Cisco GEM318P User manual

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Cisco SFS InfiniBand Host Drivers
User Guide for Linux
Release 3.2.0
June 2007
Text Part Number: OL-12309-01

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Cisco SFS InfiniBand Host Drivers
User Guide for Linux
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CONTENTS
Preface vii
Audience vii
Organization vii
Conventions viii
Root and Non-root Conventions in Examples ix
Related Documentation ix
Obtaining Documentation, Obtaining Support, and Security Guidelines ix
CHAPTER 1About Host Drivers 1-1
Introduction 1-1
Architecture 1-2
Supported Protocols 1-3
IPoIB 1-3
SRP 1-3
SDP 1-3
Supported APIs 1-4
MVAPICH MPI 1-4
uDAPL 1-4
Intel MPI 1-4
HP MPI 1-4
HCA Utilities and Diagnostics 1-4
CHAPTER 2Installing Host Drivers 2-1
Introduction 2-1
Contents of ISO Image 2-2
Installing Host Drivers from an ISO Image 2-2
Uninstalling Host Drivers from an ISO Image 2-3
CHAPTER 3IP over IB Protocol 3-1
Introduction 3-1
Manually Configuring IPoIB for Default IB Partition 3-2

Contents
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Subinterfaces 3-2
Creating a Subinterface Associated with a Specific IB Partition 3-3
Removing a Subinterface Associated with a Specific IB Partition 3-4
Verifying IPoIB Functionality 3-5
IPoIB Performance 3-6
Sample Startup Configuration File 3-8
IPoIB High Availability 3-8
Merging Physical Ports 3-8
Unmerging Physical Ports 3-9
CHAPTER 4SCSI RDMA Protocol 4-1
Introduction 4-1
Configuring SRP 4-1
Configuring ITLs when Using Fibre Channel Gateway 4-2
Configuring ITLs with Element Manager while No Global Policy Restrictions Apply 4-2
Configuring ITLs with Element Manager while Global Policy Restrictions Apply 4-4
Configuring SRP Host 4-6
Verifying SRP 4-7
Verifying SRP Functionality 4-7
Verifying with Element Manager 4-8
CHAPTER 5Sockets Direct Protocol 5-1
Introduction 5-1
Configuring IPoIB Interfaces 5-1
Converting Sockets-Based Application 5-2
Explicit/Source Code Conversion Type 5-2
Automatic Conversion Type 5-2
Log Statement 5-3
Match Statement 5-3
SDP Performance 5-4
Netperf Server with IPoIB and SDP 5-6
CHAPTER 6uDAPL 6-1
Introduction 6-1
uDAPL Test Performance 6-1
uDAPL Throughput Test Performance 6-2
uDAPL Latency Test Performance 6-3
Compiling uDAPL Programs 6-4

Contents
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CHAPTER 7MVAPICH MPI 7-1
Introduction 7-1
Initial Setup 7-2
Configuring SSH 7-2
Editing Environment Variables 7-5
Setting Environment Variables in System-Wide Startup Files 7-6
Editing Environment Variables in the Users Shell Startup Files 7-6
Editing Environment Variables Manually 7-7
MPI Bandwidth Test Performance 7-7
MPI Latency Test Performance 7-8
Intel MPI Benchmarks (IMB) Test Performance 7-9
Compiling MPI Programs 7-12
CHAPTER 8HCA Utilities and Diagnostics 8-1
Introduction 8-1
hca_self_test Utility 8-1
tvflash Utility 8-3
Viewing Card Type and Firmware Version 8-3
Upgrading Firmware 8-4
Diagnostics 8-5
APPENDIX AAcronyms and Abbreviations A-1
I NDEX

Contents
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Preface
This preface describes who should read the Cisco SFS InfiniBand Host Drivers User Guide for Linux,
how it is organized, and its document conventions. It includes the following sections:
•Audience, page vii
•Organization, page vii
•Conventions, page viii
•Root and Non-root Conventions in Examples, page ix
•Related Documentation, page ix
•Obtaining Documentation, Obtaining Support, and Security Guidelines, page ix
Audience
The intended audience is the administrator responsible for installing, configuring, and managing host
drivers and host card adapters. This administrator should have experience administering similar
networking or storage equipment.
Organization
This publication is organized as follows:
Chapter Title Description
Chapter 1 About Host Drivers Describes the Cisco commercial host driver.
Chapter 2 Installing Host Drivers Describes the installation of host drivers.
Chapter 3 IP over IB Protocol Describes how to configure IPoIB to run IP
traffic over an IB network.
Chapter 4 SCSI RDMA Protocol Describes how to configure SRP.
Chapter 5 Sockets Direct Protocol Describes how to configure and run SDP.
Chapter 6 uDAPL Describes how to build and configure
uDAPL.
Chapter 7 MVAPICH MPI Describes the setup and configuration
information for MVAPICH MPI.

