cluster-computing

Can someone point me to the Akka version that has the package akka.cloud.cluster? I am currently using Akka 1.2-RC6. google searches on this topic result in broken links about Cloudy Akka... Cloudy Akka was described here as a suite of commercial add-on modules for Akka. The original company developing Akka have since merged with Typesafe . The latest seems to be this topic from the akka user mailing list, specifically: "the Cloudy Akka project is split up: the stuff interesting for developers (like distribution etc) is going to be free and part of Akka 2.0 the stuff interesting for operations

I am having problems getting the sticky-sessions socket.io module to work properly with even a simple example. Following the very minimal example given in the readme ( https://github.com/indutny/sticky-session ), I am just trying to get this example to work: var cluster = require('cluster'); var sticky = require('sticky-session'); var http = require('http'); if (cluster.isMaster) { for (var i = 0; i < 4; i++) { cluster.fork(); } Object.keys(cluster.workers).forEach(function(id) { console.log("Worker running with ID : " + cluster.workers[id].process.pid); }); } if (cluster.isWorker) { var

I would like to setup a SLURM cluster . How many machines do I need at minimum? Can I start with 2 machines (one being only client, and one being both client and server)? You can start using only one machine, but 2 machines will be the most standard configuration, being one machine the controller and the other the "worker" node. With this model you can add as many machines to the cluster being "worker" nodes. This way the server will not execute jobs, and will be not suffering jobs interference. As @Carles wrote, you can use only one computer if you want, running both the controller (

I'm trying to run a very large set of batch jobs on a RHEL5 cluster which uses a Lustre file system. I was getting a strange error with roughly 1% of the jobs: they could't find a text file they are all using for steering. A script that reproduces the error looks like this: #!/usr/bin/env bash #PBS -t 1-18792 #PBS -l mem=4gb,walltime=30:00 #PBS -l nodes=1:ppn=1 #PBS -q hep #PBS -o output/fit/out.txt #PBS -e output/fit/error.txt cd $PBS_O_WORKDIR mkdir -p output/fit echo 'submitted from: ' $PBS_O_WORKDIR files=($(ls ./*.txt | sort)) # <-- NOTE THIS LINE cat batch/fits/fit-paths.txt For some

Suppose I created a JMS Topic (PropertiesTopic) with one subscriber (PropertiesSubscriber). PropertiesSubscriber is running in a load balanced application server cluster as shown in the picture below. alt text http://www.freeimagehosting.net/uploads/be28c03781.png When a message is delivered to PropertiesTopic, do all the instances of PropertiesSubscriber running on different app servers get that message or does the message get delivered to only one PropertiesSubscriber instance running on an app server determined by the load balancer? JMS 2.0 introduces shared subscriptions . These allow

I have three machines located in different networks: as-master as-node-1 as-node-2 In as-master I have WildFly as domain host-master and the two nodes have WildFly as domain host-slave each starting an instance in the full-ha server group. From the as-master web console I can see the two nodes in the full-ha profile runtime and if I deploy a WAR it gets correctly started on both nodes. Now, what I'm trying to achieve is messaging between the two instances of the WAR, i.e. sending a message from a producer instance in as-node-1, consumers in all the nodes should receive the message. This is

I've built a cluster on Glassfish administred via SSH, where there are 2 instances. I deployed an application that shows the "Session id". This application has in the web.config: <distributable/> And in the sun-web.xml: <session-config> <cookie-properties> <property name="cookieDomain" value="compute.amazonaws.com"/> </cookie-properties> </session-config> I enabled "Availability" in Edit Application. But when I access the 2 web app versions I see different session ids. Can anyone help me? EDIT: As some users noticed, in EC2 is not supported multicast. A solution comes with Glassfish v3.1.2,