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Each partition managed by the Bandwidth Manager must have a [Device] section associated to it in the
/usr/discreet/sw/cfg/sw_bwmgr.cfg file.
To add a new device to the Bandwidth Manager:
1 Open the /usr/discreet/sw/cfg/sw_bwmgr.cfg file in a text editor.
2 Add a new [Device] section at the end of the file, using the following syntax:
TIP You may also copy and paste an existing [Device] section, and change its parameters.
[Device<device_number>]
Path<path_number>=<device_mount_point>
TotalAvailableReadBandwidth=<total_read_bandwidth>
TotalAvailableWriteBandwidth=<total_write_bandwidth>
DefaultReservation=<default_reservation>
where:
■ <device_number> represents the number of the [Device] section, starting at 0. For example:
[Device0]
■ Path specifies the partition's mount point. Since a partition can have several paths, <path_number>
represents the number of the current path, starting at 0 for each device. For example:
Path0=/mnt/XYZ
Path1=/usr/local/ABC
■ TotalAvailableReadBandwidth represents the estimated total reading bandwidth of the device, in
megabytes per second. Based on this value, and on the amount of active reservations for the current
partition, the Bandwidth Manager decides whether new reservation requests are granted or rejected.
For example:
TotalAvailableReadBandwidth=200
■ TotalAvailableWriteBandwidth represents the maximum estimated writing bandwidth of the
device, in megabytes per second. If this parameter is not specified, its value defaults to the value of
TotalAvailableReadBandwidth. For example:
TotalAvailableWriteBandwidth=150
NOTE The total bandwidth parameters are estimates of the theoretical maximum bandwidth of the
partition. The actual bandwidth is affected by several factors, including multiple applications trying to
concurrently read or write to it. The Bandwidth Manager continuously measures partition performance
and dynamically maintains the actual total available bandwidth for each partition.
■ DefaultReservation sets the bandwidth assigned by default to applications that are denied a
reservation request or that don't have individual or group reservations associated to them. The
value is expressed in megabytes per second. For example:
DefaultReservation=10
3 After setting up all the partition parameters described above, you can start defining reservations for
the current partition.
4 Save and close the configuration file, and restart Stone and Wire by typing:
/etc/init.d/stone+wire restart
66 | Chapter 6 Software configuration
- Workstations 1
- Contents 4
- Installation workflows 6
- Concepts and Terminology 7
- System requirements 8
- Hardware configuration 10
- Typical configuration 11
- Optional Components 12
- Connect video components 16
- Connect audio components 17
- Connect media storage 18
- Connect media storage 20
- Connecting XR 6500 Storage 21
- Connect media storage 22
- RAID enclosure 23
- Connect media storage 24
- Connect media storage 26
- Filesystem Devices 27
- SCSI Tape Drive Devices 27
- Configure BIOS 28
- Configure BIOS 30
- Install Linux 32
- /etc/sysconfig/network 33
- /etc/resolv.conf 33
- /etc/hosts 33
- Configure an InfiniBand card 34
- Configure storage 35
- Configure storage 36
- Configure XR storage 37
- Configure storage 38
- Creating Hardware LUNs 39
- Configure storage 40
- Configure storage 42
- Installing Your Software 44
- Install Lustre stand-alone 46
- Uninstall 46
- Software configuration 48
- Set up the Wire network 49
- Configure Backburner services 50
- Lustre background rendering 53
- Set up render nodes 56
- Licensing Burn for Lustre 58
- Starting Backburner Server 59
- Configure Lustre BrowseD 60
- Event triggers 61
- Wiretap path translation 64
- About XML Syntax 65
- Control fragmentation 69
- Limit concurrent usage 70
- Monitor partition fill rate 76
- Enable media pre-allocation 77
- Test filesystem performance 78
- Killing an application 79
- Troubleshoot the Wire network 79
- Viewing InfiniBand Statistics 82
- Troubleshoot the filesystem 83
- Verifying Disk Usage 87
- Clearing the Undo Buffer 87
- Licensing and Starting 90
- Network licensing 91
- Request license codes 92
- Network licensing 94
- Start the license server 95
- Start the software 96
- 93 98
- 94 99
- Index 100
- 96 101
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