OpenVMS Alpha Version 7.1 and later contains system parameters
that control the operation of bus-addressable pool (BAP).
The CIPCA, CIXCD, KFMSB, and Qlogic ISP 1020 (KZPSM-AA) adapters
are some of the adapters that use bus-addressable pool to improve
performance. BAP is a non-paged dynamic, physical-address-filtered memory
pool used to overcome I/O bus and 32-bit adapter physical addressing
limits.
The following table lists the BAP system parameters and their
default values:
System
Parameter
Default Value
NPAG_BAP_MIN
0
NPAG_BAP_MAX
0
NPAG_BAP_MIN_PA
0
NPAG_BAP_MAX_PA
-1
The default values of these parameters allow the system to
boot with any configuration. When AUTOGEN is run on a configured
system, it resets these parameters to values that should enhance
performance for the current system configuration.
If this is an upgrade of OpenVMS, or if the system fails to
boot after a hardware change and displays a message that refers
to incorrect BAP parameters, HP recommends that you perform the
following steps:
To begin the
conversational boot, use the BOOT command in the following format:
BOOT -FLAGS 0,1 [device-name]
For device-name, substitute the device
name of your system disk drive from which you want to boot. For example,
if the system disk has a device name of DKA400, enter the following
command and press Return:
This should allow the system
to boot. Once completed, enter the following command:
$ RUN SYS$SYSTEM:AGEN$FEEDBACK.EXE
The command entered in the
preceding step creates a file that will contain the BAP values for
the system in its current configuration. To see what they are, enter
the following command (the BAP parameters in AGEN$FEEDBACK.DAT do
not include the NPAG_ prefix):
$ SEARCH SYS$SYSTEM:AGEN$FEEDBACK.DAT BAP
Check MODPARAMS.DAT for any
hardcoded BAP values by entering the following command:
$ SEARCH SYS$SYSTEM:MODPARAMS.DAT BAP
If any BAP parameters are defined in MODPARAMS.DAT,
HP strongly recommends removing them. Their presence in MODPARAMS.DAT could
be the source of the current boot problem or might be a source of
one in the future if a change is made to the adapter card configuration
in the system.
Run AUTOGEN by entering the
following command:
$@SYS$UPDATE:AUTOGEN GETDATA TESTFILES NOFEEDBACK
After AUTOGEN completes,
display or print the SYS$SYSTEM:AGEN$PARAMS.REPORT file and review
it. This file lists changes being made to SYSGEN parameters or changes
that AUTOGEN wanted to make but could not because of a hardcoded
or minimum value that was specified in MODPARAMS.DAT.
If other changes need to
be made to MODPARAMS.DAT based on a review of the AGEN$PARAMS.REPORT
file, make them now and then resume at step 6.
Once you are satisfied with
the parameter settings, enter the following AUTOGEN command: