1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
|
*********
Attribute
*********
Attributes are extra information associated with a particular IO component.
They can be thought of as a very simplified ``Variable``, but with the goal of adding extra metadata.
The most common use is the addition of human-readable metadata (*e.g.* ``"experiment name"``, ``"date and time"``, ``"04,27,2017"``, or a schema).
Currently, ADIOS2 supports single values and arrays of primitive types (excluding ``complex<T>``) for the template type in the ``IO::DefineAttribute<T>`` and ``IO::InquireAttribute<T>`` function (in C++).
The data types supported for ADIOS2 ``Attributes`` are
.. code-block:: c++
std::string
char
signed char
unsigned char
short
unsigned short
int
unsigned int
long int
long long int
unsigned long int
unsigned long long int
float
double
long double
The returned object (``DefineAttribute`` or ``InquireAttribute``) only serves the purpose to inspect the current ``Attribute<T>`` information within code.
.. note:
Attributes are not forcibly associated to a particular variable in ADIOS2.
Developers are free to create associations through their own naming conventions.
|
