Hi, I have 3 machines which I would like to setup as a cluster for distributed rendering of 3d graphics, more specific Direct3d. I can do this with Opengl using Wiregl (http://graphics.stanford.edu/software/wiregl/) or better yet Chromium. Does a solution exist for doing the same with Direct3d? Thanks in advance ...
VB 6.0 / ASP (not .NET) web application that runs in a windows server 2003 / IIS environment with sql 2005 server.There is a c/c++ component (exe/service) that runs on the server. Customer would like to run in a windows clustered environment. Problems occur due to use of windows API GetComputerName. This pulls the actual server name, n...
I have an existing multi-instance SQL 2008 cluster, and I'm trying to add Analysis Services to an existing instance. I start the installation, pick "Add features", configure SSAS, and then on the final pre-installation check, I fail the "Existing clustered or cluster-prepared instance" check. Of course I'd fail this check - I'm trying to...
What is database clustering? If you allow the same database to be on 2 different servers how do they keep the data between synchronized. And how does this differ from load balancing from a database server perspective? ...
Hi all, I have 4 servers and JVM is installed on them. I wrote a java service that Quartz calls this services every 10 minutes. But in 4 servers, every 10 minutes 4 calls are done. This sitiuation creates race condition. I want only one service on 4 JVM. How can I do that with Spring Framework? ...
What is the best strategy to refactor a Singleton object to a cluster environment? We use Singleton to cache some custom information from Database. Its mostly read-only but gets refreshed when some particular event occurs. Now our application needs to be deployed in a Clustered environment. By definition, each JVM will have its own Si...
I need to replicate a sequence/counter across an eight node cluster. This means that each http request receives the next value in the sequence by calling something like getNextIntAndIncrement(), where the sequence state is synchronized across all servers. To clarify, this must exist at application/global scope, not session. I know it ...
I have created a console application in C# using .NET 2.0. I have tested the application on the 32 and 64 bit versions of Windows Server 2003 and it is working properly. When I tried to run the application on Windows Server 2008, but it doesn't work. Later, someone told me to turn off UAC (User Access Control and Data Execution Preventio...
I'm a developer of a MMO game and currently we're at my company facing some scalability issues which, I think, can be resolved with proper clustering of the game world. I don't really want to reinvent the wheel that's why I think Linux Virtual Server could be a good choice especially with some Level 7 load balancing technique. I'm cur...
I have the following problem - made abstract to bring out the key issues. I have 10 points each which is some distance from the other. I want to be able to find the center of the cluster i.e. the point for which the pairwise distance to each other point is minimised, let p(j) ~ p(k) represent the pairwise distance beteen points j a...
Let's say I have a Java webapp deployed on some Application Server with clustering across a few nodes. In the webapp, we maintain a cache of some values retrieved from the database, stored in-memory as static variables. Whenever a user performs an update in a particular screen, we clear the cache so that the cached values will be retrie...
I saw this text while reading wikipedia(http://en.wikipedia.org/wiki/K-means%2B%2B) The authors tested their method with real and synthetic datasets and obtained typically 2-fold improvements in speed, and for certain datasets close to 1000-fold improvements in error. and I'm curious about the meaning of -fold, like 1000-fold, 2-f...
I have a job that takes too long time in Java. So I want to divide this job into threads and run them. After the threads finishes their jobs, returns to my service and Service give them new jobs. ThreadGroup is suitable for this or any other recommendation? ...
Hello! I was looking for a way to calculate dynamic market values in a soccer manager game. I asked this question here and got a very good answer from Alceu Costa. I tried to code this algorithm (90 elements, 5 clustes) but it doesn't work correctly: In the first iteration, a high percentage of the elements changes its cluster. From ...
I need to call a web service that performs work for my application. To use the service, you send a token with each request so you can later identify each job. The service provides reporting with a second call, which outputs logging-style records for all work it's performed, regardless of which client or application is fetching the report...
I'm writing a C++ background/server application for Linux/Windows. Is there a standard control/profiling/reporting service I should use to expose my application's current status in a standardized way? If not, what's a good pattern (or library) to use for exposing this kind of data and control? Specifically, I want to expose the follow...
I have 3 tomcat servers where users get into all time. They are 3 because the processing of each request is heavy (lot of sql). Lusers enters to server 1 or 2 or 3. Now I want to make them "one". I know I need do clustering but, will clustering spread the requests thru the 3 servers or here is where I need implement load balancing with a...
We have a single server running Windows Server 2008 with Hyper-V installed running 5 virtual machines. I have purchased a second DELL R805 Server so that we can create a fail-over cluster to our current R805 that is currently in production. Right now, our R805 connects via iSCSI to a MD3000i iSCSI SAN. Before we try to roll out the se...
My current code is pretty quick, but I need to make it even faster so we can accommodate even more markers. Any suggestions? Notes: The code runs fastest when the SQL statement is ordered by marker name - which itself does a very partial job of clustering the markers (the names of markers in the same location are often, but not alway...
I have been playing around with different data clustering algorithms working on finding clusters between random data points represented an nodes, I keep reading that data clustering is used for image recognition. I am failing to make the connection, how does clustering data help in recognizing an image or in facial recognition. can someo...