content_image/1009084.jpg
<img src='content_image/1009084.jpg'>

## D 

## Shared Memory Communications 

This appendix briefly describes the optional Shared Memory Communications (SMC) function that is implemented on IBM Z servers as Shared Memory Communications over Remote Direct Memory Access (SMC-R) and Shared Memory Communications - Direct Memory Access (SMC-D) of IBM z14, z13, and z13s servers. 

Note:  Throughout this chapter, “z14” refers to  IBM z14 Model M0x (Machine Type 3906) unless otherwise specified. 

This appendix includes the following topics: 

GLYPH<SM590000> D.1, “Overview” on page 476 

GLYPH<SM590000> D.2, “Shared Memory Communication over RDMA” on page 476 

GLYPH<SM590000> D.3, “Shared Memory Communications - Direct Memory Access” on page 489 

