View and Change the Status of Nodes

Use the xtprocadmin command on a service node to view the status of components of a booted system in the processor table of the SDB. The command enables the system administrator to retrieve or set the processing mode (interactive or batch) of specified nodes. The administrator can display the state (up, down, admindown, route, or unavailable) of the selected components, if needed. The administrator can also allocate processor slots or set nodes to become unavailable at a particular time. The node is scheduled only if the status is up.

When the xtprocadmin -ks option is used, then the option can either a normal argument (up, down, etc.), or it can have a colon in it to represent a conditional option; for example, the option of the form up:down means "if state was up, mark down".

For more information, see the xtprocadmin(8) man page.

View node characteristics

login# xtprocadmin
   NID    (HEX)    NODENAME     TYPE    STATUS        MODE
     1      0x1  c0-0c0s0n1  service        up       batch
     2      0x2  c0-0c0s0n2  service        up       batch
     5      0x5  c0-0c0s1n1  service        up       batch
     6      0x6  c0-0c0s1n2  service        up       batch
     8      0x8  c0-0c0s2n0  compute        up       batch
     9      0x9  c0-0c0s2n1  compute        up       batch
    10      0xa  c0-0c0s2n2  compute        up       batch
    11      0xb  c0-0c0s2n3  compute        up       batch

View all node attributes

login# xtprocadmin -A
   NID    (HEX)    NODENAME     TYPE ARCH        OS CPUS  CU AVAILMEM   PAGESZ CLOCKMHZ GPU SOCKETS DIES C/CU                           LABEL0                           LABEL1                           LABEL2                           LABEL3
     1      0x1  c0-0c0s0n1  service   xt (service)   16   8    32768     4096     2600   0       1    1    2                             
     2      0x2  c0-0c0s0n2  service   xt (service)   16   8    32768     4096     2600   0       1    1    2                             
     5      0x5  c0-0c0s1n1  service   xt (service)   16   8    32768     4096     2600   0       1    1    2                             
     6      0x6  c0-0c0s1n2  service   xt (service)   16   8    32768     4096     2600   0       1    1    2                             
     8      0x8  c0-0c0s2n0  compute   xt       CNL   32  16    65536     4096     2600   0       2    2    2                             
     9      0x9  c0-0c0s2n1  compute   xt       CNL   32  16    65536     4096     2600   0       2    2    2                             
    10      0xa  c0-0c0s2n2  compute   xt       CNL   32  16    65536     4096     2600   0       2    2    2

View selected attributes of selected nodes

For this example, the -a option lists the selected attributes to display:

login# xtprocadmin -n 8 -a arch,clockmhz,os,cores
   NID    (HEX)    NODENAME     TYPE ARCH CLOCKMHZ        OS CPUS
     8      0x8  c0-0c0s2n0  compute   xt     2600       CNL   32

Disable a node

For this example, the admindown option disables node c0-0c0s3n1 such that it cannot be allocated:

crayadm@nid00004> xtprocadmin -n c0-0c0s3n1 -k s admindown

Disable all processors

crayadm@nid00004> xtprocadmin -k s admindown