

Hi, The assignment at my first year uni computing course says my program should read a barcode number, and then display the same 13 digit barcode number separated by hyphens. For example, 9300675016902 should look like 930-067501-690-1. The restrictions say I can't use the following: No arrays No strings No functions. Any directions on this? (So far I have done this: part1 = barcode/10000000000; which gives me the first three digits, and this: part4 = barcode%10; which gives me the last digit. Thanks in advance!

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Sum of path products in DAG

- by Jules

Suppose we have a DAG with edges labeled with numbers. Define the value of a path as the product of the labels. For each (source,sink)-pair I want to find the sum of the values of all the paths from source to sink. You can do this in polynomial time with dynamic programming, but there are still some choices that can be made in how you decompose the problem. In my case I have one DAG that has to be evaluated repeatedly with different labelings. My question is: for a given DAG, how can we pre-compute a good strategy for computing these values for different labelings repeatedly. It would be nice if there was an algorithm that finds an optimal way, for example a way that minimizes the number of multiplications. But perhaps this is too much to ask, I would be very happy with an algorithm that just gives a good decomposition.

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Information System for an Academic Institution

- by birukw

Hi, The University I am working for is undergoing a major renovation of the ICT system. The team currently undertaking the task is designing a centralized system with the intent of providing most (if not all) services of the institution electronically. Most of us are academicians with little practical experience. The questions we need answers for are What are the systems (preferably free, as in Beer, and/or open) and best-practices in use in other academic institutions? What are the experiences of people administering academic ICT systems? What are the overheads of attempting to provide services through an intranet cloud (like UEC) for us (a medium-sized academic institution, in a third-world country)? We would very much appreciate it if you could give us your take on the situtation. Thanks

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Recommendations for Spam Filter

- by dotdev

We are currently using MxGuardDog for spam filtering. It works by pointing our MX records at their mail servers. The service seems pretty good, it keeps out the obvious spam, but I would still say it let's through mail that to me is spam, but I accept that on the surface those emails may not flag any of the universally recognised indicators for spam. If an email comes through that I believe is spam, I can login to the Web Console and blacklist the email/domain. However, 99% of the time I don't because it's inconvenient - or, should i say, it's far less convenient than a button in Outlook that allows me to report the email/domain as spam. So, what we're looking for is a similar service i.e. cloud spam filtering that has an Outlook plugin so that Administrators/Users can report spam. We are only a small company, 10 users, so cost is of course an issue for us. Many thanks dotdev

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Help using Horner's rule and Hash Functions in JAVA?

- by Matt

I am trying to use Horner's rule to convert words to integers. I understand how it works and how if the word is long, it may cause an overflow. My ultimate goal is to use the converted integer in a hash function h(x)=x mod tableSize. My book suggests, because of the overflow, you could "apply the mod operator after computing each parenthesized expression in Horner's rule." I don't exactly understand what they mean by this. Say the expression looks like this: ((14*32+15)*32+20)*32+5 Do I take the mod tableSize after each parenthesized expression and add them together? What would it look like with this hash function and this example of Horner's rule?

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Ubuntu server - Problem of routing

- by Max

Hi, I have setup a Ubuntu server with Ubuntu Enterprise Cloud. The server is connected to a private LAN with DHCP and Internet access (via a gateway). At first, the server was working fine. It can ping the internet. It can also ping other machine inside LAN. The problem happened after i let the machine idle for more than 1 hour. When I want to use the machine again, I can't ping the internet anymore. I can only ping the machine inside LAN. I try to ping the server from another machine and it's working. Then, i ssh into that server from another machine, and I found that I can ping the internet from that server. It seems that there are some problems in the routing table of this server. Can anyone help me on this? Thank you. Max

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Is there an online storage service that works with Windows 7 Backup and Restore? [closed]

- by user57813

I love Windows 7 Backup and Restore.. However, I kind of find it inconvenient to use external hard drive, plug it in, take it out, put it away safely etc.. Is there an online storage service to which Windows Backup can save the backup files to? Can I make Windows Backup store the backed up data to an online storage service? I do not want to manually upload the backup files. I want it to save directly to the cloud. Doesn't matter if the service costs me some $$$. I am using Windows 7 Ultimate 32-bit edition.

