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9–gPXE
Netbooting Over IB
IB0054606-02 A 9-7
To add an IB driver into the initrd file, The IB modules need to be copied
to the diskless image. The host machine needs to be pre-installed with the
QLogic OFED+ Host Software that is appropriate for the kernel version the
diskless image will run. The QLogic OFED+ Host Software is available for
download from
http://driverdownloads.qlogic.com/QLogicDriverDownloads_UI/default.aspx
a. If /vault/images/initrd.img file is already present on the server
machine, back it up. For example:
cp -a /vault/images/initrd.img /vault/images/
initrd.img.bak
NOTE
The remainder of this section assumes that QLogic OFED+ has been
installed on the Host machine.
!
WARNING
The following procedure modifies critical files used in the boot
procedure. It must be executed by users with expertise in the boot
process. Improper application of this procedure may prevent the
diskless machine from booting.
- OFED+ Host Software 1
- Release 1.5.4 1
- Document Revision History 2
- Table of Contents 3
- IB0054606-02 A v 5
- 5 Using Other MPIs 6
- E ULP Troubleshooting 10
- F Write Combining 10
- G Commands and Files 10
- H Recommended Reading 11
- List of Figures 12
- List of Tables 13
- User Guide 14
- Intended Audience 15
- Related Materials 15
- Documentation Conventions 15
- License Agreements 16
- Technical Support 17
- Knowledge Database 18
- 1 Introduction 19
- Overview 20
- Interoperability 21
- 1–Introduction 22
- 1-4 IB0054606-02 A 22
- 2 Step-by-Step Cluster Setup 23
- Using MPI 24
- 3 InfiniBand 25
- Installed Layout 26
- IPoIB Administration 29
- IB Bonding 30
- Red Hat EL5 and EL6 31
- Subnet Manager Configuration 34
- 3–InfiniBand 36
- 3-12 IB0054606-02 A 36
- Default Configuration 37
- 3-14 IB0054606-02 A 38
- DQG[ 39
- [I 39
- [ 40
- IB0054606-02 A 3-17 41
- ScanFrequency 42
- Other Settings 43
- Changing the MTU Size 44
- Managing the ib_qib Driver 45
- Performance Tuning 49
- Default Parameter Settings 50
- AMD CPU Systems 52
- AMD Interlagos CPU Systems 52
- Intel CPU Systems 52
- IB0054606-02 A 3-31 55
- Compute Nodes 59
- Node Type Selection 60
- Test Execution 60
- Homogeneous Nodes 61
- Adapter and Other Settings 62
- Remove Unneeded Services 63
- Configuring for ssh 64
- Process Limitation with ssh 68
- 3-48 IB0054606-02 A 72
- 4 Running MPI on QLogic 73
- Create the mpihosts File 75
- Running Open MPI Applications 75
- To Use Another Compiler 77
- Table 4-3. Intel 78
- Process Allocation 79
- Open MPI 81
- IB0054606-02 A 4-9 81
- 4-10 IB0054606-02 A 82
- PSM_SHAREDCONTEXTS=0 82
- PSM_SHAREDCONTEXTS=NO 82
- Running in Shared Memory Mode 83
- Using Open MPI’s mpirun 85
- Environment for Node Programs 87
- Setting MCA Parameters 89
- Name Description 91
- IB0054606-02 A 4-21 93
- compile line 93
- is used by other 93
- Debugging MPI Programs 94
- The TotalView 95
- 4-24 IB0054606-02 A 96
- MVAPICH2 100
- Running MVAPICH2 Applications 101
- Platform MPI 8 102
- Intel MPI 103
- Installation 104
- 5–Using Other MPIs 108
- 5-12 IB0054606-02 A 108
- 6 SHMEM Description and 109
- SHMEM Programs 111
- Compiling SHMEM Programs 112
- Running SHMEM Programs 113
- Slurm Integration 116
- Sizing Global Shared Memory 117
- 6-10 IB0054606-02 A 118
- Progress Model 119
- Active Progress 120
- Passive Progress 120
- Environment Variables 121
- Implementation Behavior 123
- 6-16 IB0054606-02 A 124
- IB0054606-02 A 6-17 125
- Operation Calls 126
- SHMEM Benchmark Programs 135
- QLogic SHMEM reduce benchmark 138
- Option Description 139
- 6-32 IB0054606-02 A 140
- 7 Virtual Fabric support in 141
- Virtual Fabric Support 142
- Using SL and PKeys 142
- Using Service ID 143
- Adapters 144
- 8 Dispersive Routing 145
- 8–Dispersive Routing 146
- 8-2 IB0054606-02 A 146
- IB0054606-02 A 8-3 147
- 8-4 IB0054606-02 A 148
- IB0054606-02 A 9-1 149
- Required Steps 150
- Installing DHCP 151
- Configuring DHCP 152
- Netbooting Over IB 153
- HTTP Boot Setup 162
- IB0054606-02 A 9-15 163
- /etc/init.d/httpd start 163
- 9-16 IB0054606-02 A 164
- A Benchmark Programs 165
- Between Two Nodes 168
- (osu_mbw_mr) 170
- A–Benchmark Programs 172
- A-8 IB0054606-02 A 172
- IB0054606-02 A A-11 175
- A-12 IB0054606-02 A 176
- B SRP Configuration 177
- QLogic SRP Configuration 178
- Specifying a Session 179
- B–SRP Configuration 180
- B-4 IB0054606-02 A 180
- script as follows: 182
- Port Indexes 184
- Specifying a SRP Target Port 185
- Specifying an Adapter 186
- Restarting the SRP Module 187
- SRP Initiator port to another 190
- FVIC in Chassis 194
- 1. Review ib_qlgc_srp_query 197
- Native IB Storage SRP Driver” 198
- Native IB Storage SRP Driver 198
- OFED SRP Configuration 200
- B-26 IB0054606-02 A 202
- C Integration with a Batch 203
- C-4 IB0054606-02 A 206
- D Troubleshooting 207
- BIOS Settings 208
- InfiniPath 212
- SDP Module Not Loading 213
- Performance Issues 215
- Erratic Performance 216
- Open MPI Troubleshooting 218
- E–ULP Troubleshooting 225
- IB0054606-02 A E-7 225
- Troubleshooting SRP Issues 227
- Following is an example: 230
- E-14 IB0054606-02 A 232
- IB0054606-02 A E-15 233
- E-16 IB0054606-02 A 234
- IB0054606-02 A E-17 235
- Solution: 237
- E-20 IB0054606-02 A 238
- F–Write Combining 240
- F-2 IB0054606-02 A 240
- # ipath_mtrr 240
- F-4 IB0054606-02 A 242
- Restarting InfiniPath 244
- Program Name Function 245
- G–Commands and Files 247
- IB0054606-02 A G-5 247
- Sample output: 248
- G-20 IB0054606-02 A 262
- OS_version/updates 267
- G-30 IB0054606-02 A 272
- # modprobe -v ib_qib 272
- Common Tasks and Commands 274
- Function Command 275
- Table G-4. Useful Files 276
- G-38 IB0054606-02 A 280
- OpenFabrics 282
- Clusters 282
- Networking 282
- Other Software Packages 282
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