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Il sistema di calcolo ad alte prestazioni del CINECA: evoluzione di ...

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Process<br />

A process is created by the operating system, and requires a fair amount of<br />

"overhe<strong>ad</strong>".<br />

Processes contain information about program resources and program execution<br />

state, inclu<strong>di</strong>ng:<br />

- Process ID, process group ID, user ID, and group ID<br />

- Environment<br />

- Working <strong>di</strong>rectory.<br />

- Program instructions<br />

- Registers<br />

- Stack<br />

- Heap<br />

- File descriptors<br />

- Signal actions<br />

- Shared libraries<br />

- Inter-process communication tools (such as message queues, pipes,<br />

semaphores, or shared memory).<br />

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