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Compiling LaTeX document makes Google Drive crash

- by Sander

I've the issue that when I compile a LaTeX document that is located inside my Google Drive this will after a few turns make the OSX Google Drive application crash. As this is an important document I want to keep it all the time inside the Google Drive location to ensure cloud backup but this ofcourse is not guaranteed if this makes my Google Drive crash all the time. I don't seem te be able to identify what is causing this and I was hoping that maybe some people here have any idea what might cause this? We're talking about a 8 pages document with 3 images, so nothing crazy big or complex.

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Backup Client/Server Software that Syncs only the Delta?

- by Urda

I have a co-located server, and a desktop computer. I push small things and large ammounts of small files (like my iTunes) into a JungleDisk cloud. If a few files change there, no big deal, the file gets re-uped. For larger files JungleDisk backup isn't helpful. Things like movies and VMware images that change a lot, but I want backed up. Just not to JungleDisk since that would cost me even more money. I am looking for a product, closed or open source (preferably open source) that will sync the change, or delta, to my personal server on a schedule. That way I can keep a copy of my larger things, without paying JungleDisk a ton more since they are in the range of many Gigabytes. Right now these few items are backed up over FTP, and take forever. Both the client and server are windows environments.

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configure time sync for azure VMs

- by Pharao2k

I have several ExtraSmall-sized Azure VMs (PaaS / Cloud Service based) that are all experiencing drifting of the Windows clock. Research showed that this is quite common, especially in VMs with shared cores. Unfortunately even after configuring the w32time service to sync with time.windows.com and forcing a resync (w32tm /resync), there seems to be a time difference of 2 seconds to the configured NTP server. Though Microsoft states that w32tm is not meant as a high-precision sync tool, a difference of 2 seconds is (IMO) quite a lot for server-activities/processing. What does one have to do to get more accurate time sync?

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Call an member function implementing the {{#linkTo ...}} helper from javascript code

- by gonvaled

I am trying to replace this navigation menu: <nav> {{#linkTo "nodes" }}  {{t generic.nodes}} {{grayOut "(temporal)"}}{{/linkTo}} {{#linkTo "services" }}  {{t generic.services}}{{/linkTo}} {{#linkTo "agents" }}  {{t generic.agents}}{{/linkTo}} {{#linkTo "extensions" }}  {{t generic.extensions}}{{/linkTo}} {{#linkTo "voiceMenus" }}  {{t generic.voicemenus}}{{/linkTo}} {{#linkTo "queues" }}  {{t generic.queues}}{{/linkTo}} {{#linkTo "contacts" }}  {{t generic.contacts}}{{/linkTo}} {{#linkTo "accounts" }}  {{t generic.accounts}}{{/linkTo}} {{#linkTo "locators" }}  {{t generic.locators}}{{/linkTo}} {{#linkTo "phonelocations" }}  {{t generic.phonelocations}}{{/linkTo}} {{#linkTo "billing" }}  {{t generic.billing}}{{/linkTo}} {{#linkTo "profile" }}  {{t generic.profile}}{{/linkTo}} {{#linkTo "audio" }}  {{t generic.audio}}{{/linkTo}} {{#linkTo "editor" }}  {{t generic.node_editor}}{{/linkTo}} </nav> With a more dynamic version. What I am trying to do is to reproduce the html inside Ember.View.render, but I would like to reuse as much Ember functionality as possible. Specifically, I would like to reuse the {{#linkTo ...}} helper, with two goals: Reuse existing html rendering implemented in the {{#linkTo ...}} helper Get the same routing support that using the {{#linkTo ...}} in a template provides. How can I call this helper from within javascript code? This is my first (incomplete) attempt. The template: {{view SettingsApp.NavigationView}} And the view: var trans = Ember.I18n.t; var MAIN_MENU = [ { 'linkTo' : 'nodes', 'i-class' : 'icon-cloud', 'txt' : trans('generic.nodes') }, { 'linkTo' : 'services', 'i-class' : 'icon-phone', 'txt' : trans('generic.services') }, ]; function getNavIcon (data) { var linkTo = data.linkTo, i_class = data['i-class'], txt = data.txt; var html = '  ' + txt; return html; } SettingsApp.NavigationView = Ember.View.extend({ menu : MAIN_MENU, render: function(buffer) { for (var i=0, l=this.menu.length; i<l; i++) { var data = this.menu[i]; // TODO: call the ember function implementing the {{#linkTo ...}} helper buffer.push(getNavIcon(data)); } return buffer; } });

