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Portable Hardware Locality (hwloc) Documentation: v1.6.2

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CUDA Driver API Specific Functions


static inline int hwloc_cuda_get_device_pci_ids (hwloc_topology_t topology , CUdevice cudevice, int *domain, int *bus, int *dev)
static inline int hwloc_cuda_get_device_cpuset (hwloc_topology_t topology , CUdevice cudevice, hwloc_cpuset_t set)
static inline hwloc_obj_t hwloc_cuda_get_device_pcidev (hwloc_topology_t topology, CUdevice cudevice)

Detailed Description

Function Documentation

static inline int hwloc_cuda_get_device_cpuset ( hwloc_topology_t topology  ,
CUdevice  cudevice,
hwloc_cpuset_t  set 

Get the CPU set of logical processors that are physically close to device cudevice.

For the given CUDA Driver API device cudevice, read the corresponding kernel-provided cpumap file and return the corresponding CPU set. This function is currently only implemented in a meaningful way for Linux; other systems will simply get a full cpuset.

Topology topology must match the current machine.

static inline int hwloc_cuda_get_device_pci_ids ( hwloc_topology_t topology  ,
CUdevice  cudevice,
int *  domain,
int *  bus,
int *  dev 

Return the domain, bus and device IDs of device cudevice.

static inline hwloc_obj_t hwloc_cuda_get_device_pcidev ( hwloc_topology_t  topology,
CUdevice  cudevice 

Get the hwloc object for the PCI device corresponding to device cudevice.

For the given CUDA Runtime API device cudevice, return the hwloc PCI object containing the device. Returns NULL if there is none.

IO devices detection must be enabled in topology topology.