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Preface
Conventions
Conventions
This document uses the following conventions:
Chapter 8 HCA Utilities and Diagnostics Describes the fundamental HCA utilities
and diagnostics.
Appendix A Acronyms and Abbreviations Defines the acronyms and abbreviations
that are used in this publication.
Chapter Title Description
Convention Description
boldface font Commands, command options, and keywords are in
boldface. Bold text indicates Chassis Manager elements or
text that you must enter as-is.
italic font Arguments in commands for which you supply values are in
italics. Italics not used in commands indicate emphasis.
Menu1 > Menu2 >
Item…
Series indicate a pop-up menu sequence to open a form or
execute a desired function.
[ ] Elements in square brackets are optional.
{ x | y | z } Alternative keywords are grouped in braces and separated by
vertical bars. Braces can also be used to group keywords
and/or arguments; for example, {interface interface type}.
[ x | y | z ] Optional alternative keywords are grouped in brackets and
separated by vertical bars.
string A nonquoted set of characters. Do not use quotation marks
around the string or the string will include the quotation
marks.
screen font Terminal sessions and information the system displays are in
screen font.
boldface screen
font
Information you must enter is in boldface screen font.
italic screen font Arguments for which you supply values are in italic
screen font.
^ The symbol ^ represents the key labeled Control—for
example, the key combination ^D in a screen display means
hold down the Control key while you press the D key.
< > Nonprinting characters, such as passwords are in angle
brackets.
!, # An exclamation point (!) or a pound sign (#) at the beginning
of a line of code indicates a comment line.

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Preface
Root and Non-root Conventions in Examples
Notes use the following convention:
Note Means reader take note. Notes contain helpful suggestions or references to material not covered in the
manual.
Cautions use the following convention:
Caution Means reader be careful. In this situation, you might do something that could result in equipment
damage or loss of data.
Root and Non-root Conventions in Examples
This document uses the following conventions to signify root and non-root accounts:
Related Documentation
For additional information related to the Cisco SFS IB host drivers, see the following documents:
•Cisco InfiniBand Host Channel Adapter Hardware Installation Guide
•Release Notes for Linux Host Drivers Release 3.2.0
•Release Notes for Cisco OFED, Release 1.1
•Cisco OpenFabrics Enterprise Distribution InfiniBand Host Drivers User Guide for Linux
•Cisco SFS Product Family Element Manager User Guide
•Cisco SFS InfiniBand Fibre Channel Gateway User Guide
Obtaining Documentation, Obtaining Support, and Security
Guidelines
For information on obtaining documentation, obtaining support, providing documentation feedback,
security guidelines, and also recommended aliases and general Cisco documents, see the monthly
What’s New in Cisco Product Documentation, which also lists all new and revised Cisco technical
documentation, at:
http://www.cisco.com/en/US/docs/general/whatsnew/whatsnew.html
Convention Description
host1#
host2#
When this prompt appears in an example, it indicates that you
are in a root account.
host1$
host2$
When this prompt appears in an example, it indicates that you
are in a non-root account.

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Obtaining Documentation, Obtaining Support, and Security Guidelines

CHAPTER
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1
About Host Drivers
This chapter describes host drivers and includes the following sections:
•Introduction, page 1-1
•Architecture, page 1-2
•Supported Protocols, page 1-3
•Supported APIs, page 1-4
•HCA Utilities and Diagnostics, page 1-4
Note For expansions of acronyms and abbreviations used in this publication, see Appendix A, “Acronyms and
Abbreviations.”
Introduction
The Cisco IB HCA offers high-performance 10-Gbps and 20-Gbps IB connectivity to PCI-X and
PCI-Express-based servers. As an integral part of the Cisco SFS solution, the Cisco IB HCA enables you
to create a unified fabric for consolidating clustering, networking, and storage communications.
After you physically install the HCA in the server, install the drivers to run IB-capable protocols. HCAs
support the following protocols in the Linux environment:
•IPoIB
•SRP
•SDP
HCAs support the following APIs in the Linux environment:
•MVAPICH MPI
•uDAPL API
•Intel MPI
•HP MPI
Host drivers also provide utilities to help you configure and verify your HCA. These utilities provide
upgrade and diagnostic features.

