Parallelization in Mathematica uses the hub-and-spoke model in which a controlling kernel manages a number of subordinate kernels (subkernels). Remote computers that have Mathematica installed can provide additional subkernels beyond the local subkernels.
A remote computer that provides subkernels is considered a host, while the computer running the controlling kernel is considered the client. If the host and client computers are both running a Linux operating system, then Mathematica can use SSH to connect with remote Wolfram kernels.
If the two computers are not both running a Linux operating system, then we recommend using the gridMathematica Server/Lightweight Grid Manager combination product to access remote kernels.
- Set up passwordless private/public key pairs between the host and client computers. Please contact your local System Administrator for help, if necessary.
- Start Mathematica on the client computer.
- Select the Evaluation ► Parallel Kernel Configuration menu item. The Preferences menu opens with the Parallel tab selected.
- Select the Remote Kernels tab.
- Click the Enable Remote Kernels button.
- Click “Add Host” to add a new remote connection.
- In the Hostname field in the right panel, input the Hostname of the remote computer. Press Enter to confirm the change.
- Check the Enable box and set the number of kernels you wish to use. Do not exceed the CPU core and licensing limits on the host.
- If the username on the host and the client differ:
- Check the “Use custom launch command” box.
- Replace the “-l `3` `1`” with username@hostname, where username is the user’s login on the host machine.
- Press Enter to confirm the change.
- Verify the kernel configuration by evaluating $ConfiguredKernels.
- Close the Preferences menu.
The remote kernel configuration is now complete. From a Mathematica notebook, using the LaunchKernels command, or any other parallel functionality, will now include the configured gridMathematica kernels in parallel computations.