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node_ops.h File Reference
`#include <starpu.h>`
`#include <common/config.h>`
`#include <datawizard/copy_driver.h>`

Go to the source code of this file.

## Data Structures

struct | _starpu_node_ops

## Typedefs

typedef int(* | copy_interface_func_t) (starpu_data_handle_t handle, void *src_interface, unsigned src_node, void *dst_interface, unsigned dst_node, struct _starpu_data_request *req)
typedef int(* | copy_data_t) (uintptr_t src_ptr, size_t src_offset, unsigned src_node, uintptr_t dst_ptr, size_t dst_offset, unsigned dst_node, size_t ssize, struct _starpu_async_channel *async_channel)
typedef int(* | copy2d_data_t) (uintptr_t src_ptr, size_t src_offset, unsigned src_node, uintptr_t dst_ptr, size_t dst_offset, unsigned dst_node, size_t blocksize, size_t numblocks, size_t ld_src, size_t ld_dst, struct _starpu_async_channel *async_channel)
typedef int(* | copy3d_data_t) (uintptr_t src_ptr, size_t src_offset, unsigned src_node, uintptr_t dst_ptr, size_t dst_offset, unsigned dst_node, size_t blocksize, size_t numblocks_1, size_t ld1_src, size_t ld1_dst, size_t numblocks_2, size_t ld2_src, size_t ld2_dst, struct _starpu_async_channel *async_channel)
typedef uintptr_t(* | map_t) (uintptr_t src, size_t src_offset, unsigned src_node, unsigned dst_node, size_t size, int *ret)
typedef int(* | unmap_t) (uintptr_t src, size_t src_offset, unsigned src_node, uintptr_t dst, unsigned dst_node, size_t size)
typedef int(* | update_map_t) (uintptr_t src, size_t src_offset, unsigned src_node, uintptr_t dst, size_t dst_offset, unsigned dst_node, size_t size)

## Functions

const char * | _starpu_node_get_prefix (enum starpu_node_kind kind)

## Typedef Documentation

## copy_interface_func_t

typedef int(* copy_interface_func_t) (starpu_data_handle_t handle, void *src_interface, unsigned src_node, void *dst_interface, unsigned dst_node, struct _starpu_data_request *req)

Request copying some data interface for handle `handle:` from interface `src_interface` that exists on node `src_node` to interface `dst_interface` that exists on node `dst_node`.

If `req` is non-NULL, this can be used to start an asynchronous copy, in which case -EAGAIN should be returned. Otherwise, 0 should be returned.

_starpu_copy_interface_any_to_any can be used as a generic version, that assumes that the data_interface implements the any_to_any method, and copy_data_t will be used to queue the actual transfers.

## copy_data_t

typedef int(* copy_data_t) (uintptr_t src_ptr, size_t src_offset, unsigned src_node, uintptr_t dst_ptr, size_t dst_offset, unsigned dst_node, size_t ssize, struct _starpu_async_channel *async_channel)

Request copying `ssize` bytes of data from `src_ptr` (plus offset `src_offset`) in node `src_node` to `dst_ptr` (plus offset `dst_offset`) in node `dst_node`.

If `async_channel` is non-NULL, this can be used to start an asynchronous copy, in which case -EAGAIN should be returned. Otherwise, 0 should be returned.

## copy2d_data_t

typedef int(* copy2d_data_t) (uintptr_t src_ptr, size_t src_offset, unsigned src_node, uintptr_t dst_ptr, size_t dst_offset, unsigned dst_node, size_t blocksize, size_t numblocks, size_t ld_src, size_t ld_dst, struct _starpu_async_channel *async_channel)

This is like copy_data_t, except that there are `numblocks` blocks of size `blocksize` bytes to be transferred. On the source, their respective starts are `ld_src` bytes apart, and on the destination their respective starts have to be `ld_dst` bytes apart. (leading dimension)

## copy3d_data_t

typedef int(* copy3d_data_t) (uintptr_t src_ptr, size_t src_offset, unsigned src_node, uintptr_t dst_ptr, size_t dst_offset, unsigned dst_node, size_t blocksize, size_t numblocks_1, size_t ld1_src, size_t ld1_dst, size_t numblocks_2, size_t ld2_src, size_t ld2_dst, struct _starpu_async_channel *async_channel)

This is like copy_data_t, except that there are `numblocks_2` metablocks to be transferred. On the source, their respective starts are `ld2_src` bytes apart, and on the destination their respective starts have to be `ld2_dst` bytes apart.

The metablocks are composed of `numblocks_1` blocks of size `blocksize` bytes. On the source, their respective starts are `ld1_src` bytes apart, and on the destination their respective starts have to be `ld1_dst` bytes apart.

## map_t

typedef uintptr_t(* map_t) (uintptr_t src, size_t src_offset, unsigned src_node, unsigned dst_node, size_t size, int *ret)

Map `size` bytes of data from `src` (plus offset `src_offset`) in node `src_node` on node `dst_node`. If successful, return the resulting pointer, otherwise fill *ret

## unmap_t

typedef int(* unmap_t) (uintptr_t src, size_t src_offset, unsigned src_node, uintptr_t dst, unsigned dst_node, size_t size)

Unmap `size` bytes of data from `src` (plus offset `src_offset`) in node `src_node` on node `dst_node`.

## update_map_t

typedef int(* update_map_t) (uintptr_t src, size_t src_offset, unsigned src_node, uintptr_t dst, size_t dst_offset, unsigned dst_node, size_t size)

Update cache coherency for the mapping of `size` bytes of data from `src` (plus offset `src_offset`) in node `src_node` on node `dst_node`.