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Chapter 1 About Host Drivers
Architecture
Note See the “Root and Non-root Conventions in Examples” section on page ix for details about the
significance of prompts used in the examples in this chapter.
Architecture
Figure 1-1 displays the software architecture of the protocols and APIs that HCAs support. The figure
displays ULPs and APIs in relation to other IB software elements.
Figure 1-1 HCA Supported Protocols and API Architecture
180411
InfiniBand HCA
Hardware
Specific Driver
Connection
Manager
InfiniBand Verbs / API
SA
Client
Connection Manager
Abstraction (CMA)
User Level
Verbs / API
SRP
uDAPL
User Level
MAD API
Diag
Tools
Hardware
Provider
Mid-Layer
Upper
Layer
Protocol
User
APIs
Kernel Space
User Space
Application
Level
SMA
SDPIPoIB
Block
Storage
Access
IP Based
App
Access
SCSI RDMA
Protocol (Initiator)
SRP
Sockets Direct
Protocol
SDP
IP over InfiniBandIPoIB
User Direct Access
Programming Lib
UDAPL
Subnet
Administrator
SA
MPI Message Passing
Interface
Host Channel
Adapter
HCA
Subnet Manager
Agent
SMA
Management
Datagram
MAD
MPI Based
App Access
Various
MPI's

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Chapter 1 About Host Drivers
Supported Protocols
Supported Protocols
This section describes the supported protocols and includes the following topics:
•IPoIB
•SRP
•SDP
Protocol here refers to software in the networking layer in kernel space.
IPoIB
The IPoIB protocol passes IP traffic over the IB network. Configuring IPoIB requires similar steps to
configuring IP on an Ethernet network. SDP relies on IPoIB to resolve IP addresses. (See the “SDP”
section on page 1-3.)
To configure IPoIB, you assign an IP address and subnet mask to each IB port. IPoIB automatically adds
IB interface names to the IP network configuration. To configure IPoIB, see Chapter 3, “IP over IB
Protocol.”
SRP
SRP runs SCSI commands across RDMA-capable networks so that IB hosts can communicate with Fibre
Channel storage devices and IB-attached storage devices. SRP requires an SFS with a Fibre Channel
gateway to connect the host to Fibre Channel storage. In conjunction with an SFS, SRP disguises
IB-attached hosts as Fibre Channel-attached hosts. The topology transparency feature lets Fibre Channel
storage communicate seamlessly with IB-attached hosts (known as SRP hosts). For configuration
instructions, see Chapter 4, “SCSI RDMA Protocol.”
SDP
SDP is an IB-specific upper- layer protocol. It defines a standard wire protocol to support stream sockets
networking over IB. SDP enables sockets-based applications to take advantage of the enhanced
performance features provided by IB and achieves lower latency and higher bandwidth than IPoIB
running sockets-based applications. It provides a high-performance, data transfer protocol for
stream-socket networking over an IB fabric. You can configure the driver to automatically translate TCP
to SDP based on a source IP, a destination, or an application name. For configuration instructions, see
Chapter 5, “Sockets Direct Protocol.”

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Chapter 1 About Host Drivers
Supported APIs
Supported APIs
This section describes the supported APIs and includes the following topics:
•MVAPICH MPI
•uDAPL
•Intel MPI
•HP MPI
API refers to software in the networking layer in user space.
MVAPICH MPI
MPI is a standard library functionality in C, C++, and Fortran that can be used to implement a
message-passing program. MPI allows the coordination of a program running as multiple processes in a
distributed memory environment. This document includes setup and configuration information for
MVAPICH MPI. For more information, see Chapter 7, “MVAPICH MPI.”
uDAPL
uDAPL defines a single set of user-level APIs for all RDMA-capable transports. The uDAPL mission is
to define a transport-independent and platform-standard set of APIs that exploits RDMA capabilities
such as those present in IB. For more information, see Chapter 6, “uDAPL.”
Intel MPI
Cisco tests and supports the SFS IB host drivers with Intel MPI. The Intel MPI implementation is
available for separate purchase from Intel. For more information, visit the following URL:
http://www.intel.com/go/mpi
HP MPI
Cisco tests and supports the SFS IB host drivers with HP MPI for Linux. The HP MPI implementation
is available for separate purchase from Hewlett Packard. For more information, visit the following URL:
http://www.hp.com/go/mpi
HCA Utilities and Diagnostics
The HCA utilities provide basic tools to view HCA attributes and run preliminary troubleshooting tasks.
For more information, see Chapter 8, “HCA Utilities and Diagnostics.”

