MPI 中的障碍：如何实施障碍以使进程相互等待
Barrier in MPI: How to implement barrier to make processes wait for one another
有什么方法可以在 MPI 代码中添加屏障。
我的意思是障碍，我希望所有不同的处理器首先完成一个点，然后从那里继续。那就是一个处理器必须等待其他处理器完成该区域的代码，然后才继续执行代码的其余部分。
例如，
int main()
{
.
.
.
//I want all my processors to do till this and
wait for other processers to complete till this point,
and then resume the remaining part
.
.
.
}
有没有办法在 MPIch 中做到这一点？
That is a processor must wait for the other processors to finish the
code till that region and then only proceed to the remaining part of
the code.
是的，你要找的就是套路MPI_Barrier:
Blocks until all processes in the communicator have reached this
routine.
Notes
Blocks the caller until all processes in the communicator have called
it; that is, the call returns at any process only after all members of
the communicator have entered the call.
要了解有关何时使用 MPI_Barrier 的更多信息，您可以阅读何时使用 I need to use MPI_Barrier()?
有什么方法可以在 MPI 代码中添加屏障。
我的意思是障碍，我希望所有不同的处理器首先完成一个点，然后从那里继续。那就是一个处理器必须等待其他处理器完成该区域的代码，然后才继续执行代码的其余部分。
例如，
int main()
{
.
.
.
//I want all my processors to do till this and
wait for other processers to complete till this point,
and then resume the remaining part
.
.
.
}
有没有办法在 MPIch 中做到这一点？
That is a processor must wait for the other processors to finish the code till that region and then only proceed to the remaining part of the code.
是的，你要找的就是套路MPI_Barrier:
Blocks until all processes in the communicator have reached this routine.
Notes
Blocks the caller until all processes in the communicator have called it; that is, the call returns at any process only after all members of the communicator have entered the call.
要了解有关何时使用 MPI_Barrier 的更多信息，您可以阅读何时使用 I need to use MPI_Barrier()?