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Need details about applications that are running on Windows Azure

- by veda

I have an application which requires large amount of data storage (say some PB) and computing resources. Instead of going for clusters, I am planning to propose to use Windows Azure Cloud for this application. I have gone through white papers of Windows Azure and have collected some details about Azure. But I feel that is not substantial. I need to do some case study about applications that are running on the azure and that uses azure storage efficiently. I looked for several research paper in related to performance of the applications in Windows Azure. But as Azure was quite new, I wasn't able to find any. Now, I am looking for some white papers/details regarding application that uses azure storage to substantiate my proposal. I also need to understand the windows azure storage architecture and virtual machine architecture. Do anyone know some research papers or details or blogs or something related to these topics.

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Binomial test in Python

- by Morlock

I need to do a binomial test in Python that allows calculation for 'n' numbers of the order of 10000. I have implemented a quick binomial_test function using scipy.misc.comb, however, it is pretty much limited around n = 1000, I guess because it reaches the biggest representable number while computing factorials or the combinatorial itself. Here is my function: from scipy.misc import comb def binomial_test(n, k): """Calculate binomial probability """ p = comb(n, k) * 0.5**k * 0.5**(n-k) return p How could I use a native python (or numpy, scipy...) function in order to calculate that binomial probability? If possible, I need scipy 0.7.2 compatible code. Many thanks!

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Improving server security [closed]

- by Vicenç Gascó

I've been developing webapps for a while ... and I always had a sysadmin which made the environment perfect to run my apps with no worries. But now I am starting a project on myself, and I need to set up a server, knowing near to nothing about it. All I need to do is just have a Linux, with a webserver (I usually used Apache), PHP and MySQL. I'll also need SSH, SSL to run https:// and FTP to transfer files. I know how to install almost everything (need advice about SSL) with Ubuntu Server, but I am concerned about the security topic ... say: firewall, open/closed ports, php security, etc ... Where can I found a good guide covering this topics? Everything else in the server... I don't need it, and I wanna know how to remove it, to avoid resources consumption. Final note: I'll be running the webapp at amazon-ec2 or rackspace cloud servers. Thanks in advance!!

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In C#, can I hide/modify accessors in subclasses?

- by Diego

I'm not even sure what this principle is called or how to search for it, so I sincerely apologize if it has been brought up before, but the best way to do it is with an example. class Properties { public string Name { get; set; } } class MyClass { class SubProperties: Properties { public override Name { get { return GetActualName(); } set { _value = SetActualName(value); } } } public SubProperties ClassProperties; private GetActualName() { ClassProperties.Name = "name"; } private SetActualName(string s) { ClassProperties.Name = SomeOtherFunction(s); } } The idea is to have any object that instantiates MyClass have a fully accessible property ClassProperties. To that object, it would look exactly like a Properties object, but behind the scenes, MyClass is actually computing and modifying the results of the fields. This method of declaration is obviously wrong since I can't access GetActualName() and SetActualName() from within the SubProperties definition. How would I achieve something like this?

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How do I start DB2 on an Amazon EC2 Volume?

