At the command prompt, when you are in the OOMMF root
(The name of the Tcl shell, rendered here as tclsh, may
vary between systems.)
Alternatively, you may launch app/oommf/oommf.tcl using
whatever ``point and click'' interface is provided by your operating
This will bring up a small window labeled
mmLaunch. It will come up in background mode, so you may get
another prompt in your original window, even before the
mmLaunch window appears.
STEP 2: Gain access to other useful windows.
On mmLaunch window, check the localhost box,
causing a menu of user
account boxes to appear. Then check the box corresponding
to the account you want to compute on. This gives a menu of
mmProbEd: to grab/modify a problem
mmSolve2D: to control the solver
mmDisp: to display vector fields
mmGraph: to form x-y plots
mmDataTable: to display current values of variables
mmArchive: to auto-save vector field data (primitive)
Click on mmDisp, mmGraph, and/or
mmDataTable, depending on what form of output you
STEP 3: Load a problem.
On mmLaunch window, click on the mmProbEd button.
On mmProbEd window, make menu selection
File|Open... A Load MIF File dialog window
On this window:
Double click in the Path subwindow to change
directories. Several sample problems can be found in
the directory oommf/app/mmpe/examples.
To load a problem, double click on a *.mif file
(e.g., prob1.mif) from the list above the Filter:
Modify the problem as desired by clicking on buttons from
the main mmProbEd window (e.g., Material
Parameters), and fill out the pop-up forms. A
completely new problem may be defined this way.
STEP 4: Initialize the solver.
On mmLaunch window, click on the mmSolve2D button
to launch an instance of the program mmSolve2D.
Wait for the new solver instance to appear in the
Threads column in the mmLaunch window.
Check the box next to the mmSolve2D entry in the
Threads column. A window containing an mmSolve2D
interface will appear.
On mmSolve2D window:
Check Problem Description under Inputs.
Check mmProbEd under Source Threads.
Wait for more buttons to appear.
Check Scheduled Outputs.
For each desired output (TotalField, Magnetization,
and/or DataTable), specify the frequency of update:
Check desired output.
This will exhibit the possible output destinations in
Destination Threads. Output applications such
as mmDisp, mmGraph, and/or mmDataTable
must be running to appear in this list.
Check the box next to the desired Destination Thread.
This will exhibit Schedule options.
Choose a schedule:
Iteration: fill in number and check the box.
Equilibrium: fill in number and check the box.
Interactive: whenever you click corresponding
Interactive output button.
STEP 5: Start the calculation.
On the mmSolve2D window, start the calculation with
Run or Relax.
If you requested mmDataTable output, check the boxes for the
desired quantities on the mmDataTable window under the
Data menu, so that they appear and are updated as requested in
Similarly, check the box for the desired X-Axis and Y-Axis
variables on the mmGraph window(s) under the X-Axis
and Y-Axis menus.
STEP 6: Saving results.
Vector field data (magnetization and effective field) may be
interactively written to disk using mmDisp, or may be
automatically saved via scheduled output to mmArchive.
For example, to save each equilibrium magnetization state,
start up an instance of mmArchive and select the Equilibrium check box for mmArchive on the
Magnetization schedule in the solver. This may be done
before starting the calculation.
DataTable data may be saved using mmGraph.
Schedule output from the solver to mmGraph as desired,
and use either the interactive or automated save functionality
You can setup the solver data scheduling before the
calculation is started, but must wait for the first data point
to configure mmGraph before saving any data. As a
workaround, you may configure mmGraph by sending it the
initial solver state interactively, and then use the
Options|clear Data menu item in mmGraph to
remove the initializing data point. Alternatively, you
may send scheduled output from the solver to mmArchive,
which will automatically save all the data it receives.
STEP 7: Perform midcourse controls as desired.
On the mmSolve2D window, buttons can stop and restart the
Reset: Return to beginning of problem.
LoadProblem: Restart with a new problem.
Run: Apply a sequence of fields until all complete.
Relax: Apply a single field and run the ODE to equilibrium.
Pause: Click anytime to stop the solver. Restart
with Run or Relax.
Field-: Apply the previous field again.
Field+: Apply the next field in the list.
Output options can be changed and new output windows opened.
STEP 8: Exit OOMMF.
On the mmSolve2D window, terminate the simulation with
Terminate each mmArchive instance by hitting
the Exit button in its user interface window.
Use the File|Exit menu on each remaining window to