Threads can run in parallel on a multiprocessor machine.

traditional process has a multiple thread of control.

Identifying tasks is divide program into tasks that can run in series

a ....... system has well defined, fixed time constraints

Task Parallelism refers to the distribution of data across multiple cores

User threads are managed with OS support

Kernel threads are supported and managed directly by the OS.

in One-to-One Model Only one user thread can access the kernel at a time.

in Many-to-One Model Threads can run in parallel on multi-core systems.

in One-to-One Model Multiple threads can access the kernel at a given time

OS creates a kernel thread per user thread (can burden performance)

OS creates a set of kernel threads (less than or equal to user threads)

When a thread makes a blocking system call, another thread can run.

Most operating systems use

Fork-join. works well for tasks that are asynchronous (cooperating)

The server creates a thread for each request

in Implicit Threading Programmers identify threads that can run in parallel.

can adjust the number of threads in the pool.

Cancellation of a target thread can be asynchronous or Synchronous.