This osc-setcoremem feature was introduced in SuperCluster software version 2.4.
The osc-setcoremem simulator runs simulations to view possible configurations to determine the best way to configure CPU and memory resources. The simulation runs only on the hardware and does not permanently change the CPU or memory resources.
You can run the simulator with any of these configurations:
No configuration – You must generate a base configuration file using the –p and –c options or the –g option. For instructions, see Run a Simulation.
A base configuration – You can return to the base configuration any time with the –R option. For instructions, see Reset the CPU/Memory Configuration.
A random configuration – You might have updated the base configuration or some other configuration. For example, you reconfigured the domains in a simulated environment.
For more information on command line options, see Display osc-setcoremem Help.
Use the osc-setcoremem simulator for these types of scenarios:
Move from a base configuration to a desired configuration – Run the osc-setcoremem simulator once to view the desired configuration in a virtual environment. When you are ready to make the changes, run the osc-setcoremem command. See Using the osc-setcoremem Command.
Move from a current configuration to a new configuration – You must run the osc-setcoremem simulator at least two times. The first time simulates the move from a base configuration to the current configuration. The second time simulates the move from the current configuration to the desired configuration. After viewing the changes in the virtual environment, run the osc-setcoremem command to make the changes.
For example, if you have a modified configuration on a live SuperCluster system, and you plan to move to a different custom configuration, use the osc-setcoremem simulator to see what is possible. The simulator cannot start from a random configuration, so you must first run the simulator to start with the base configuration and provide changes to emulate your current custom domain configuration. Then run the simulator again and start with the virtual configuration that matches your current configuration and proceed with different simulations. After viewing the changes in the virtual environment, run the osc-setcoremem command to make the changes.
This section covers the following topics: