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--- software:mathematica:kernels [2016/03/02 16:03] – created dreger
+++ software:mathematica:kernels [2016/03/02 17:56] (current) – dreger
@@ Line 1: / Line 1: @@
 ====== Running additional Mathematica Kernels from a single Frontend ======
-When working with //Mathematica// notebooks using the graphical interface (Frontend), you can add additional kernels running on remote hosts to make use of additional computation power or memory. For instance, if your local workplace computer has not enough RAM for a large computation you can send this job to a larger machine that can handle it. In order to do so you first have to add these remote kernels to your frontend.
+When working with //Mathematica// notebooks using the graphical interface (Frontend), you can add additional kernels running on remote hosts to make use of additional computation power or memory. For instance, if your local workplace computer has not enough RAM for a large computation you can send this job to a larger machine that can handle it. In order to do so you first have to add these remote kernels to your frontend. To do so follow these steps:
+  - choose **Evaluation -> Kernel Configuration Options...** from the menu
+  - click **Add**
+  - give some name for the kernel, e.g. the hostname of the machine the kernel will be running on
+  - click the checkbox for **Append name to In/Out prompts**
+While these **Basic Options** might work already, there will most likely be a problem with the ssh connection, namely that it asks you every time for your password or passphrase. The reason for this is that Mathematica is using its own Java based ssh client which apparently does not know how to talk to an existing ssh-agent. In order to fix this, do the following:
+  - select **Advanced Options**
+  - change **Shell command to launch kernel** to:\\ ''LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libcrypto.so ssh example.physik.fu-berlin.de wolfram -wstp -LinkMode Connect -LinkProtocol TCPIP -LinkName "`linkname`" -LinkHost `ipaddress`''
+{{:software:mathematica:mma-remote-kernel01.png?nolink|}}
+Make sure to replace ''example.physik.fu-berlin.de'' by the actual hostname you want to use. This setup has successfully been tested between two Debian/Jessie hosts running //Mathematica// 10.3.1.
+In order to use this remote kernel you just need to select it from **Evaluation -> Notebook's Kernel** menu. Cells that are calculated on the remote host should have a label in front:
+{{:software:mathematica:mma-remote-kernel02.png?nolink|}}