Can we use fork join in Verilog?

Can we use fork join in Verilog?

SystemVerilog provides support for parallel or concurrent threads through fork join construct. Multiple procedural blocks can be spawned off at the same time using fork and join .

What is fork join in SystemVerilog?

In a simple SystemVerilog fork join , the main thread waits until all the child threads have finished execution. This means the fork will hang the simulation if any of the child threads run forever and never complete. SystemVerilog also provides a variation to the original with a fork and join_any .

Why fork and join is used in Verilog?

The fork-join construct enables the creation of concurrent processes from each of its parallel blocks. All the blocks get the same start time and the finish time is controlled by the type of join construct used. Formal syntax for a parallel block.

What is fork Join_any How do you get fork join Join_any to work with a loop?

If you want to wait for all of the processes fork’ed by the fork-jone_none to complete, you put a wait fork; statement after the for loop. The wait fork statements waits for all child processes of the current thread to complete.

Is Fork join synthesizable?

Fork-join blocks are not synthesizable while begin-end blocks are synthesizable.

What is a fork join pool?

A ForkJoinPool provides the entry point for submissions from non- ForkJoinTask clients, as well as management and monitoring operations.

Is fork join synthesizable?

What is the use of wait fork?

wait fork allows the main process to wait until all forked processes are over. This is useful in cases where the main process has to spawn multiple threads, and perform some function before waiting for all threads to finish.

How do you wait in SystemVerilog?

How to trigger and wait for an event?

1. Named events can be triggered using -> or ->> operator.
2. Processes can wait for an event using @ operator or .triggered.

Why fork join is non-synthesizable?

It is not synthesizable since it waits for all the statements to be executed within it and blocks other processes until it completes.

What is synthesizable and non-synthesizable?

For something to be synthesizable it has to be able to be represented in hardware, i.e. using logic gates. An example of something that is non-synthesizable would be initializing a design with values assigned to signals or registers. This cannot be translated to hardware, therefor is non-synthesizable.

How do you use fork join?

Each time a task is divided, you call the fork() method to place the first subtask in the current thread’s deque, and then you call the compute() method on the second subtask to recursively process it. Finally, to get the result of the first subtask you call the join() method on this first subtask.