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23

Typically, Mathematica contacts the license server every 2 minutes. If you have a license which supports a very large number of processes, that interval can grow (to help MathLM to scale better). It will never be more than 30 minutes. If three consecutive license checks fail, then Mathematica will instead revalidate the entire license file on what would ...


9

What you need to launch subkernels across several nodes on a HPC cluster is the following: Figure out how to request several compute nodes for the same job Find the names of the nodes that have been allocated for your job Find out how to launch subkernels on these nodes from within the main kernel All of these depend on the grid engine your cluster is ...


6

Thanks to @halirutan and @Szabolcs, I found a working solution by myself. Apparently it won't work with localhost on Windows7 but with 127.0.0.1. To sum up, I present the ssh-commands, so other users might gain something from this (use your own network names or IPs here): First connect through the firewall via ssh.server: ssh -L 16286:127.0.0.1:16286 ...


5

Computing Processes are the number of main kernels you can use at the same time. Therefore, you can have on the same computer two Mathematica sessions running and while one computation is running, you can use the other one to do something else. It has nothing to do with your license which is valid for only one computer. The probably easiest method if you ...


4

You question does basically not fit here, but I'm sure it is still one of the best places to ask. I think we shouldn't be too pedantic with the rules. Let me give you some advice, which will unfortunately only help you, if you can cooperate with your admin of the server: You have to ensure, that you can reach the license server over an IP, because this is ...


3

I'm also trying the run more subKernels from a main kernel on HPC. I usually apply an interaction job on the HPC and run math kernels on it, and then connect back to the front end on may laptop. My waiting time for the queue of the interactive job is very short so it is convenient for me to do the work in the interactive way. Here is how I did, it may not be ...


3

The 2 CONTROLLING processes effectively means you can run 2 front-ends at the same time. This might be, say, Mathematica 8 and Mathematica 9 on the same machine at the same time, or one copy of Mma 9 on your desktop and another on your laptop (if your License allows same: check with Wolfram). The COMPUTING processes (8) are the number of slaves / cores you ...


2

I had a similar issue some time ago: no information was obtainable online, I ended up going trough WRI's user portal. There is a support portal there that I used. I described my problem in the greatest detail and after a few working days I got a response. The email conversation which followed ended up with them giving me a new license that I could use on my ...


1

I've had to do this before. I've found that Wolfram Support is very helpful when it comes to these kinds of things. It will probably take a 5 minute chat with a support person. http://www.wolfram.com/support/contact/


1

Well, further experiments have shown that altering my code to: Needs["LightweightGridClient`"] Column[{ CloseKernels[], LaunchKernels[], ParallelEvaluate[$ProcessID], ParallelEvaluate[$MachineName], RemoteServicesAgents[] // ColumnForm}] Which gives me: appears to resolve the problem. This does not explain why the problem occurred or why it ...



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