cluster-computing

问题 I am starting to use the package called visNetwork and I feel like it has a ton of potential for User-Interface use in the future. There are few things that I am having trouble with though. I have created an igraph and have also applied a clustering algorithm to that specifically the fastgreedy algorithm. Example Code Provided: B = matrix( c(1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 47, 3, 0, 3, 0, 1, 10, 13, 5, 0, 3, 19, 0, 1, 0, 1, 7, 3, 1, 0, 0, 0, 3, 0, 0, 0, 0, 0, 0, 0, 3, 1, 0, 32, 0, 0, 3, 2, 1

问题 I have coded a program in C using MPI wherein the struct variable is to be sent in a ring fashion to the processes and, based on the value received from that variable, the work for that particular process is assigned. The problem is I need to know how to to send a struct variable in the MPI_Send() function as it is giving INVALID DATATYPE at the runtime , Consider the following example struct info{ int ne, n, u, v, process, min, strip, mincost, b; } stat; MPI_Send(&stat,sizeof(stat),sizeof

问题 I've realized that when running Hadoop with Python code, either the mapper or reducer (not sure which) is sorting my output before it's printed out by reducer.py . Currently it seems to be sorted alphanumerically. I am wondering if there is a way to completely disable this. I would like the output of the program based off of the order in which it's printed from mapper.py . I've found answers in Java but none for Python. Would I need to modify mapper.py or perhaps the command line arguments?

问题 I need to run thousands* of models on 15 machines (each of 4 cores), all Windows. I started to learn parallel , snow and snowfall packages and read a bunch of intro's, but they mainly focus on the setup of the master. There is only a little information on how to set up the worker (slave) nodes on Windows. The information is often contradictory: some say that SOCK cluster is practically the easiest way to go, others claim that SOCK cluster setup is complicated on Windows (sshd setup) and the

问题 I would like to connect to a clustered Oracle database described by this TNS: MYDB= (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = host1)(PORT = 41521)) (ADDRESS = (PROTOCOL = TCP)(HOST = host2)(PORT = 41521)) (LOAD_BALANCE = yes) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME= PDSALPO) ) ) I connect normally from my application to non-clustered Oracle using the following configuration: <group name="jdbc"> <prop name="url">jdbc:oracle:thin:@host1:41521:PDSALPO</prop> <prop name=

问题 I would like to run a script when all of the jobs that I have sent to a server are done. for example, I send ssh server "for i in config*; do qsub ./run 1 $i; done" And I get back a list of the jobs that were started. I would like to automatically start another script on the server to process the output from these jobs once all are completed. I would appreciate any advice that would help me avoid the following inelegant solution: If I save each of the 1000 job id's from the above call in a

问题 Can you tell me what is the use of jupyter cluster. I created jupyter cluster,and established its connection.But still I'm confused,how to use this cluster effectively? Thank you 回答1: With Jupyter Notebook cluster, you can run notebook on the local machine and connect to the notebook on the cluster by setting the appropriate port number. Example code: Go to Server using ssh username@ip_address to server. Set up the port number for running notebook. On remote terminal run jupyter notebook --no

问题 I want to create a cluster of node.js server in order to support high concurrency, for a chat rooms application. I need to be able to share information between all nodes. I am trying to find out what would be the best way to keep all the servers in-sync. I want as much flexibility as possible in the shared object, as I plan to add more features in the future. So far, I have 2 solutions in mind: Subscribe to NoSQL key (for example redis publish-subscribe) Nodes update each other using sockets.

问题 I'm trying to build nodejs application which will take advantage of multicore machines ( a.k.a. clustering ) and I got a question about sessions. My code looks like this: var cluster = exports.cluster = require('cluster'); var numCPUs = require('os').cpus().length; if (cluster.isMaster) { for (var i = 0; i < numCPUs; i++) { cluster.fork(); } cluster.on('exit', function(worker, code, signal) { console.log('worker ' + worker.process.pid + ' died. Trying to respawn...'); cluster.fork(); }); }

问题 I'm trying to build nodejs application which will take advantage of multicore machines ( a.k.a. clustering ) and I got a question about sessions. My code looks like this: var cluster = exports.cluster = require('cluster'); var numCPUs = require('os').cpus().length; if (cluster.isMaster) { for (var i = 0; i < numCPUs; i++) { cluster.fork(); } cluster.on('exit', function(worker, code, signal) { console.log('worker ' + worker.process.pid + ' died. Trying to respawn...'); cluster.fork(); }); }