acc_create – Allocate device memory and map it to host memory.#

Description

This function allocates device memory and maps it to host memory specified by the host address a with a length of len bytes. In C/C++, the function returns the device address of the allocated device memory.

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:	`void acc_create(h_void a, size_t len);`
Prototype:	`void acc_create_async(h_void a, size_t len, int async);`

Fortran:

Interface:	`subroutine acc_create(a)`
	`type, dimension(:[,:]...) :: a`
Interface:	`subroutine acc_create(a, len)`
	`type, dimension(:[,:]...) :: a`
	`integer len`
Interface:	`subroutine acc_create_async(a, async)`
	`type, dimension(:[,:]...) :: a`
	`integer(acc_handle_kind) :: async`
Interface:	`subroutine acc_create_async(a, len, async)`
	`type, dimension(:[,:]...) :: a`
	`integer len`
	`integer(acc_handle_kind) :: async`

Reference:

OpenACC specification v2.6, section 3.2.21.