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AMD SimNow Simulator 4.4.4 User Manual

Page 188

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AMD Confidential

User Manual

September 12

h

, 2008

176

Chapter 15: Frequently Asked Questions (FAQ)

connection ports. Once the devices are connected, a user would then need to load a
product ID file so that the simulated devices would represent a real and planned piece of
hardware. In summary, building a Quad-core node in SimNow could take as many as 14
individual steps, and these steps would need to be repeated each time a processor node is
to be added.

A device group can both simplify adding a quad-core node, and present the user with a
hierarchical view. So we will give some examples with quad-core processor nodes.

A device group is not required to specify archive data for its child devices. When such a
known device group is instantiated as a created device, it simply lets its children use their
own default and initial configuration state. We can create an abstract or generic “4 core
Node
” device group that does not represent a particular hardware implementation (just
like a non-configured “Dimm Bank” does not represent a particular hardware
implementation, until it is configured).

A device group can optionally specify initial and default archive data (device state) for
each of its child devices. A device group with five children could specify archive data for
0, 1, 2, 3, 4, or all 5 children. We could have an “AMD 4-core CPU xxxx” that specifies
archive data for all five of its children (configured with the (theoretical) product ID file
amd-xxxx.id”).