CHAPTER
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2
Installing Host Drivers
The chapter includes the following sections:
•Introduction, page 2-1
•Contents of ISO Image, page 2-2
•Installing Host Drivers from an ISO Image, page 2-2
•Uninstalling Host Drivers from an ISO Image, page 2-3
Note See the “Root and Non-root Conventions in Examples” section on page ix for details about the
significance of prompts used in the examples in this chapter.
Introduction
The Cisco Linux IB driver is delivered as an ISO image. The ISO image contains the binary RPMs for
selected Linux distributions. The Cisco Linux IB drivers distribution contains an installation script
called tsinstall. The install script performs the necessary steps to accomplish the following:
•Discover the currently installed kernel
•Uninstall any IB stacks that are part of the standard operating system distribution
•Install the Cisco binary RPMs if they are available for the current kernel
•Identify the currently installed IB HCA and perform the required firmware updates
Note For specific details about which binary RPMs are included and which standard Linux distributions and
kernels are currently supported, see the Release Notes for Linux Host Drivers Release 3.2.0.

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Chapter 2 Installing Host Drivers
Contents of ISO Image
Contents of ISO Image
The ISO image contains the following directories and files:
•docs/
This directory contains the related documents.
•tsinstall
This is the installation script.
•redhat/
This directory contains the binary RPMs for Red Hat Enterprise Linux.
•suse/
This directory contains the binary RPMs for SUSE Linux Enterprise Server.
Installing Host Drivers from an ISO Image
See the Cisco InfiniBand Host Channel Adapter Hardware Installation Guide to correctly install HCAs.
To install host drivers from an ISO image, perform the following steps:
Note If you upgrade your Linux kernel after installing these host drivers, you need to reinstall the host drivers.
Step 1 Verify that the system has a viable HCA installed by ensuring that you can see the InfiniHost entries in
the display.
The following example shows that the installed HCA is viable:
host1# lspci -v | grep Mellanox
06:01.0 PCI bridge: Mellanox Technologies MT23108 PCI Bridge (rev a0) (prog-if 00 [Normal
decode])
07:00.0 InfiniBand: Mellanox Technologies MT23108 InfiniHost (rev a0)
Subsystem: Mellanox Technologies MT23108 InfiniHost
Step 2 Download an ISO image, and copy it to your network.
You can download an ISO image from http://www.cisco.com/cgi-bin/tablebuild.pl/sfs-linux
Step 3 Use the md5sum utility to confirm the file integrity of your ISO image.
Step 4 Install drivers from an ISO image on your network.
The following example shows how to install host drivers from an ISO image:
host1# mount -o ro,loop topspin-host-3.2.0-136.iso /mnt
host1# /mnt/tsinstall
The following kernels are installed, but do not have drivers available:
2.6.9-34.EL.x86_64
The following installed packages are out of date and will be upgraded:
topspin-ib-rhel4-3.2.0-118.x86_64
topspin-ib-mpi-rhel4-3.2.0-118.x86_64
topspin-ib-mod-rhel4-2.6.9-34.ELsmp-3.2.0-118.x86_64
The following packages will be installed:
topspin-ib-rhel4-3.2.0-136.x86_64 (libraries, binaries, etc)

