QLogic OFED+ Host Software User Guide, Rev. B
QLogic OFED+ Host Software User Guide, Rev. B
QLogic OFED+ Host Software User Guide, Rev. B
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1–Introduction<br />
Overview<br />
Overview<br />
• Appendix E, describes two methods the administrator can use to allow users<br />
to submit MPI jobs through batch queuing systems.<br />
• Appendix F, provides information for troubleshooting installation, cluster<br />
administration, and MPI.<br />
• Appendix G, provides information for troubleshooting the upper layer<br />
protocol utilities in the fabric.<br />
• Appendix H, provides instructions for checking write combining and for using<br />
the Page Attribute Table (PAT) and Memory Type Range Registers (MTRR).<br />
• Appendix I, contains useful programs and files for debugging, as well as<br />
commands for common tasks.<br />
• Appendix J, contains a list of useful web sites and documents for a further<br />
understanding of the InfiniBand fabric, and related information.<br />
In addition, the <strong>QLogic</strong> InfiniBand Adapter Hardware Installation <strong>Guide</strong> contains<br />
information on <strong>QLogic</strong> hardware installation and the <strong>QLogic</strong> Fabric <strong>Software</strong><br />
Installation <strong>Guide</strong> contains information on <strong>QLogic</strong> software installation.<br />
The material in this documentation pertains to a <strong>QLogic</strong> OFED cluster. A cluster is<br />
defined as a collection of nodes, each attached to an InfiniBand-based fabric<br />
through the <strong>QLogic</strong> interconnect.<br />
The <strong>QLogic</strong> InfiniBand adapters are InfiniBand 4X adapters. The quad data rate<br />
(QDR) adapters (QLE7340, QLE7342, QMH7342, and QME7342) have a raw<br />
data rate of 40Gbps (data rate of 32Gbps). The double data rate (DDR) adapters<br />
(QLE7240 and QLE7280) have a raw data rate of 20Gbps (data rate of 16Gbps).<br />
The single data rate (SDR) adapters (QLE7140) have a raw data rate of 10Gbps<br />
(data rate of 8Gbps). The QLE7340, QLE7342, QMH7342, and QME7342<br />
adapters can also run in DDR or SDR mode, and the QLE7240 and QLE7280 can<br />
also run in SDR mode.<br />
The <strong>QLogic</strong> adapters utilize standard, off-the-shelf InfiniBand 4X switches and<br />
cabling. The <strong>QLogic</strong> interconnect is designed to work with all InfiniBand-compliant<br />
switches.<br />
NOTE:<br />
If you are using the QLE7240 or QLE7280, and want to use DDR mode,<br />
then DDR-capable switches must be used. Likewise, when using the<br />
QLE7300 series adapters in QDR mode, a QDR switch must be used.<br />
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