GCA in 2d

GCA: A Massively Parallel Model

We had introduced the massively parallel global cellular automata (GCA) model. Parallel algorithms derived from applications can be mapped straight forward onto this model. In this model a cell in the cell field is dynamically connected (access pattern, dynamic neighbourhood) to other cells. The model can be implemented by pointers stored in the cell state. Via these pointers, each cell has rea...

The GCA-w Massively Parallel Model

Autocrine growth regulation of W12 and GCA cells in culture.

Two rat kidney cell lines transformed by two strains of ASV virus were investigated. It was demonstrated that these two lines (1) showed density-independent growth, (2) had a decreased requirement for serum in the culture medium, (3) had the ability to grow in a chemically defined medium (without serum), and the rate of this growth had increased with the increase in starting density of cells, a...

Management guidelines and outcome measures in giant cell arteritis (GCA).

Giant cell arteritis (GCA) is a common form of vasculitis that predominantly affects the elderly. Cranial symptoms and elevated inflammatory markers are suggestive of the condition and the diagnosis is usually established by temporal artery biopsy. Corticosteroids are the mainstay of treatment for GCA and prolonged therapy is often necessary. Disease relapses and steroid-related adverse effects...

Implementing APL-like data parallel functions on a GCA machine

We show how data parallel operations can be implemented on a Global Cellular Automaton (GCA). For this purpose we implement a number of frequently used functions of the language APL. APL has been chosen because of the ability to express matrix and vector operations in a short and concise manner. It is shown how various operations on vectors and matrices can be executed through the execution of ...