Dynamic I/O Support For Infiniband And Ica Chpids; Simultaneous Multithreading - IBM z13s Technical Manual

InfiniBand coupling links
Support for HCA3-O
maximum distance of 150 meters (492 feet) is listed in Table 7-54.
Table 7-54 Minimum support requirements for coupling links over InfiniBand
Operating system
z/OS
z/VM
z/TPF
InfiniBand coupling links at an unrepeated distance of 10 km (6.2 miles)
Support for HCA3-O LR
unrepeated distance of 10 KM (6.2 miles) is listed in Table 7-55.
Table 7-55 Minimum support requirements for coupling links over InfiniBand at 10 km (6.2 miles)
Operating system
z/OS
z/VM

7.3.73 Dynamic I/O support for InfiniBand and ICA CHPIDs

This function refers exclusively to the z/VM dynamic I/O support of InfiniBand and ICA
coupling links. Support is available for the CIB and CS5 CHPID type in the z/VM dynamic
commands, including the change channel path dynamic I/O command. Specifying and
changing the system name when entering and leaving configuration mode are also
supported. z/VM does not use InfiniBand or ICA, and does not support the use of InfiniBand
or ICA coupling links by guests.
Table 7-56 lists the minimum support requirements for dynamic I/O support for InfiniBand
CHPIDs.
Table 7-56 Minimum support requirements for dynamic I/O support for InfiniBand CHPIDs
Operating system
z/VM

7.3.74 Simultaneous multithreading

SMT is the hardware capability to process up to two simultaneous threads in a single core,
sharing the resources of the superscalar core. This capability improves the system capacity
and the efficiency in the usage of the processor, increasing the overall throughput of the
system.
SMT is supported only by zIIP and IFL speciality engines on z13s, and must be used by the
operating system. An operating system with SMT support can be configured to dispatch work
3
HCA2-O is not supported on z13s.
4
HCA2-O is not supported on z13s.
3
(12xIFB) fanout that supports InfiniBand coupling links 12x at a
Support requirements
z/OS V1R12
z/VM V6R2 (dynamic I/O support for InfiniBand CHPIDs only;
coupling over InfiniBand is not supported for guest use.)
z/TPF V1R1
4
(1xIFB) fanout that supports InfiniBand coupling links 1x at an
Support requirements
z/OS V1R12
z/VM V6R2 (dynamic I/O support for InfiniBand CHPIDs only;
coupling over InfiniBand is not supported for guest use.)
Support requirements
z/VM V6R2
Chapter 7. Software support
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