Large - IBM z13s Technical Manual

Communications over Remote Direct Memory Access (SMC-R) in z/OS V2R1 or later. It is
transparent to applications and can be used for LPAR-to-LPAR communication on a single
z13s or for server-to-server communication in a multiple CPC environment.
z/OS V2R1 or later with PTFs provides support for the SMC-R protocol. It does not roll back
to previous z/OS releases. z/OS V1R12 and z/OS V1R13 with PTFs provide only
compatibility support.
IBM is working with its Linux distribution partners to include support in future Linux on
z Systems distribution releases.
Table 7-9 lists the minimum support requirements for 10GbE RoCE Express.
Table 7-9 Minimum support requirements for RoCE Express
Operating system
z/OS
z/VM
Linux on z Systems
a. See SUSE website:
For more information, see Appendix D, "Shared Memory Communications" on page 475.
7.3.8 Large page support
In addition to the existing 1-MB large pages, 4-KB pages, and page frames, z13s supports
pageable 1-MB large pages, large pages that are 2 GB, and large page frames. For more
information, see "Large page support" on page 114.
Table 7-10 lists the support requirements for 1-MB large pages.
Table 7-10 Minimum support requirements for 1-MB large page
Operating system
z/OS
z/VM
z/VSE
Linux on z Systems
a. Web deliverable and PTFs are required, plus the Flash Express hardware feature.
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IBM z13s Technical Guide
Support requirements
z/OS V2R1 with supporting PTFs (SPE for IBM VTAM®, TCP/IP, and IOS).
The IOS PTF is a minor change to allow greater than 256 (xFF) PFIDs for
RoCE.
z/VM V6.3 with supporting PTFs. The z/VM V6.3 SPE for base PCIe support
is required. When running z/OS as a guest z/OS, APAR OA43256 is required
for RoCE, and APARs OA43256 and OA44482 are required for zEDC. A
z/VM web page that details the prerequisites for using RoCE and zEDC in a
guest can be found at following location:
http://www.vm.ibm.com/zvm630/apars.html
Currently limited to experimental support in these operating systems:
SUSE Linux Enterprise Server 12 SP1
SUSE Linux Enterprise Server 11 SP3 with the latest maintenance.
RHEL 7.0.
https://www.suse.com/releasenotes/x86_64/SUSE-SLES/12-SP1/
Support requirements
z/OS V1R11
a
z/OS V1R13 for
Not supported, and not available to guests
z/VSE V5R1: Supported for data spaces
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise Server 11
Red Hat RHEL 7
Red Hat RHEL 6
a
pageable
1-MB large pages