FICO Xpress Optimization

Mosel distributed computing examples

All models in this directory need to be configured for your local architecture. The selected remote machines need to have a suitable version of Xpress installed and licensed (where compilation is done on the root node, the remote versions should be all the same as the version on the root node, but in all cases the nodes may be any platform/architecture supported by Xpress).

Before executing models on remote nodes, you need to start the server xprmsrv on all nodes you wish to use:
in a command line interpreter window type:
xprmsrv
or alternatively, under Windows, double click on the xprmsrv icon.

Running a single model remotely: Submodel, remote connection

Recursive remote files: Access to files on remote (parent or child) nodes


Type:	Programming
Rating:	3 (intermediate)
Description:	Cascade of recursive submodels in distributed architecture: The same model is compiled and run in a cascade of submodels on different machines/nodes. Compilation is local to the nodes, that is, nodes may use different versions of Xpress. From a given instance, data files at the parent and at the child node are accessed. This model requires write access on all machines that are used.
File(s):	remotefiles.mos

Approximating PI number: Recursive model execution, using event messages, search for available servers

Mandelbrot: Queued execution of remote models with result graphic


Type:	Programming
Rating:	5 (difficult)
Description:	This model implements a queued execution of remote models (modelmandelhttpsub.mos) with result graphics displayed in a web browser controlled by the root model mandelhttp.mos. On each node in the specified list we start K model instances. Each submodel instance is sent a rectangular area for which to calculate the pixel color values based on the Mandelbrot function f(z) = z^2 + c where z,c are complex numbers. The results are passed back via a file (located at the same place as this model, no write access to remote instances is required). Once the result has been displayed, the submodel is restarted for a new data set.
File(s):	mandelhttp.mos, mandelhttpsub.mos (submodel)
Data file(s):	mandelhttp.html, jquery-2.0.0.min.js

Comments or suggestions about the examples? Please e-mail support@fico.com