acc_memcpy_to_device (GNU libgomp)

Next: acc_memcpy_from_device – Copy device memory to host memory., Previous: acc_is_present – Indicate whether host variable / array is present on device., Up: OpenACC Runtime Library Routines [Contents][Index]

6.31 `acc_memcpy_to_device` – Copy host memory to device memory. ¶

Description

This function copies host memory specified by host address of data_host_src to device memory specified by the device address data_dev_dest for a length of bytes bytes.

C/C++:

Prototype:	`void acc_memcpy_to_device(d_void* data_dev_dest,`
	`h_void* data_host_src, size_t bytes);`
Prototype:	`void acc_memcpy_to_device_async(d_void* data_dev_dest,`
	`h_void* data_host_src, size_t bytes, int async_arg);`

Fortran:

Interface:	`subroutine acc_memcpy_to_device(data_dev_dest, &`
	`data_host_src, bytes)`
Interface:	`subroutine acc_memcpy_to_device_async(data_dev_dest, &`
	`data_host_src, bytes, async_arg)`
	`type(c_ptr), value :: data_dev_dest`
	`type(), dimension() :: data_host_src`
	`integer(c_size_t), value :: bytes`
	`integer(acc_handle_kind), value :: async_arg`

Reference:

OpenACC specification v2.6, section 3.2.31 OpenACC specification v3.3, section 3.2.26.