For instructions on how to change the kernel mode using the graphical interface, see Mathematical Engine.

Note: Command-line instructions are provided in the following sections, which describe each mode and command-line option.

Run Maple using parallel kernels if you want variable assignments in one worksheet to work independently of those defined in other open worksheets. The percent character, %, refers to the result of the last computation by the kernel associated with the current worksheet.

Append -km p to the operating system command line that loads Maple. This step is normally unnecessary because Maple runs using parallel kernels by default.

Run Maple using a shared kernel if you want variable assignments defined in one worksheet to apply to all open worksheets. In addition, the percent character, %, refers to the result of the last computation by the kernel regardless of the worksheet in which you performed the command.

Append -km s to the operating system command line that loads Maple.

Run Maple using a mixed kernel if you want some worksheets to share a kernel and others to run using parallel kernels. Those sharing a kernel have the behavior described in Start Maple Using a Shared Kernel. Those using a parallel kernel have the behavior described in Start Maple Using Parallel Kernels.

Each time you open a new instance of Maple, a dialog will appear in which you can specify the kernel, either New or KernelConnection: Server # for all kernels that are currently active.

Append -km q to the operating system command line that loads Maple.

Documents opened from the MapleCloud are always run on their own, parallel kernel, even in shared kernel mode.  For information on opening worksheets in the MapleCloud, see Opening Shared MapleCloud Documents.  For more information on security settings for the MapleCloud, see Options Dialog - Security Tab.