type_node_list::t_node_list Type Reference

Public Attributes
integer	nb
	Number of nodes, overlapping regions included.
integer, dimension(:), allocatable	i
	First index of nodes.
integer, dimension(:), allocatable	j
	Second index of nodes.
integer, dimension(:), allocatable	k
	Third index of nodes.
integer	nbc
	Number of nodes, overlapping regions excluded.
type(t_mpi_exchange_list)	exchange
	Parallel communication information.

Detailed Description

Node_list packs selected node indexes in 1D arrays. This allows to efficiently loop over the subset of nodes. The attribute node_list::nb represent the total number of nodes in the numerical domain.

Things get more complex when one wants to exchange data between procs. The numerical domain is divided in 9 parts (27 in 3D) as follows:

┌──┬──────┬──┐
│-+│  ·+  │++│
├──┼──────┼──┤
│  │      │  │
│-·│  ··  │+·│
│  │      │  │
├──┼──────┼──┤
│--│  ·-  │+-│
└──┴──────┴──┘

The 1D array should be arranged in the following order:

┌─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬┈ ┈ ┈
  ···   -··   +··   ·-·   ·+·   --·   +-·   -+·   ++·
 ┈ ┈ ┈┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬┈ ┈ ┈
        ··-   -·-   +·-   ·--   ·+-   ---   +--   -+-   ++-
 ┈ ┈ ┈┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┐
        ··+   -·+   +·+   ·-+   ·++   --+   +-+   -++   +++

Where each block is ordered using classical loop ordering. Indexes of the central block is then easily acceded by obji(1:objnbc).

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The documentation for this type was generated from the following file:

• src/lib/core/data_structures/type_node_list.f90