QLogic OFED+ Host Software User Guide, Rev. B

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4–Running QLogic MPI on QLogic Adapters QLogic MPI Limitations • Several misconfigurations (such as mixed use of 32-bit/64-bit executables) are detected by the runtime. • A formatted list containing information useful for high-level MPI application profiling is provided by using the -print-stats option with mpirun. Statistics include minimum, maximum, and median values for message transmission protocols as well as a more detailed information for expected and unexpected message reception. See “MPI Stats” on page F-30 for more information and a sample output listing. NOTE: The TotalView ® debugger can be used with the Open MPI supplied in this release. Consult the TotalView documentation for more information. QLogic MPI Limitations The current version of QLogic MPI has the following limitations: • There are no C++ bindings to MPI; use the extern C MPI function calls. • In MPI-IO file I/O calls in the Fortran binding, offset, or displacement arguments are limited to 32 bits. Thus, for example, the second argument of MPI_File_seek must be between -2 31 and 2 31 -1, and the argument to MPI_File_read_at must be between 0 and 2 32 -1. 4-28 D000046-005 B
5 Using Other MPIs Introduction This section provides information on using other MPI implementations. Support for multiple high-performance MPI implementations has been added. Most implementations run over both PSM and OpenFabrics Verbs (see Table 5-1). Table 5-1. Other Supported MPI Implementations MPI Implementation Runs Over Compiled With Comments Open MPI 1.5 PSM Verbs GCC, Intel, PGI, PathScale Provides some MPI-2 functionality (one-sided operations and dynamic processes). Available as part of the QLogic download. Can be managed by mpi-selector. MVAPICH version 1.2 PSM Verbs GCC, Intel, PGI, PathScale Provides MPI-1 functionality. Available as part of the QLogic download. Can be managed by mpi-selector. MVAPICH2 version 1.4 PSM Verbs GCC, Intel, PGI, PathScale Provides MPI-2 Functionality. Can be managed by MPI-Selector. Platform MPI 7 and HP-MPI 2.3 PSM Verbs GCC (default) Provides some MPI-2 functionality (one-sided operations). Available for purchase from HP. D000046-005 B 5-1
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QLogic OFED+ Host Software User Gui
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Table of Contents 1 Introduction Ho
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Preface The QLogic OFED+ Host Softw
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Preface Technical Support Technical
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1 Introduction How this Guide is Or
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1-Introduction Interoperability QLo
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2 Step-by-Step Cluster Setup and MP
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3 TrueScale Cluster Setup and Admin
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3-TrueScale Cluster Setup and Admin
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Page 111 and 112: 7 Dispersive Routing Infiniband use
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Page 115 and 116: 8 gPXE gPXE Setup gPXE is an open s
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Page 131 and 132: A mpirun Options Summary This secti
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Page 139 and 140: B Benchmark Programs Several MPI pe
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B-Benchmark Programs Benchmark 2: M
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B-Benchmark Programs Benchmark 4: M
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C VirtualNIC Interface Configuratio
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C-VirtualNIC Interface Configuratio
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D SRP Configuration SRP Configurati
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D-SRP Configuration QLogic SRP Conf
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D-SRP Configuration OFED SRP Config
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E Integration with a Batch Queuing
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E-Integration with a Batch Queuing
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E-Integration with a Batch Queuing
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F Troubleshooting This appendix des
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F-Troubleshooting Kernel and Initia
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F-Troubleshooting Kernel and Initia
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F-Troubleshooting OpenFabrics and I
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F-Troubleshooting Performance Issue
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F-Troubleshooting QLogic MPI Troubl
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G ULP Troubleshooting Troubleshooti
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G-ULP Troubleshooting Troubleshooti
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H Write Combining Introduction Writ
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H-Write Combining MTRR Mapping and
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I Useful Programs and Files The mos
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I-Useful Programs and Files Summary
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I-Useful Programs and Files Common
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J Recommended Reading Reference mat
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Corporate Headquarters QLogic Corpo
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