Specifications

Page D-4 Appendix D
From the AMOS prompt, you can type:
COMPAT COMPAT.DAT
RETURN
or you can add this same command into your system initialization command file.
If you simply enter the command:
COMPAT
RETURN
you will get a display showing the list of programs that have been selected for the
special cache control. Also, you will get some statistical information in the form of the
total number of CPU context switches which are non-cached, and the percentage of the
non-cached context switches that each of the selected programs caused. A display like
the one shown below, which has a very high percentage of non-cached CPU context
switches, would indicate that system performance is hindered, because very little use of
the instruction cache it taking place.
The following programs run with internal cache disabled:
STIC (active in 88.7% of total context switches, 99.6% of non-cached)
FAXUIT (active in 0.2% of total context switches, 0.3% of non-cached)
A total of 89.0% of context switches were non-cached
If you are having problems getting a certain software package to run on your
Roadrunner, try adding the program to the list of programs in the COMPAT.DAT file.
You may find the program will run with the instruction cache disabled.
PDI-00172-40, Rev. A05