inthwloc_cudart_get_device_cpuset(hwloc_topology_ttopology,intidx,hwloc_cpuset_tset)[inline]
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.
hwloc_obj_thwloc_cudart_get_device_osdev_by_index(hwloc_topology_ttopology,unsignedidx)[inline]
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().
inthwloc_cudart_get_device_pci_ids(hwloc_topology_ttopology,intidx,int*domain,int*bus,int*dev)[inline]
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.
hwloc_obj_thwloc_cudart_get_device_pcidev(hwloc_topology_ttopology,intidx)[inline]
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.