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Portable Hardware Locality (hwloc) Documentation: v1.5

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OpenFabrics-Specific Functions

Functions

static inline int hwloc_ibv_get_device_cpuset (hwloc_topology_t topology , struct ibv_device *ibdev, hwloc_cpuset_t set)
static inline hwloc_obj_t hwloc_ibv_get_device_osdev_by_name (hwloc_topology_t topology, const char *ibname)

Detailed Description

Function Documentation

static inline int hwloc_ibv_get_device_cpuset ( hwloc_topology_t topology  ,
struct ibv_device *  ibdev,
hwloc_cpuset_t  set 
)
static

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

For the given OpenFabrics device ibdev, 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 hwloc_obj_t hwloc_ibv_get_device_osdev_by_name ( hwloc_topology_t  topology,
const char *  ibname 
)
static

Get the hwloc OS device object corresponding to the OpenFabrics device named ibname.

For the OpenFabrics device whose name is ibname, return the hwloc OS device object describing the device. Returns NULL if there is none.

The name ibname is usually obtained from ibv_get_device_name().

IO devices detection must be enabled in topology topology.

The topology does not necessary have to match the current machine. For instance the topology may be an XML import of a remote host.

Note
The corresponding PCI device object can be obtained by looking at the OS device parent object.