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hwlocality_cudart(3)	   Library Functions Manual	  hwlocality_cudart(3)

NAME
       hwlocality_cudart - Interoperability with the CUDA Runtime API

SYNOPSIS
   Functions
       static int hwloc_cudart_get_device_pci_ids (hwloc_topology_t topology,
	   int idx, int	*domain, int *bus, int *dev)
       static int hwloc_cudart_get_device_cpuset (hwloc_topology_t topology,
	   int idx, hwloc_cpuset_t set)
       static hwloc_obj_t hwloc_cudart_get_device_pcidev (hwloc_topology_t
	   topology, int idx)
       static hwloc_obj_t hwloc_cudart_get_device_osdev_by_index
	   (hwloc_topology_t topology, unsigned	idx)

Detailed Description
       This interface offers ways to retrieve topology information about CUDA
       devices when using the CUDA Runtime API.

Function Documentation
   static int hwloc_cudart_get_device_cpuset (hwloc_topology_t topology, int
       idx, hwloc_cpuset_t set)	[inline],  [static]
       Get the CPU set of processors that are physically close to device idx.
       Store in	set the	CPU-set	describing the locality	of the CUDA device
       whose index is idx.

       Topology	topology and device idx	must match the local machine. I/O
       devices detection and the CUDA component	are not	needed in the
       topology.

       The function only returns the locality of the device. If	more
       information about the device is needed, OS objects should be used
       instead,	see hwloc_cudart_get_device_osdev_by_index().

       This function is	currently only implemented in a	meaningful way for
       Linux; other systems will simply	get a full cpuset.

       Returns
	   0 on	success.

	   -1 on error,	for instance if	device information could not be	found.

   static hwloc_obj_t hwloc_cudart_get_device_osdev_by_index (hwloc_topology_t
       topology, unsigned idx) [inline],  [static]
       Get the hwloc OS	device object corresponding to the CUDA	device whose
       index is	idx.

       Returns
	   The hwloc OS	device object describing the CUDA device whose index
	   is idx.

	   NULL	if none	could be found.

       The topology topology does not necessarily have to match	the current
       machine.	For instance the topology may be an XML	import of a remote
       host. I/O devices detection and the CUDA	component must be enabled in
       the topology. If	not, the locality of the object	may still be found
       using hwloc_cudart_get_device_cpuset().

       Note
	   The corresponding PCI device	object can be obtained by looking at
	   the OS device parent	object (unless PCI devices are filtered	out).

	   This	function is identical to
	   hwloc_cuda_get_device_osdev_by_index().

   static int hwloc_cudart_get_device_pci_ids (hwloc_topology_t	topology, int
       idx, int	* domain, int *	bus, int * dev)	[inline],  [static]
       Return the domain, bus and device IDs of	the CUDA device	whose index is
       idx. Device index idx must match	the local machine.

       Returns
	   0 on	success.

	   -1 on error,	for instance if	device information could not be	found.

   static hwloc_obj_t hwloc_cudart_get_device_pcidev (hwloc_topology_t
       topology, int idx) [inline],  [static]
       Get the hwloc PCI device	object corresponding to	the CUDA device	whose
       index is	idx.

       Returns
	   The hwloc PCI device	object describing the CUDA device whose	index
	   is idx.

	   NULL	if none	could be found.

       Topology	topology and device idx	must match the local machine. I/O
       devices detection must be enabled in topology topology. The CUDA
       component is not	needed in the topology.

Author
       Generated automatically by Doxygen for Hardware Locality	(hwloc)	from
       the source code.

Hardware Locality (hwloc)	Version	2.11.2		  hwlocality_cudart(3)

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