I want to run MATLAB in background in Linux ( On a server ) So that I am able to interect with this running job i. e I am able to call a function and display its output on the screen .

I know that I can run matlab in background using nohup . But then how can I interact with this matlab job using some shell script / php script to give inputs to the running programming and take output from it.

Answer 1

[Walter Roberson]

http://www.mathworks.com/help/matlab/matlab_external/using-matlab-engine.html

[Anirudh Goyal]

Perhaps Not . I want that an array be loaded ( this is of approx 4 GB in size ) and the user can query the array or use the information stored in the array . As the array loaded will act as a background matlab running process while the user through web application can query the array .

[Walter Roberson]

engEvalStr allows you to send a "load" (or similar) to the engine.

Perhaps the issue is that you want the same background process to be able to serve multiple web clients (not necessarily simultaneously), and so must live in-between invocations?

You might want to look at http://www.mathworks.com/products/matlab-production-server/

[Anirudh Goyal]

Yes , I want the same background process to be able to serve multiple queries precisely . is there any way out except using Matlab Production Server ?

[Walter Roberson]

Sure. But you will need to create the equivalent of the Request Server (even if it only has one worker). You would use php or the like on your web server to send requests to the request server (probably via TCP), which would translate them into calls to its instance of the MATLAB Engine. If the calls start to get complex then you will need to watch out for interference between the engine variables used for the different requests.