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5.6.1 HP ProLiant DL140 G3 and DL145 G3 Node Imaging Fails When Graphics Cards Are
Present.............................................................................................................................................27
6 Software Upgrades......................................................................................................29
6.1 Do Not Upgrade If You Want Or Require The Voltaire InfiniBand Software Stack.......................29
7 System Administration, Management, and Monitoring...........................................31
7.1 Perform A Dry Run Before Using The si_updateclient Utility To Update Nodes..........................31
7.2 Possible Problem With ext3 File Systems On SAN Storage............................................................31
8 HP XC System Software On Red Hat Enterprise Linux.............................................33
8.1 Enabling 32–bit Applications To Compile and Run .......................................................................33
9 Programming and User Environment.........................................................................35
9.1 MPI and OFED InfiniBand Stack Fork Restrictions........................................................................35
9.2 InfiniBand Multiple Rail Support....................................................................................................35
9.3 Benign Messages From HP-MPI Version 2.2.5.1.............................................................................35
10 Cluster Platform 3000................................................................................................37
11 Cluster Platform 4000................................................................................................39
12 Cluster Platform 6000................................................................................................41
12.1 Network Boot Operation and Imaging Failures on HP Integrity rx2600 Systems........................41
12.2 Notes That Apply To The Management Processor........................................................................41
12.2.1 Required Task: Change MP Settings on Console Switches...................................................41
12.2.2 MP Disables DHCP Automatically.......................................................................................41
12.2.3 Finding the IP Address of an MP..........................................................................................41
13 Integrated Lights Out Console Management Devices............................................43
13.1 iLO2 Devices In Server Blades Can Hang.....................................................................................43
14 Interconnects...............................................................................................................45
14.1 InfiniBand Interconnect.................................................................................................................45
14.1.1 enable Password Problem With Voltaire Switch Version 4.1................................................45
14.2 Myrinet Interconnect.....................................................................................................................45
14.2.1 Myrinet Monitoring Line Card Can Become Unresponsive.................................................45
14.2.2 The clear_counters Command Does Not Work On The 256 Port Switch..............................45
14.3 QsNet
II
Interconnect......................................................................................................................45
14.3.1 Possible Conflict With Use of SIGUSR2................................................................................46
14.3.2 The qsnet Database Might Contain Entries To Nonexistent Switch Modules......................46
15 Documentation............................................................................................................47
15.1 Documentation CD Search Option................................................................................................47
15.2 HP XC Manpages..........................................................................................................................47
15.2.1 New device_config.8.............................................................................................................47
15.2.2 Changes to ovp.8...................................................................................................................47
4 Table of Contents