Problem overwriting init.m file
- To: mathgroup at smc.vnet.net
- Subject: [mg111689] Problem overwriting init.m file
- From: Bob F <deepyogurt at gmail.com>
- Date: Tue, 10 Aug 2010 03:56:43 -0400 (EDT)
On March 1, 2006, Arnoud Buzing made a posting about creating kernels. I tried it out as I was having a problem creating a remote kernel (the post follows below) and lost the contents of my init.m file - much to my surprise and disappointment. Why would this code cause the init.m file to be replaced (really what was lost was the kernel definitions I had already created - none of them were named "Remote", but of course I did have a local that I didn't care about. Any suggestions about how to prevent Mathematica from overwriting this important file, that might have taken many hours to tweak to get things just how I like to have them set up? Why no confirmation before overwriting this important file? Seems like a good idea to me. -Bob Freeman On Mar 1 2006, 3:25 am, Arnoud Buzing <arno... at wolfram.com> wrote: > Chris Chiasson wrote: > > Dear MathGroup, > > > In trying to set up a remote kernel connection to a linux machine, I am > > wondering the following about the Kernel configuration dialog box. > > > It uses java -jarmathssh, butmathsshdoesn't exist in my Mathematica > > installation directory. I do have C:\Program Files\Wolfram > > Research\Mathematica\5.2\SystemFiles\Java\WolframSSH.jar > > > Why is it trying to use a program that doesn't exist? > > Chris, > > It actually uses `java` -jar `mathssh` ... > > The `java` and `mathssh` are replaced by the frontend with the appropriat= e > values for your machine. Other special `` variables used by the frontend > are `username`, `linkname` and `ipaddress`. They are also replaced by the > frontend at the time the link to the kernel is made. > > You can set up remote kernels in two ways, via the frontend and via the > kernel. To set up remote kernels via the kernel, you need to set/change > the EvaluatorNames option for the $FrontEnd object. First personalize > these two variables: > > remote="machine.domain.com"; > kernel="/your/path/to/math"; > > Then evaluate: > > SetOptions[ > $FrontEnd, > EvaluatorNames->{ > "Local"->{}, > "Remote"->{ > "MLOpenArguments"-> > "-LinkMode Listen -LinkProtocol TCPIP -LinkOptions MLDontInter= act", > "LoginScript"-> > "\"`java`\" -jar \"`mathssh`\""<> > " `username`@"<>remote<> > " "<>kernel<> > " -mathlink"<> > " -LinkMode Connect"<> > " -LinkProtocol TCPIP"<> > " -LinkName \"`linkname`\""<> > " -LinkHost `ipaddress`" > } > } > ] > > Then test by creating a notebook using the new 'Remote' kernel: > > NotebookCreate[Evaluator->"Remote"] > > In the new notebook evaluate: $MachineName > > You may see an SSH dialog come up to confirm if you want to connect. > Click Yes if you want to connect. > > After a few moments the name of the remote machine should appear for Out[= 1]. > > If your Windows user name and UNIX user name do not match, you may want > to explicitly replace `username` in the above code with your actual UNIX = username. > > Note that, unless you are setting up many remote kernels programmatically= , it is > easier to just use the Kernel -> Kernel Configuration Options ... dialog. > > First click the 'Add' button, the check the 'Remote Machine' radio button= under > the basic options and fill out the user name, remote machine name and the= full > path to the kernel on the remote machine. Then click OK (twice) and test = it by > setting the notebook's kernel to the 'New Kernel'. > > --- > Arnoud