- by Spike Williams

I've got an instance of DB2 installed as part of an IBM WebSphere Portal development AMI on the Amazon EC2 cloud. Its installed a separate, persistent file system from the rest of the AMI. Yesterday, the AMI was terminated, and DB2 went down as part of that. It was not shut down cleanly, just terminated. Today, I am trying to restart the WebSphere portal server, which needs to connect to the DB2 instance. But the DB2 instance is down. So I need to restart my DB2 instance, but how to do that is not immediately obvious. Can someone tell me what I need to run to get it going again? OS is SuSE Linux, DB2 version is 9.1

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Google Drive stripped Outlook 2010 of all emails, contacts, etc

- by David

I have a business that requires I use the business email: [email protected] I loaded Google Drive as a free cloud to share project details with co-worker. Side effect is that Outlook 2010 does not work now. All incoming emails are now transferred to my personal Google account. Now I can not send business emails inclusive of business headers and footers since Outlook is erroring on send/receive. And all my history of email organization on Outlook is gone. I was previously successfully syncing outlook through Google calendar to keep my blackberry sync'd Your help is appreciated - thank you. David

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Scripting window positioning in OS X

- by Matt Trent

My primary computing setup is a macbook pro with a large external monitor. I'm looking for a convenient way of moving a number of the windows of open programs from the laptop screen to the external monitor when I plug it in. I've seen a few partial scripts for accomplishing this, but nothing comprehensive. Ideally I'd like to specify the laptop screen location and external monitor location for each window and be able to toggle between them. Is anyone aware of any existing utility or Applscripts that can perform this?

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C or Ada for engineering computations?

- by yCalleecharan

Hi,as an engineer I currently use C to write programs dealing with numerical methods. I like C as it's very fast. I don't want to move to C++ and I have been reading a bit about Ada which has some very good sides. I believe that much of the software in big industries have been or more correctly were written in Ada. I would like to know how C compares with Ada. Is Ada fast as C? I understand that no language is perfect but I would like to know if Ada was designed for scientific computing. Thanks a lot...

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AFP / Apple Filling Protocol aka Netatalk access over Internet

- by PJJ

I got a simple cloud server and thought it would be nice to have mac native afp Volumes accesss. Installed Netatalk and this seems to work pretty nice. No sensitive data or something but I don't like to wake up someday and have my www docs rm-rfed by some kid h4x0r. Q1: Is afp encrypted? Q2: How can I make it (semi)secure? Q3: Does VPN makes sense for this? Q4: What would you do to get afp working over net? Opening any service meant for Lan only is a basic flaw, i know - but me be ignorant about it. According to Apple Dev only the authentication is encrypted or am I mssing something?

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Efficiency of while(true) ServerSocket Listen

- by Submerged

I am wondering if a typical while(true) ServerSocket listen loop takes an entire core to wait and accept a client connection (Even when implementing runnable and using Thread .start()) I am implementing a type of distributed computing cluster and each computer needs every core it has for computation. A Master node needs to communicate with these computers (invoking static methods that modify the algorithm's functioning). The reason I need to use sockets is due to the cross platform / cross language capabilities. In some cases, PHP will be invoking these java static methods. I used a java profiler (YourKit) and I can see my running ServerSocket listen thread and it never sleeps and it's always running. Is there a better approach to do what I want? Or, will the performance hit be negligible? Please, feel free to offer any suggestion if you can think of a better way (I've tried RMI, but it isn't supported cross-language. Thanks everyone

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Windows Server 2008: How to tell if a user is a 'local' use or a 'domain' user

- by David

I'm a developer, not a server admin, so please bear with me! I've been tasked with checking the installation of some software on a Windows Server 2008 R2 machine in the cloud, within two scenarios: There is no domain, the software will use local users and groups for authentication There is a domain, the software will use domain users and groups for authentication I've done part 1, but I'm puzzled about part 2. I've just installed the Active Directory Domain Services role on the server, so now I have a domain of one computer. When I look in Active Directory Users and Computers, I see all my original local users and groups. Have they now been 'promoted' to domain users? Or do I not have any domain users yet? Is there a way I can tell the difference between domain users and local users now? Thanks

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Search found 5318 results on 213 pages for 'cloud computing'.

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- by Saransh Sharma

- by cojadate

- by Nathan

- by capex

- by Jules

- by birukw

- by dotdev

- by Matt

- by Max

- by user57813

- by Sander

- by Urda

- by Pharao2k

- by gonvaled

- by veda

- by Morlock

- by Vicenç Gascó

- by Diego

- by Spike Williams

- by David

- by Matt Trent

- by yCalleecharan

- by PJJ

- by Submerged

- by David

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