The Kernel is the back-end application thread that does the actual evaluation of all non-graphical expressions. It can be accessed directly through the console but is more commonly working behind the scenes to power the Notebook Interface. Multiple Kernels may be run for parallel computation.

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In .NET/Link, how do I not open multiple kernels?

I'm writing an ASP.NET page intended for multiple users. On the backend we have datatypes that are primarily mathematical, and interact with Mathematica for string-to-double evaluations, among ...
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83 views

MathKernel with `-noprompt` hangs indefinitely when converting simple TeX expression

If I enter MathKernel -noprompt -run 'ToExpression["1", TeXForm]; Exit[]' the kernel hangs, apparently while running TeX.exe ...
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120 views

Context “Unique to This Notebook” makes variables black even if they're not defined?

I'm trying to use this technique to keep variables separated between different notebooks. It seems to be working fine, except that variables turn black as soon as they are evaluated — any ideas why ...
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77 views

Launching Remote Kernels takes a lot of time

I recently played around with establishing a remote kernel setup without using mathematica grid. To do this I use the LaunchKernels[] command and ...
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36 views

Behavior of $PreRead in Kernel

I am interested in making a simple accounting style line calculator that allows me to interact with it something like this: ...
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121 views

Remote kernel shuts down after several seconds

I have Mathematica 9 installed on two Windows Server 2008 R2 machines. Now i want to try using one of them as a frontend with local kernels and the other one for remote kernels. OpenSSH 6.5 for ...
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47 views

Clean webMathematica Kernel

On my webMathematica server, certain input values are being saved between page loads on different computers. I assume this is because the kernel is not clearing the values after it finishes loading a ...
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229 views

Runaway MathKernel!

I was running a simulation and everything went south (my fault, stupid coding error). So I quit the kernel. Everything was running very slowly, as if it were doing some kind of large calculation. ...
2
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130 views

Why FrontEnd`KernelExecute doesn't work in KeyEventTranslations.tr?

Which commands can you put in KeyEventTranslations.tr ? There is an extensive list of FrontEndTokens, but what else can you use? Why something like this doesn't ...
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262 views

Threads vs Cores: How many kernels need to launch in parallel Mathematica?

I have a dual-core intel machine. I would like to test how many parallel local kernels should be launch to get the optimized performance. Knowing that the HyperThreading technology of Intel could run ...
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299 views

Configuring Remote Kernel via terminal in Linux

There's a server at work, which I would like to use as a remote kernel. I have access to it via terminal (server is running Red Hat, my client Windows 7). I don't know if the kernel is set up or not, ...
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45 views

Main Kernel in Mathematica

I would like to copy some parameter from the main Kernel of Mathematica to the parallel kernels available. So I'm running now a command like: ...
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28 views

Use remote kernel on debian from win8

I spend almost two week to figure out how mma could use a remote kernel. The following is my results: The basic environment is: mma9.0.1 on win8 as my host (local machine); mma9.0.1 on Deiban 7 as a ...
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22 views

KernelObject::rdead on local kernels

I'm trying to parallelize some tasks which involve fetching data from a URL and processing it. This is the code: ...
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25 views

Multiple scripts run using same kernel

I have an external program that calls Mathematica scripts upon certain events. Each script requires a large Mathematica library to load (takes a while). Is there some way to run an initial script ...
0
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60 views

Save open Mathematica Notebook from command line or second Notebook to avoid data loss

I was executing a long Mathematica Notebook over night. The Mathematica instance is running on a Linux workstation (in a vnc server session to be precise). Now I cannot access this session anymore, ...
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92 views

Keyboard issues with Mathematica 9.0.1 for Linux

After working for a while with Manipulate function and increasing the number of variables to be manipulated, keyboard stops working properly in the Notebook. It ...
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46 views

CreateDocument using a specific Evaluator (Kernel)

I was trying to build a button to create a new document that contained a dynamicaly changing table. In the parent notebook i am using another kernel - not the usual "Local". The problem is that in the ...
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77 views

running Mathematica installed in Windows, from Linux

Both the operating systems are installed side by side on my computer. The Windows hard drive mounts as an external hard drive on running Linux and I can access all the Windows files, as you'd know. ...
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142 views

Licence and number of controlling kernels

I'm trying to understand the differences between controlling kernels and subkernels. I created 3 local kernels (kernel configuration options > add), each using a maximum of 8 local subkernels. ...