GAP (HAP commands) - Chapter 4: Basic functionality for parallel computation

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4 Basic functionality for parallel computation
4.1 Six Core Functions
4.1-1 ChildCreate
4.1-2 ChildCreate

### 4 Basic functionality for parallel computation

This page covers the functions used for parallel computation in the book An Invitation to Computational Homotopy.

#### 4.1 Six Core Functions

##### 4.1-1 ChildCreate

`‣ ChildCreate`( ) | ( function )

`‣ ChildProcess`( str ) | ( function )

`‣ ChildProcess`( str ) | ( function )

`‣ ChildProcess`( str ) | ( function )

Starts a GAP session as a child process and returns a stream to the child process. If no argument is given then the child process is created on the local machine; otherwise the argument should be: (1) \(str\)="computer.address.ie" the address of a remote computer for which ssh has been configured to require no password from the user; (2) \(str\)=["-m", "100000M", "-T"] a list of GAP command line options; (3) \(str\)="computer.ac.wales", ["-m", "100000M", "-T"] the address of a computer followed by a list of command line options.

Examples:

##### 4.1-2 ChildCreate

`‣ ChildCreate`( ) | ( function )

`‣ ChildProcess`( str ) | ( function )

`‣ ChildProcess`( str ) | ( function )

`‣ ChildProcess`( str ) | ( function )

Starts a GAP session as a child process and returns a stream to the child process. If no argument is given then the child process is created on the local machine; otherwise the argument should be: (1) \(str\)="computer.address.ie" the address of a remote computer for which ssh has been configured to require no password from the user; (2) \(str\)=["-m", "100000M", "-T"] a list of GAP command line options; (3) \(str\)="computer.ac.wales", ["-m", "100000M", "-T"] the address of a computer followed by a list of command line options.

Examples:

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