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hwlocality_cuda(3)	   Library Functions Manual	    hwlocality_cuda(3)

NAME
       hwlocality_cuda - Interoperability with the CUDA	Driver API

SYNOPSIS
   Functions
       static int hwloc_cuda_get_device_pci_ids	(hwloc_topology_t topology,
	   CUdevice cudevice, int *domain, int *bus, int *dev)
       static int hwloc_cuda_get_device_cpuset (hwloc_topology_t topology,
	   CUdevice cudevice, hwloc_cpuset_t set)
       static hwloc_obj_t hwloc_cuda_get_device_pcidev (hwloc_topology_t
	   topology, CUdevice cudevice)
       static hwloc_obj_t hwloc_cuda_get_device_osdev (hwloc_topology_t
	   topology, CUdevice cudevice)
       static hwloc_obj_t hwloc_cuda_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 Driver API.

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

       Topology	topology and device cudevice 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_cuda_get_device_osdev() and
       hwloc_cuda_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_cuda_get_device_osdev (hwloc_topology_t topology,
       CUdevice	cudevice) [inline],  [static]
       Get the hwloc OS	device object corresponding to CUDA device cudevice.

       Returns
	   The hwloc OS	device object that describes the given CUDA device
	   cudevice.

	   NULL	if none	could be found.

       Topology	topology and device cudevice must match	the local machine. 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_cuda_get_device_cpuset().

       Note
	   This	function cannot	work if	PCI devices are	filtered out.

	   The corresponding hwloc PCI device may be found by looking at the
	   result parent pointer (unless PCI devices are filtered out).

   static hwloc_obj_t hwloc_cuda_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.

       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_cudart_get_device_osdev_by_index().

   static int hwloc_cuda_get_device_pci_ids (hwloc_topology_t topology,
       CUdevice	cudevice, int *	domain,	int * bus, int * dev) [inline],
       [static]
       Return the domain, bus and device IDs of	the CUDA device	cudevice.
       Device cudevice 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_cuda_get_device_pcidev (hwloc_topology_t topology,
       CUdevice	cudevice) [inline],  [static]
       Get the hwloc PCI device	object corresponding to	the CUDA device
       cudevice.

       Returns
	   The hwloc PCI device	object describing the CUDA device cudevice.

	   NULL	if none	could be found.

       Topology	topology and device cudevice 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_cuda(3)

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