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5.23 acc_update_device – Update device memory from mapped host memory.

Description
This function updates the device copy from the previously mapped host memory. The host memory is specified with the host address a and a length of len bytes.

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_update_device(h_void *a, size_t len);

Fortran:

Interface: subroutine acc_update_device(a)
type, dimension(:[,:]...) :: a
Interface: subroutine acc_update_device(a, len)
type, dimension(:[,:]...) :: a
integer len

Reference:
OpenACC specification v2.0, section 3.2.23.