Display the Current Domain Configuration (ldm)

This procedure describes how to display a compute node domain configuration using a series of ldm commands.

1. Log in as root on the compute node's control domain.
2. Identify which domains are Root Domains:

   Root Domains are identified by IOV in the STATUS column.

   In this example, ssccn3-dom2 and ssccn3-dom3 are Root Domains. The other domains are dedicated domains.

   # ldm list-io | grep BUS
   NAME                                       TYPE   BUS      DOMAIN    STATUS
   pci_32                                     BUS    pci_32   primary
   pci_33                                     BUS    pci_33   primary
   pci_34                                     BUS    pci_34   primary
   pci_35                                     BUS    pci_35   primary
   pci_36                                     BUS    pci_36   ssccn3-dom2 IOV
   pci_37                                     BUS    pci_37   ssccn3-dom2 IOV
   pci_38                                     BUS    pci_38   ssccn3-dom2 IOV
   pci_39                                     BUS    pci_39   ssccn3-dom2 IOV
   pci_40                                     BUS    pci_40   ssccn3-dom1
   pci_41                                     BUS    pci_41   ssccn3-dom1
   pci_42                                     BUS    pci_42   ssccn3-dom1
   pci_43                                     BUS    pci_43   ssccn3-dom1
   pci_44                                     BUS    pci_44   ssccn3-dom3 IOV
   pci_45                                     BUS    pci_45   ssccn3-dom3 IOV
   pci_46                                     BUS    pci_46   ssccn3-dom3 IOV
   pci_47                                     BUS    pci_47   ssccn3-dom3 IOV

3. View domains and resource allocation information.

   In this example, ssccn3-dom2 and ssccn3-dom3 are Root Domains (from Step 2). The resources listed for Root Domains only represent the resources that are reserved for the Root Domain itself. Parked resources are not displayed.

   # ldm list
   NAME             STATE      FLAGS   CONS    VCPU  MEMORY   UTIL  NORM  UPTIME
   primary          active     -n-cv-  UART    192   2095872M 0.1%  0.1%  12h 28m
   ssccn3-dom1      active     -n----  5001    192   2T       0.1%  0.1%  12h 25m
   ssccn3-dom2      active     -n----  5002    8     16G      0.1%  0.1%  2d 23h 34m
   ssccn3-dom3      active     -n--v-  5003    16    32G      0.1%  0.1%  2d 23h 34m

4. View the amount of parked resources.

   In this example, the first command line reports the number of cores in the logical CPU repository. The second command line reports the amount of memory in the memory repository.

   # ldm list-devices -p core | grep cid | wc -l
         45
    
    
   # ldm list-devices memory
   MEMORY
       PA                   SIZE
       0x100000000000       1008G
       0x180000000000       1T
       0x300000000000       1008G
       0x380000000000       1008G

Related Information

• osc-setcoremem Overview

• Supported Domain Configurations

• Plan CPU and Memory Allocations

• Display the Current Domain Configuration (osc-setcoremem)

• Change CPU/Memory Allocations (Socket Granularity)

• Change CPU/Memory Allocations (Core Granularity)

• Park Cores and Memory