Magic Commands

The Jumper Wrapper Kernel provides its own magic commands for kernel management, plus full access to jumper-extension magic commands for performance monitoring.

Wrapper Magic Commands

%list_kernels

Lists all available Jupyter kernels that can be wrapped.

%list_kernels

Output:

Available Jupyter Kernels:
--------------------------------------------------
  python3: Python 3 (ipykernel) (python)
  ir: R (r)
  julia-1.9: Julia 1.9 (julia)
--------------------------------------------------
Currently wrapped kernel: python3

%wrap_kernel

Wraps an existing Jupyter kernel. All subsequent code (except local magic commands) will be forwarded to this kernel.

Basic usage:

%wrap_kernel python3

With permanent kernel spec:

%wrap_kernel ir --save jumper-r

This creates a new kernel spec jumper-r that automatically wraps the R kernel on startup.

Jumper Extension Commands

All jumper-extension magic commands are available and executed locally:

Command	Description
%perfmonitor_start [interval]	Start performance monitoring
%perfmonitor_stop	Stop performance monitoring
%perfmonitor_perfreport	View performance report
%perfmonitor_plot	Plot performance data
%cell_history	View cell execution history

For complete documentation on jumper-extension commands, see the jumper-extension documentation.

Command Routing

The kernel automatically routes commands:

• Local execution: Wrapper magics and jumper-extension magics
• Forwarded to wrapped kernel: All other code

This routing is determined by analyzing the cell content before execution.