hola_adios: A C++ repository from fouriaux

  _ _           _            _       _ _           _ 
 (_) |__   ___ | | __ _     / \   __| (_) ___  ___| |
 | | '_ \ / _ \| |/ _` |   / _ \ / _` | |/ _ \/ __| |
 | | | | | (_) | | (_| |  / ___ \ (_| | | (_) \__ \_|
 \_|_| |_|\___/|_|\__,_| /_/   \_\__,_|_|\___/|___(_)

===============

HELLO WORLD LIKE EXAMPLES

0_hola_adios.cpp

Simple Write of ADIOS bp file using MPI Each Process writes his own block. results can be read using the following ADIOS utility:

$ADIOS_ROOT/bin/bpls --string -d data/0.bp /hola_msg byte /hola_msg {3} (0) "Ho"

1_hola_adios.cpp

Simple Read of different blocks for each Process and agregate results

2_hola_adios.cpp

Usage of Global Array. NOTES: in XML coordination-communicator attribute is mandatory must be specified on group that use global arrays (error message not clear...)

Note the difference when now dumping file:

$ADIOS_ROOT/bin/bpls --string --dump data/2.bp /hola_msg byte /hola_msg {12} ( 0) "!Hola Adios!"

3_hola_adios.cpp

Writing a Structure, HDF5 or ADIOS format

4_hola_adios.cpp

Multi-threaded example, crash ADIOS

5_hola_hdf5.cpp

Writing HDF5

6_hola

Illegally writing two times the same variable using XML API.

MORE ADVANCED SYNTHETIC EXAMPLES

7_report.cpp

This sample demonstrates that we can use ADIOS to write different sizes per rank

running sample : ./srun -n 4 ./7_report 100 0.1 Checking results

> bpls --dump no_xml
  integer  global_size  scalar
100 

  integer  batch_size   scalar
23 

  integer  offset       scalar
0 

  real     data         {100}
    ( 0)    0 0 0 0 0 0
    ( 6)    0 0 0 0 0 0
    (12)    0 0 0 0 0 0
    (18)    0 0 0 0 0 3
    (24)    3 3 3 3 3 3
    (30)    3 3 3 3 3 3
    (36)    3 3 3 3 3 3
    (42)    3 3 3 3 3 3
    (48)    3 3 2 2 2 2
    (54)    2 2 2 2 2 2
    (60)    2 2 2 2 2 2
    (66)    2 2 2 2 2 2
    (72)    2 2 2 2 2 1
    (78)    1 1 1 1 1 1
    (84)    1 1 1 1 1 1
    (90)    1 1 1 1 1 1
    (96)    1 1 1 1

8_report.cpp

This sample demonstrates that the API works correctly with automatic C scalar variables

9_report.cpp

This sample demonstrates the usage of the no XML API, from previous example

10_report.cpp

This sample demonstrate the usage of writing sub-blocks using the no XML interface. expected output: The trick here is to declare as many times as needed the array name using the no_xml api before using it

bpls --dump no_xml_several_chunk
  integer  global_size  scalar
96 

  integer  batch_size   scalar
12 

  integer  offset       scalar
48 

  real     data         {96}
    ( 0)    2 2 2 2 2 2
    ( 6)    2 2 2 2 2 2
    (12)    1 1 1 1 1 1
    (18)    1 1 1 1 1 1
    (24)    3 3 3 3 3 3
    (30)    3 3 3 3 3 3
    (36)    3 3 3 3 3 3
    (42)    3 3 3 3 3 3
    (48)    0 0 0 0 0 0
    (54)    0 0 0 0 0 0
    (60)    2 2 2 2 2 2
    (66)    2 2 2 2 2 2
    (72)    1 1 1 1 1 1
    (78)    1 1 1 1 1 1
    (84)    0 0 0 0 0 0
    (90)    0 0 0 0 0 0

fouriaux/hola_adios