Craftsblog455

1. Decomposer
2. Decompose Definition
3. List Of Decomposers Organisms
4. Decomposer Definition

Decompose definition is - to separate into constituent parts or elements or into simpler compounds. How to use decompose in a sentence. Synonym Discussion of decompose. intransitive, transitive decompose (something) (into something) (chemistry) (of a chemical compound) to break down something into smaller and simpler parts; to break a substance down into smaller and simpler parts. Water decomposes into oxygen and hydrogen. As the waste materials decompose, they produce methane gas.

Decomposer

It decomposes a case to be run in parallel. The syntax of the command is the following

It requires a dictionary named decomposeParDict is present in the system subdirectory of the case. The syntax of the dictionary is the following:

• numberOfSubdomains specifies the number of processor (or cores) you want to use to solve your case.
• method specifies the method used to decompose the domain. Available methods are:
  • simple: it decomposes the domain in equal parts according in the directions specified in the corresponding subdictionary simpleCoeffs. For example, do decompose a case in 4 parts in the x direction, n has to be set to (4 1 1). To split the domain into 8 parts, 4 in the x direction and 2 in the z direction, n has to be set to (4 1 2).

• • hierarchical: it's the same than simple, but the user can specify the order according to which the decomposition is done.
  • metis: it decomposes the domain using the METIS algorithm, which tries to minimize the communication between processors. It is possible to specify weights for the different processors if the parallelised system is composed by machines with different performances.
  • manual: it lets the user directly specify the allocation of each cell to a particular processor.

• delta is the cell skew factor. It's default value is 0.001.

It is possible to distribute the case on different disks, by setting the distributed option to yes and by setting the root for the case directories with the following syntax:

where <nRoots> is the number of root directories specified, <root0> is the root directory for the node 0, <root1> the root directory for the node 1, and so on.

Syntax

Description of the illustration decompose.gif

Decompose Definition

Purpose

DECOMPOSE is valid only for Unicode characters. DECOMPOSE takes as its argument a string in any datatype and returns a Unicode string after decomposition in the same character set as the input. For example, an o-umlaut code point will be returned as the 'o' code point followed by an umlaut code point.

List Of Decomposers Organisms

• string can be any of the datatypes CHAR, VARCHAR2, NCHAR, NVARCHAR2, CLOB, or NCLOB.

• CANONICAL causes canonical decomposition, which allows recomposition (for example, with the COMPOSE function) to the original string. This is the default.

• COMPATIBILITY causes decomposition in compatibility mode. In this mode, recomposition is not possible. This mode is useful, for example, when decomposing half-width and full-width katakana characters, where recomposition might not be desirable without external formatting or style information.

Decomposer Definition

CLOB and NCLOB values are supported through implicit conversion. If char is a character LOB value, it is converted to a VARCHAR value before the COMPOSE operation. The operation will fail if the size of the LOB value exceeds the supported length of the VARCHAR in the particular development environment.

See Also:

Oracle Database Globalization Support Guide for information on Unicode character sets and character semantics

Examples

The following example ss the string 'Châteaux' into its component code points:

Note:

The results of this example can vary depending on the character set of your operating system.