Park Cores and Memory
This is an example of a plan that reduces resources for primary, ssccn2-dom2, ssccn2-dom4,
so that the resources are parked (unallocated). The parked resources can later be used by I/O
Domains.
This table shows the allocation plan (see “Plan CPU and Memory Allocations” on page 175).
Domain Domain Type Cores Before Cores
After
Memory
Before (GB)
Memory
After (GB)
primary
Dedicated 32 16 512 256
ssccn2-dom1
Dedicated 16 16 256 256
ssccn2-dom2
Dedicated 16 8 256 64
ssccn2-dom3
Dedicated 16 16 256 256
ssccn2-dom4
Dedicated 16 4 256 64
ssccn2-dom5
Root n/a n/a n/a n/a
Unallocated Resources 28 64 448 1088
Total Resources 124 124 1984 1984
1.
Log in as superuser on the compute node's control domain.
2.
Activate any inactive domains using the ldm bind command.
The tool does not continue if any inactive domains are present.
3.
Run osc-setcoremem to change resource allocations.
In this example, some resources are left unallocated which parks them.
Respond when prompted. Press Enter to select the default value.
# /opt/oracle.supercluster/bin/osc-setcoremem
osc-setcoremem
v1.0 built on Oct 29 2014 10:21:05
Current Configuration: Full-Rack T5-8 SuperCluster
+-------------------------+-------+--------+-----------+--- MINIMUM ----+
| DOMAIN | CORES | MEM_GB | TYPE | CORES | MEM_GB |
+-------------------------+-------+--------+-----------+-------+--------+
| primary | 32 | 512 | Dedicated | 9 | 64 |
| ssccn2-dom1 | 16 | 256 | Dedicated | 4 | 32 |
| ssccn2-dom2 | 16 | 256 | Dedicated | 4 | 32 |
Maintaining the System 191
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