system
- Tim Sneddon (Unlicensed)
Syntax
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Description
The system configuration object is used to control the number of CPUs as well as the system identification and marketing values provided by the emulated Alpha system. The following tables describes how these values correspond to $GETSYI item codes.
| System Object Member | $GETSYI Item Code | Description |
|---|---|---|
| cpus | SYI$_AVAILCPU_CNT | The number of CPUs in the Alpha. |
| hw_name | SYI$_HW_NAME | The Alpha model name string. |
| smm | SYI$_HW_MODEL | An integer that indicates the Alpha hardware model type (System Marketing Model). |
The system object and its members are optional. If not defined cpu-count defaults to 1. The maximum number of virtual CPUs can be calculated by subtracting the number of host CPUs from those reserved for I/O processing. The number of host CPUs reserved for I/O processing can be configured in the graphical user interface. However, the maximum CPU count is still limited by the virtual Alpha system model.
Occasionally, when moving from a native to virtual Alpha system it is not possible to create an exact configuration match. A number of third-party software products can often license against the specific hardware model and it is necessary to adjust these values to allow these products to continue to run.
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