ibdmchk(1)

NAME

   IBDM - Network Checker and Attributes Analyzer

SYNOPSYS

   ibdmchk has two operation modes: design and verification.

   DESIGN:

   ibdmchk [-v][-h][-u][-r <roots file>] -t <topology file> -n <SM Node>
     -p <SM Port> [-e] [-l <lmc>]

   VERIFICATION:

   ibdmchk [-v][-h][-r <roots file>] [-s <subnet file>] [-f <fdb file>]
     [-m <mcfdbs file> [-l <lmc>] [-u] [-M] [-a]
     [-c <path sl file>] [-d <sl2vl tables file>]

DESIGN MODE DESCRIPTION

   The Design mode is intended to be used before the cluster is built. It
   provides basic checks of the specified network as described by a
   topology file. After simulating the SM LID assignment and routing
   algorithms it provides reports of the (H)CA to (H)CA paths depth
   histogram and credit deadlock potential in the resulting routing
   scheme.

ARGUMENTS:

-t--topo <topo file>
The topology file specifying the network. See man ibdm-topology-file

-n--node <SM Node>
-p--port <SM Port>

OPTIONS

-v--verbose
-h--help
-l--lmc <lmc>
-e--enh
-r--roots <roots file> A file with all the roots node names (one on each
line).

VERIFICATION MODE DESCRIPTION

   After the cluster is built and OpenSM is run (using flag -D 0x43) it
   reports the subnet and FDB tables into the files osm-subnet.lst,
   osm.fdbs and osm.fdbs in /var/log/ (or subnet.lst, osm.fdbs and
   osm.mcfdbs into /var/cache/ibutils in older OpenSM versions). ibdiagnet
   is also producing the same files in its output directory.  Based on
   these files the utility checks all CA to CA connectivity. Further
   analysis for credit deadlock potential is performed and reported.  In
   case of an LMC > 0 it reports histograms for how many systems and nodes
   are common between the different paths for the same port pairs.

ARGUMENTS

-l--lmc <lmc>

OPTIONS

-v--verbose
-h--help
-s--subnet <file>
/var/cache/ibutils/subnet.lst)

-f--fdb <file>
/var/log/osm.fdbs or /var/cache/ibutils/osm.fdbs).

-m--mcfdb <file>
/var/log/osm.mcfdbs or /var/cache/ibutils/osm.mcfdbs).

-c--psl <file>
-d--slvl <file>
-r--roots <roots file>
-u--updn
-M--MFT
-a--all

AUTHOR

   Eitan Zahavi, Mellanox Technologies LTD, [email protected]

Opportunity

Personal Opportunity - Free software gives you access to billions of dollars of software at no cost. Use this software for your business, personal use or to develop a profitable skill. Access to source code provides access to a level of capabilities/information that companies protect though copyrights. Open source is a core component of the Internet and it is available to you. Leverage the billions of dollars in resources and capabilities to build a career, establish a business or change the world. The potential is endless for those who understand the opportunity.

Business Opportunity - Goldman Sachs, IBM and countless large corporations are leveraging open source to reduce costs, develop products and increase their bottom lines. Learn what these companies know about open source and how open source can give you the advantage.

Free Software

Free Software provides computer programs and capabilities at no cost but more importantly, it provides the freedom to run, edit, contribute to, and share the software. The importance of free software is a matter of access, not price. Software at no cost is a benefit but ownership rights to the software and source code is far more significant.

Free Office Software - The Libre Office suite provides top desktop productivity tools for free. This includes, a word processor, spreadsheet, presentation engine, drawing and flowcharting, database and math applications. Libre Office is available for Linux or Windows.

Free Books

The Free Books Library is a collection of thousands of the most popular public domain books in an online readable format. The collection includes great classical literature and more recent works where the U.S. copyright has expired. These books are yours to read and use without restrictions.

Source Code - Want to change a program or know how it works? Open Source provides the source code for its programs so that anyone can use, modify or learn how to write those programs themselves. Visit the GNU source code repositories to download the source.

Education

Study at Harvard, Stanford or MIT - Open edX provides free online courses from Harvard, MIT, Columbia, UC Berkeley and other top Universities. Hundreds of courses for almost all major subjects and course levels. Open edx also offers some paid courses and selected certifications.

Linux Manual Pages - A man or manual page is a form of software documentation found on Linux/Unix operating systems. Topics covered include computer programs (including library and system calls), formal standards and conventions, and even abstract concepts.