The items in themenu specifies information that are relevant for the Dolphin Admin GUI
to the network manager running on the local or a remote machine.
from the network manager.
of the node and interconnect (instead of waiting for the update interval to expire).
will show the value of selected counters of each adapter instead of the node icons which is useful for debugging fabric problems.
The commands in the cluster menu are executed on all nodes in parallel and the results are displayed by
sciadmin. When choosing one of the fabric options the command will be executed on all nodes in that fabric.
Each fabric in the cluster has a sub-menu. Within this sub-menu, the , , are diagnostics functions that can be used to get more detailed information about a fabric that shows problem symptoms.
prints only errors that have been found.
prints more verbose status information (verbosity level 1).
prints the full diagnostic information including all error counters (verbosity level 9).
The other commands in the Cluster menu are:
displays the Cluster Settings dialog (see below).
reboot all cluster nodes after a confirmation.
powers down all cluster nodes after a confirmation.
to increase/decrease the amount of logging from the Dolphin Network Manager.
to test the quality of your ethernet connections in the cluster.
Select theoption to make sure that the different adapters in your hosts are connected to the same fabric. This option is only displayed for clusters with more than one fabric.
The options in the Node menu are identical to the options in the Section 3.5, “Adapter Settings”.and menu, only that commands are executed on the selected node only. The only additional option is that is described in the
The Dolphin Interconnect Manager provides you with several options on how to run the cluster.
Check Interval Admin alters the number of seconds between each time the Network Manager sends updates to the <Filename>Sciadmin</Filename> GUI.
Check Interval Network Manager alters the number of seconds between each time the Network Manager receives updates from the Node Managers.
Topology specifies that topology that you configured the cluster in, while Topology found displays the auto-determined topology. Changes to the topology setting can be performed with dishostseditor.
Auto Rerouting lets you decide to enable automatic fail over recovery (On), choose to freeze the routing to a current state (Off), or use the default routing tables in the driver (Default), the latter also means that no automatic rerouting will take place.
Nodes in X,Y,Z dimension shows how the interconnect is currently dimensioned. Changes to the dimension settings can be performed with dishostseditor.
Remove Session to dead nodes lets you decide whether to remove the session to nodes that are unavailable.
Wait before removing session defines the number of seconds to wait until removing sessions with a node that has died or became inaccessible by other means.
Automatic Create Sessions to new nodes lets you decide if the Network Manager shall create sessions to all available nodes.
Alert script lets you choose to enable/disable the use of a script that may alert the cluster status to an administrator.
IRM Driver lets you choose to enable/disable the IRM driver.
The Advanced Settings button in the node menu allows you to retrieve more detailed information about an adapter and to disable/enable links of this adapter.
Link Frequency sets the frequency of a link. It is not recommended to change the default setting.
Prefetch Memsize shows the maximum amount of remote memory that can be accessed by this node.
A changed value will not become effective until the IRM driver is restarted on the node, which has to be done outside of
sciadmin. Setting this value too high (> 512MB) can cause problem with some machines, especially for 32bit platforms.
SCI LINK 0 / 1 / 2 allows to set the way a link is controlled:
Automatic lets the network manager control the link to enable and disable it as required by the link and the interconnect status.
Disabled forces a link down. This is a per-session setting (the link will be under control of the network manager if it is restarted), and only required as a temporary measure for trouble shooting.
The disable link option can also be used as a temporary measure to disable an unstable adapter or ringlet so that it does not impose unnecessary noise on the adapters. If such an unlikely event occurs, please contact Dolphin support.
A manually disabled link is marked blue in the
sciadmin interconnect display, as shown in the screenshot below.
Figure B.10. Link disabled by istrator (Disabling the links on the machine with hostname tiger-5 takes down the corresponding links on the other machines that share the same ringlet.).