Oracle SuperCluster T5-8, Owner'S Manual

Page: 182 / 356

Change CPU/Memory Allocations (Socket Granularity)
Change CPU/Memory Allocations (Socket
Granularity)
Perform this procedure on each compute node to change CPU and memory resource allocation
at the socket granularity level.
Note -
To find out if you can perform this procedure, see “Supported Domain
Configurations” on page 174 .
The tool makes these changes:
■
Automatically detects Root Domains.
■
Calculates the minimum and maximum resources for all domains, and only enables you to
select valid quantities.
■
Modifies domain resources according to the choices you make.
■
Automatically assigns memory capacity in the same proportion to CPU resources.
■
(If needed) Stops nonprimary domains.
■
(If needed) Reboots the primary domain with new resources .
■
(If needed) Brings up nonprimary domains with new resources.
The examples in this procedure show a SuperCluster T5-8 Full-Rack compute node that has six
domains. The concepts in this procedure also apply to other SuperCluster models.
In this example, one socket and 256 GB memory are removed from the
primary
domain and
allocated to
ssccn2-dom2
.
This table shows the allocation plan (see “Plan CPU and Memory Allocations” on page 175 ).
Domain Domain Type Sockets
Before
Sockets
After
Memory
Before (GB)
Memory After
(GB)
primary
Dedicated 2 1 512 256
ssccn2-dom1
Dedicated 1 1 256 256
ssccn2-dom2
Dedicated 1 2 256 512
ssccn2-dom3
Dedicated 1 1 256 256
ssccn2-dom4
Dedicated 1 1 256 256
ssccn2-dom5
Root n/a n/a n/a n/a
Unallocated 28 28 448 448
182 Oracle SuperCluster T5-8 Owner's Guide • May 2016