Cypress CSC-1200T Guide de l'utilisateur Page 101
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- Table des matières
- MARQUE LIVRES
Noté. / 5. Basé sur avis des utilisateurs
Chapter 9. Programming tools 101
The source code includes the VAMPIRtrace API calls by the preprocessor
macro USE_VT. It is recommended to include the definitions in the file
$PAL_ROOT/include/VT.inc with the option -I. The program may be
run now, e.g., by the command
t3e% mpprun -n8 loadbal < input
If the program is run as a batch job (see Chapter 8), the command use
vampir has to be included in the jobfile.
By default, the trace file is generated between the calls MPI_INIT and
MPI_FINALIZE. Tracing may also be disabled and enabled by the API
calls VTTRACEOFF and VTTRACEON.
VAMPIRtrace gathers information of activities, i.e., process states with a
start and stop time. Activities are identified by a class name and a sym-
bolic name. A class can contain an arbitrary number of activities. Ac-
tivities can also be nested like subroutines calls. MPI calls automatically
belong to the class MPI. The class and symbolic names are subsequently
used by the VAMPIR visualization tool.
The following Fortran code shows how to define a section of code to
belong to the class Application with the symbolic name initialization.
The integer value 1 is a user-chosen label which must be applied in a
globally consistent manner with and only with the initialization tag.
The variable ierr is an error indicator.
INTEGER :: ierr
CALL VTSYMDEF(1, ’initialization’, ’Application’, ierr)
CALL VTBEGIN(1, ierr)
... initialization code to be marked ...
CALL VTEND(1, ierr)
In Fortran 90, it is a good idea to define symbolic names for the tag
integers, e.g., in a separate MODULE vt by
INTEGER, PARAMETER :: INIT=1
A corresponding C code segment is
VT_symdef(1, "initialization", "Application");
VT_begin(1);
... initialization code to be marked ...
VT_end(1);
9.5.2 The VAMPIR visualization tool
The trace file must be transferred to Caper for the analysis with the X
Window System based VAMPIR visualization tool. The VAMPIR environ-
ment on Caper must be set up using the command
use vampir
- Cray T3E 1
- User’s Guide 1
- Cray T3E User’s Guide 3 3
- Contents 4
- Contents 5 5
- B Glossary 113 6
- Bibliography 118 6
- Index 120 6
- Introduction 7
- 1.2 Usage policy 8
- 1.3 Overview of the system 9
- 1.4 Programming environment 9
- 10 Cray T3E User’s Guide 10
- Chapter 1. Introduction 11 11
- 12 Cray T3E User’s Guide 12
- Using the Cray T3E at CSC 13
- 2.2 Files 14
- 2.3 Editing files 16
- 2.5 Executing in batch mode 17
- 2.6 More information 18
- The Cray T3E system 20
- 3.2 Distributed memory 21
- 3.3 Processing elements 21
- 3.4 Processor architecture 23
- 3.5 Local memory hierarchy 24
- 26 Cray T3E User’s Guide 26
- Processing Element 27
- I/O Controller 27
- Interconnection 27
- Network 27
- 3.9 File systems 28
- 3.10 Resource monitoring 29
- 30 Cray T3E User’s Guide 30
- 3.11 More information 31
- Program development 32
- 4.3.1 BLAS 34
- 4.3.2 LAPACK 34
- 4.3.3 BLACS 35
- 4.3.4 PBLAS and ScaLAPACK 35
- 4.3.5 Details 35
- 36 Cray T3E User’s Guide 36
- 4.6 More information 38
- Fortran programming 40
- 5.2 Basic usage 41
- 5.4 Compiler options 42
- 5.5 Optimization options 42
- 5.6 Optimizing for cache 44
- 5.7 Compiler directives 45
- 5.8 Fortran 90 modules 48
- 5.9 Source code preprocessing 49
- 5.10 More information 51
- C and C++ programming 52
- 6.2 The C compiler 53
- 6.3 Calling Fortran from C 54
- 6.4 C compiler options 55
- #pragma _CRI symmetric var 59
- #pragma _CRI unroll [n] 59
- 6.6 The C++ compiler 61
- 6.7 More information 61
- Interprocess communication 62
- 7.2.1 Format of the MPI calls 63
- 7.2.2 Some MPI routines 64
- 7.2.3 An example of using MPI 64
- 7.2.5 MPI data types 67
- 7.3.1 Using PVM on the T3E 68
- #include <mpp/shmem.h> 71
- INCLUDE ’mpp/shmem.fh’ 71
- 7.4.2 Data addresses 72
- 7.4.4 Reduction routines 74
- 7.4.6 Example of using SHMEM 76
- 78 Cray T3E User’s Guide 78
- 0:c= 10121416 78
- 1:c= 2468 78
- 80 Cray T3E User’s Guide 80
- Batch queuing system 81
- 82 Cray T3E User’s Guide 82
- # QSUB -l p_mpp_t=7000 82
- 8.3 Status of the NQE job 83
- 84 Cray T3E User’s Guide 84
- 8.4 Deleting an NQE batch job 86
- 8.5 Queues 86
- 8.6 More information 87
- Programming tools 88
- 9.2 Program Browser 89
- 9.3 Debugging programs 92
- 9.3.2 Examining core files 93
- 94 Cray T3E User’s Guide 94
- 9.4.1 MPP Apprentice 95
- 9.4.2 The appview command 98
- 9.4.3 PAT 98
- 9.5.1 The VAMPIRtrace library 100
- 102
- 9.5.3 More information 103
- Miscellaneous notes 104
- 10.1.3 The CPU clock timer 105
- 10.1.4 Example of timing 106
- 108 Cray T3E User’s Guide 108
- 10.4 More information 110
- About CSC 111
- 112 Cray T3E User’s Guide 112
- Glossary 113
- 114 Cray T3E User’s Guide 114
- Appendix B. Glossary 115 115
- Metacomputer Environment 116
- Bibliography 118
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