Cypress CSC-1200T Guía de usuario Pagina 15
- Pagina / 124
- Tabla de contenidos
- MARCADORES
Valorado. / 5. Basado en revisión del cliente
Chapter 2. Using the Cray T3E at CSC 15
all files before running a job from the home directory tree to the local
T3E disk described below. The home directory is suitable only for small
initialization files and frequently used small programs. It is not intended
for extensive I/O operations or for large data sets.
There are three file storage areas available for users. Usually you need
not (and should not) refer to directories with full path names. Instead,
use the symbolic names (environment variables) listed in the following
table.
Symbol Where Lifetime Backup
$HOME Home directory (NFS-mounted) Unlimited Yes
$TMPDIR /tmp/$LOGNAME One day No
/tmp/jtmp.session-id Interact. session No
/nqstmp/nqs.job-id Batch job No
$WRKDIR /wrk/$LOGNAME Seven days No
The home directory ($HOME) tree is backed up regularly. This direc-
tory is meant for permanent files, with a maximum total size of a few
megabytes. It is a typical repository for source codes and small input
files.
The temporary directory ($TMPDIR) should be used by programs which
produce temporary, run-time files. Unless changed in the login or run
script, all files will typically be deleted upon the exit of a job. The size of
the disk storage is typically a few gigabytes and no backups are taken.
The environment variable $TMPDIR can have three different values de-
pending on the execution mode, or on settings in your login scripts.
An interactive session gets a unique session id. The variable $TMPDIR
points to the directory /tmp/jtmp.session-id, which can be used to
store temporary files. The files in this directory are deleted upon the
end of the session. Thus, you may find it more convenient to redeclare
this environment variable to be /tmp/$LOGNAME, where $LOGNAME is your
username.
In a batch job, the directory $TMPDIR gets its unique value from the
identification string of the job, and this directory is removed at the end
of the job.
The working directory ($WRKDIR) differs from the temporary directory
in the storage time. However, since no backup is taken, a disk crash may
destroy its contents. Untouched files will be deleted after seven days.
- 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
Relacionado con productos y manuales para Receptor Cypress CSC-1200T
Receptor Cypress COH-Tx Manual de usuario
(12 paginas)
(12 paginas)
Receptor Cypress CWHDI-TX Especificaciones
(12 paginas)
(12 paginas)
Receptor Cypress CH-107 TX Manual de usuario
(16 paginas)
(16 paginas)
Receptor Cypress CH-506RX Especificaciones
(16 paginas)
(16 paginas)
Receptor Cypress COH-Tx Especificaciones
(16 paginas)
(16 paginas)
Receptor Cypress COH-Rx1 Especificaciones
(16 paginas)
(16 paginas)
Receptor Cypress CWHDI-RX Especificaciones
(12 paginas)
(12 paginas)
Receptor Cypress CSC-1200T Manual de usuario
(12 paginas)
(12 paginas)
Receptor Cypress CA-DVI100R Manual de usuario
(12 paginas)
(12 paginas)
Receptor Cypress CH-506RX Especificaciones
(24 paginas)
(24 paginas)
© 2020, manymanuals.es. Todos los derechos reservados | 0.066 s |
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Comentarios a estos manuales