JUQUEEN - Prace Training Portal

More documents

Recommendations

Info

Guidance and Map File Example for Mapping considerations: Job size of 1 midplane with 16 tasks/node Default mapping: ABCDET = 4x4x4x4x2x16 Good for simulations with a 2D decomposition 256×32 or 64x128 For simulations with a 2D decomposition 128x64 chose TEDCBA A map file is a plane ASCII file The n th line contains the coordinate of the n th task 0 0 0 0 0 0 # task 0; coordinates ( 0, 0, 0, 0, 0, 0) 1 0 0 0 0 0 # task 1; coordinates ( 1, 0, 0, 0, 0, 0) 2 0 0 0 0 0 # task 2; coordinates ( 2, 0, 0, 0, 0, 0) [...] 68
MPI Tuning – BG/Q Extensions Blue Gene/Q specific MPI extensions (MPIX) – Only C/C++ interfaces available – Include header: #include Examples int MPIX_Torus_ndims(int *numdim) Determines the number of physical hardware dimensions int MPIX_Rank2torus(int rank, int *coords) Returns the physical coordinates of an MPI rank int MPIX_Torus2rank(int *coords, int *rank) Returns the MPI rank with the physical coordinates specified int MPIX_Hardware(MPIX_Hardware_t *hw) Returns information about the hardware the application is running on 69
Page 1 and 2:
JUQUEEN: Application Stack and Best
Page 3 and 4:
Outline Supercomputing@JSC Jülich
Page 5 and 6:
Jülich Supercomputing Centre (JSC)
Page 7 and 8:
Integration of JSC in Networks and
Page 9 and 10:
Supercomputer Systems@JSC: Dual Con
Page 11 and 12:
User Support @ JSC - Overview Cross
Page 13 and 14:
Outline Supercomputing@JSC Jülich
Page 15 and 16:
JUQUEEN - System Architecture IBM B
Page 17 and 18: Outline Supercomputing@JSC Jülich
Page 19 and 20: Accounting Billing - Jobs charged f
Page 21 and 22: Module Environment Module concept -
Page 23 and 24: Module Environment Six module categ
Page 25 and 26: Module Environment $ module help ar
Page 27 and 28: JUQUEEN - Application Stack Mathema
Page 29 and 30: Running Simulations - Batch System
Page 31 and 32: LoadLeveler - Job Command File ASCI
Page 33 and 34: LoadLeveler - Blue Gene/Q Keywords
Page 35 and 36: Running Simulations - runjob Comman
Page 37 and 38: Running Simulations - MPI/OpenMP Co
Page 39 and 40: Monitoring of Jobs • LoadLeveler
Page 43 and 44: Compilers for CN Language Compiler
Page 45 and 46: Basic Compiler Options - XL Compile
Page 47 and 48: MPI Message-Passing Interface - Bas
Page 49 and 50: Creating static Libraries Preferred
Page 53 and 54: Example: Compilers Diagnostics subr
Page 55 and 56: Quad floating Point eXtension unit
Page 57 and 58: IBM XL Compiler Support for QPX Usa
Page 59 and 60: IBM XL QPX Intrinsics • New intri
Page 61 and 62: Thread Level Speculation (TLS) •
Page 63 and 64: Thread Level Speculation Loop: save
Page 65 and 66: Transactional Memory • Enabling b
Page 67: Choosing Shape and Mapping • Shap
Page 71 and 72: Time (s) File I/O - Task-local File
Page 73 and 74: SIONlib - An Alternative to Task-Lo
Page 75 and 76: SIONlib - An Alternative to Task-Lo
Page 77 and 78: Performance Analysis Goal: Detectio
Page 79 and 80: Scalasca Toolset for callpath and c
Page 83 and 84: Using Debuggers Prepare executable:
Page 85: Thank You! JSC user and application
show all

JUQUEEN - Prace Training Portal

Create successful ePaper yourself

Delete template?

Save as template?