SIMETRID IS SUPPORTED ONLY WHEN ALL SYSTEMS IN THE SYSPLEX
ARE RUNNING ON THE SAME CPC AND ARE USING SIMETRID CONSISTENTLY
Explanation
This system tried to use a simulated external time
reference identifier (SIMETRID) in an unsupported or inconsistent
manner. This could mean one of the following:
- Systems running as a guest on a Virtual Machine (VM) system do
not all have CPUIDs that represent the same CPC, when VMCPUIDTOLERATION
is not requested.
- Systems running in a Processor Resource/Systems Manager™ (PR/SM™) environment
are not all on the same side of a physical CPC.
- Some systems are using SIMETRID and others are not.
- Systems have different TOD clock values. The
effective clock value for the LPAR is the time of the physical TOD
clock (the TOD for the CEC) with the LPAR EPOCH applied.
System action
The system issues message IXC420D,
or the system restarts XCF and issues message IXC207A to request
a new COUPLExx specification.
Operator response
Notify the system programmer.
System programmer response
To use SIMETRID in a sysplex, do one
of the following:
- Make sure that this system should be part of this sysplex. If
not, specify the COUPLExx parmlib member for the correct sysplex.
- If the systems are running on VM, make sure that the processor
identifiers (CPUIDs) of all the systems on the sysplex represent the
same machine if VMCPUIDTOLERATION is not requested. When VMCPUIDTOLERATION
is not requested, the VM systems must have their virtual CPUID information
defined so that they appear to be on the same physical side of the
same CPC. Alternately, if desired, request VMCPUIDTOLERATION by specifying
VPCPUIDTOLERATION(YES) in the COUPLExx parmlib member. When VMCPUIDTOLERATION
is requested, the VM systems may have disparate virtual CPUID information
defined, and still be allowed to participate in the same sysplex.
- If the systems are running in a PR/SM environment,
make sure all the systems in the sysplex are on the same side of a
physical CPC.
For any system to use SIMETRID, all the systems in the
sysplex must use SIMETRID and all the systems in the sysplex must
have the same TOD clock value.
If this system should not be
using SIMETRID, change the SIMETRID parmlib specification in the CLOCKxx
parmlib member.
Source
Cross System Coupling Facility (SCXCF)
Module
Routing code
Descriptor code