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Chapter 2 Installing Host Drivers
Uninstalling Host Drivers from an ISO Image
topspin-ib-mpi-rhel4-3.2.0-136.x86_64 (MPI libraries, source code, docs, etc)
topspin-ib-mod-rhel4-2.6.9-34.ELsmp-3.2.0-136.x86_64 (kernel modules)
installing 100% ###############################################################
Upgrading HCA 0 HCA.LionMini.A0 to firmware build 3.2.0.136
New Node GUID = 0005ad0000200848
New Port1 GUID = 0005ad0000200849
New Port2 GUID = 0005ad000020084a
Programming HCA firmware... Flash Image Size = 355076
Flashing - EFFFFFFFEPPPPPPPEWWWWWWWEWWWWWWWEWWWWWVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
Flash verify passed!
Step 5 Run a test to verify whether or not the IB link is established between the respective host and the IB
switch.
The following example shows a test run that verifies an established IB link:
host1# /usr/local/topspin/sbin/hca_self_test
---- Performing InfiniBand HCA Self Test ----
Number of HCAs Detected ................ 1
PCI Device Check ....................... PASS
Kernel Arch ............................ x86_64
Host Driver Version .................... rhel4-2.6.9-34.ELsmp-3.2.0-136
Host Driver RPM Check .................. PASS
HCA Type of HCA #0 ..................... LionMini
HCA Firmware on HCA #0 ................. v5.2.000 build 3.2.0.136 HCA.LionMini.A0
HCA Firmware Check on HCA #0 ........... PASS
Host Driver Initialization ............. PASS
Number of HCA Ports Active ............. 2
Port State of Port #0 on HCA #0 ........ UP 4X
Port State of Port #1 on HCA #0 ........ UP 4X
Error Counter Check on HCA #0 .......... PASS
Kernel Syslog Check .................... PASS
Node GUID .............................. 00:05:ad:00:00:20:08:48
------------------ DONE ---------------------
The HCA test script, as shown in the example above, checks for the HCA firmware version, verifies that
proper kernel modules are loaded on the IP drivers, shows the state of the HCA ports, shows the counters
that are associated with each IB port, and indicates whether or not there are any error messages in the
host operating system log files.
Note To troubleshoot the results of this test, see Chapter 8, “HCA Utilities and Diagnostics.”
Uninstalling Host Drivers from an ISO Image
The following example shows how to uninstall a host driver from a device:
host1# rpm -e `rpm -qa | grep topspin`

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Chapter 2 Installing Host Drivers
Uninstalling Host Drivers from an ISO Image

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3
IP over IB Protocol
This chapter describes IP over IB protocol and includes the following sections:
•Introduction, page 3-1
•Manually Configuring IPoIB for Default IB Partition, page 3-2
•Subinterfaces, page 3-2
•Verifying IPoIB Functionality, page 3-5
•IPoIB Performance, page 3-6
•Sample Startup Configuration File, page 3-8
•IPoIB High Availability, page 3-8
Note See the “Root and Non-root Conventions in Examples” section on page ix for details about the
significance of prompts used in the examples in this chapter.
Introduction
Configuring IPoIB requires that you follow similar steps to the steps used for configuring IP on an
Ethernet network. When you configure IPoIB, you assign an IP address and a subnet mask to each HCA
port. The first HCA port on the first HCA in the host is the ib0 interface, the second port is ib1, and so on.
Note To enable these IPoIB settings across reboots, you must explicitly add these settings to the networking
interface startup configuration file. For a sample configuration file, see the “Sample Startup
Configuration File” section on page 3-8.
See your Linux distribution documentation for additional information about configuring IP addresses.

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Chapter 3 IP over IB Protocol
Manually Configuring IPoIB for Default IB Partition
Manually Configuring IPoIB for Default IB Partition
To manually configure IPoIB for the default IB partition, perform the following steps:
Step 1 Log in to your Linux host.
Step 2 To configure the interface, enter the ifconfig command with the following items:
•The appropriate IB interface (ib0 or ib1 on a host with one HCA)
•The IP address that you want to assign to the interface
•The netmask keyword
•The subnet mask that you want to assign to the interface
The following example shows how to configure an IB interface:
host1# ifconfig ib0 192.168.0.1 netmask 255.255.252.0
Step 3 (Optional) Verify the configuration by entering the ifconfig command with the appropriate port identifier
ib# argument.
The following example shows how to verify the configuration:
host1# ifconfig ib0
ib0 Link encap:Ethernet HWaddr F8:79:D1:23:9A:2B
inet addr:192.168.0.1 Bcast:192.168.0.255 Mask:255.255.255.0
inet6 addr: fe80::9879:d1ff:fe20:f4e7/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:2044 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:9 overruns:0 carrier:0
collisions:0 txqueuelen:1024
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
Step 4 Repeat Step 2 and Step 3 on the remaining interface(s).
Subinterfaces
This section describes subinterfaces. Subinterfaces divide primary (parent) interfaces to provide traffic
isolation. Partition assignments distinguish subinterfaces from parent interfaces. The default Partition
Key (p_key), ff:ff, applies to the primary (parent) interface.
This section includes the following topics:
•Creating a Subinterface Associated with a Specific IB Partition, page 3-3
•Removing a Subinterface Associated with a Specific IB Partition, page 3-4