acc_copyout – Copy device memory to host memory.#

Description

This function copies mapped device memory to host memory which is specified by host address a for a length len bytes in C/C++.

In Fortran, two (2) forms are supported. In the first form, a specifies a contiguous array section. The second form a specifies a variable or array element and len specifies the length in bytes.

C/C++:

Prototype:	`acc_copyout(h_void *a, size_t len);`
Prototype:	`acc_copyout_async(h_void *a, size_t len, int async);`
Prototype:	`acc_copyout_finalize(h_void *a, size_t len);`
Prototype:	`acc_copyout_finalize_async(h_void *a, size_t len, int async);`

Fortran:

Interface:	`subroutine acc_copyout(a)`
	`type, dimension(:[,:]...) :: a`
Interface:	`subroutine acc_copyout(a, len)`
	`type, dimension(:[,:]...) :: a`
	`integer len`
Interface:	`subroutine acc_copyout_async(a, async)`
	`type, dimension(:[,:]...) :: a`
	`integer(acc_handle_kind) :: async`
Interface:	`subroutine acc_copyout_async(a, len, async)`
	`type, dimension(:[,:]...) :: a`
	`integer len`
	`integer(acc_handle_kind) :: async`
Interface:	`subroutine acc_copyout_finalize(a)`
	`type, dimension(:[,:]...) :: a`
Interface:	`subroutine acc_copyout_finalize(a, len)`
	`type, dimension(:[,:]...) :: a`
	`integer len`
Interface:	`subroutine acc_copyout_finalize_async(a, async)`
	`type, dimension(:[,:]...) :: a`
	`integer(acc_handle_kind) :: async`
Interface:	`subroutine acc_copyout_finalize_async(a, len, async)`
	`type, dimension(:[,:]...) :: a`
	`integer len`
	`integer(acc_handle_kind) :: async`

Reference:

OpenACC specification v2.6, section 3.2.22.