StarPU Handbook
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Data Structures | |
struct | starpu_disk_ops |
Macros | |
#define | STARPU_DISK_SIZE_MIN |
Functions | |
void | starpu_disk_close (unsigned node, void *obj, size_t size) |
void * | starpu_disk_open (unsigned node, void *pos, size_t size) |
int | starpu_disk_register (struct starpu_disk_ops *func, void *parameter, starpu_ssize_t size) |
Variables | |
struct starpu_disk_ops | starpu_disk_stdio_ops |
struct starpu_disk_ops | starpu_disk_hdf5_ops |
struct starpu_disk_ops | starpu_disk_unistd_ops |
struct starpu_disk_ops | starpu_disk_unistd_o_direct_ops |
struct starpu_disk_ops | starpu_disk_leveldb_ops |
int | starpu_disk_swap_node |
struct starpu_disk_ops |
Set of functions to manipulate data on disk. See Disk functions for more details.
Data Fields | ||
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void *(*)(void *parameter, starpu_ssize_t size) | plug |
Connect a disk memory at location |
void(*)(void *base) | unplug |
Disconnect a disk memory |
int(*)(unsigned node, void *base) | bandwidth |
Measure the bandwidth and the latency for the disk |
void *(*)(void *base, size_t size) | alloc |
Create a new location for data of size |
void(*)(void *base, void *obj, size_t size) | free |
Free a data |
void *(*)(void *base, void *pos, size_t size) | open |
Open an existing location of data, at a specific position |
void(*)(void *base, void *obj, size_t size) | close |
Close, without deleting it, a location of data |
int(*)(void *base, void *obj, void *buf, off_t offset, size_t size) | read |
Read |
int(*)(void *base, void *obj, const void *buf, off_t offset, size_t size) | write |
Write |
int(*)(void *base, void *obj, void **ptr, size_t *size, unsigned dst_node) | full_read |
Read all data from |
int(*)(void *base, void *obj, void *ptr, size_t size) | full_write |
Write data in |
void *(*)(void *base, void *obj, void *buf, off_t offset, size_t size) | async_write |
Asynchronously write |
void *(*)(void *base, void *obj, void *buf, off_t offset, size_t size) | async_read |
Asynchronously read |
void *(*)(void *base, void *obj, void **ptr, size_t *size, unsigned dst_node) | async_full_read |
Read all data from |
void *(*)(void *base, void *obj, void *ptr, size_t size) | async_full_write |
Write data in |
void *(*)(void *base_src, void *obj_src, off_t offset_src, void *base_dst, void *obj_dst, off_t offset_dst, size_t size) | copy |
Copy from offset |
void(*)(void *async_channel) | wait_request |
Wait for completion of request |
int(*)(void *async_channel) | test_request |
Test for completion of request |
void(*)(void *async_channel) | free_request |
Free the request allocated by a previous asynchronous read, write or copy. |
#define STARPU_DISK_SIZE_MIN |
Minimum size of a registered disk. The size of a disk is the last parameter of the function starpu_disk_register().
void starpu_disk_close | ( | unsigned | node, |
void * | obj, | ||
size_t | size ) |
Close an existing data opened with starpu_disk_open(). See Introduction for more details.
void * starpu_disk_open | ( | unsigned | node, |
void * | pos, | ||
size_t | size ) |
Open an existing file memory in a disk node. size
is the size of the file. pos
is the specific position dependent on the backend, given to the open
method of the disk operations. Return an opaque object pointer. See Introduction for more details.
int starpu_disk_register | ( | struct starpu_disk_ops * | func, |
void * | parameter, | ||
starpu_ssize_t | size ) |
Register a disk memory node with a set of functions to manipulate data. The plug
member of func
will be passed parameter
, and return a base
which will be passed to all func
methods.
SUCCESS: return the disk node.
FAIL: return an error code.
size
must be at least STARPU_DISK_SIZE_MIN bytes ! size
being negative means infinite size.
See Introduction for more details.
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extern |
Use the stdio library (fwrite, fread...) to read/write on disk.
Warning: It creates one file per allocation !
Do not support asynchronous transfers.
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extern |
Use the HDF5 library.
It doesn't support multiple opening from different processes.
You may only allow one process to write in the HDF5 file.
If HDF5 library is not compiled with –thread-safe you can't open more than one HDF5 file at the same time.
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extern |
Use the unistd library (write, read...) to read/write on disk.
Warning: It creates one file per allocation !
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extern |
Use the unistd library (write, read...) to read/write on disk with the O_DIRECT flag.
Warning: It creates one file per allocation !
Only available on Linux systems.
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extern |
Use the leveldb created by Google. More information at https://code.google.com/p/leveldb/ Do not support asynchronous transfers.
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extern |
Contain the node number of the disk swap, if set up through the STARPU_DISK_SWAP variable.