20#include "hwloc/autogen/config.h"
21#include "hwloc/helper.h"
23#include "hwloc/linux.h"
46static __hwloc_inline
int
48 CUdevice cudevice,
int *domain,
int *bus,
int *dev)
52#if CUDA_VERSION >= 4000
53 cres = cuDeviceGetAttribute(domain, CU_DEVICE_ATTRIBUTE_PCI_DOMAIN_ID, cudevice);
54 if (cres != CUDA_SUCCESS) {
61 cres = cuDeviceGetAttribute(bus, CU_DEVICE_ATTRIBUTE_PCI_BUS_ID, cudevice);
62 if (cres != CUDA_SUCCESS) {
66 cres = cuDeviceGetAttribute(dev, CU_DEVICE_ATTRIBUTE_PCI_DEVICE_ID, cudevice);
67 if (cres != CUDA_SUCCESS) {
91static __hwloc_inline
int
97#define HWLOC_CUDA_DEVICE_SYSFS_PATH_MAX 128
98 char path[HWLOC_CUDA_DEVICE_SYSFS_PATH_MAX];
99 int domainid, busid, deviceid;
109 sprintf(path,
"/sys/bus/pci/devices/%04x:%02x:%02x.0/local_cpus", domainid, busid, deviceid);
133 int domain, bus, dev;
160 int domain, bus, dev;
168 if (strncmp(osdev->
name,
"cuda", 4))
205 && !strncmp(
"cuda", osdev->
name, 4)
206 && atoi(osdev->
name + 4) == (
int) idx)
hwloc_bitmap_t hwloc_cpuset_t
A CPU set is a bitmap whose bits are set according to CPU physical OS indexes.
Definition hwloc.h:140
@ HWLOC_OBJ_OSDEV_COPROC
Operating system co-processor device. For instance "opencl0d0" for a OpenCL device,...
Definition hwloc.h:353
@ HWLOC_OBJ_PCI_DEVICE
PCI device (filtered out by default).
Definition hwloc.h:269
struct hwloc_topology * hwloc_topology_t
Topology context.
Definition hwloc.h:692
int hwloc_topology_is_thissystem(hwloc_topology_t restrict topology)
Does the topology context come from this system?
hwloc_const_cpuset_t hwloc_topology_get_complete_cpuset(hwloc_topology_t topology)
Get complete CPU set.
static hwloc_obj_t hwloc_get_next_osdev(hwloc_topology_t topology, hwloc_obj_t prev)
Get the next OS device in the system.
Definition helper.h:1194
static hwloc_obj_t hwloc_get_pcidev_by_busid(hwloc_topology_t topology, unsigned domain, unsigned bus, unsigned dev, unsigned func)
Find the PCI device object matching the PCI bus id given domain, bus device and function PCI bus id.
Definition helper.h:1157
int hwloc_bitmap_iszero(hwloc_const_bitmap_t bitmap)
Test whether bitmap bitmap is empty.
int hwloc_bitmap_copy(hwloc_bitmap_t dst, hwloc_const_bitmap_t src)
Copy the contents of bitmap src into the already allocated bitmap dst.
int hwloc_linux_read_path_as_cpumask(const char *path, hwloc_bitmap_t set)
Convert a linux kernel cpumask file path into a hwloc bitmap set.
static 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 the CUDA device cudevice.
Definition cuda.h:47
static hwloc_obj_t hwloc_cuda_get_device_pcidev(hwloc_topology_t topology, CUdevice cudevice)
Get the hwloc PCI device object corresponding to the CUDA device cudevice.
Definition cuda.h:131
static hwloc_obj_t hwloc_cuda_get_device_osdev_by_index(hwloc_topology_t topology, unsigned idx)
Get the hwloc OS device object corresponding to the CUDA device whose index is idx.
Definition cuda.h:199
static hwloc_obj_t hwloc_cuda_get_device_osdev(hwloc_topology_t topology, CUdevice cudevice)
Get the hwloc OS device object corresponding to CUDA device cudevice.
Definition cuda.h:157
static int hwloc_cuda_get_device_cpuset(hwloc_topology_t topology, CUdevice cudevice, hwloc_cpuset_t set)
Get the CPU set of processors that are physically close to device cudevice.
Definition cuda.h:92
Structure of a topology object.
Definition hwloc.h:396
char * name
Object-specific name if any. Mostly used for identifying OS devices and Misc objects where a name str...
Definition hwloc.h:408
hwloc_obj_type_t type
Type of object.
Definition hwloc.h:398
union hwloc_obj_attr_u * attr
Object type-specific Attributes, may be NULL if no attribute value was found.
Definition hwloc.h:415
struct hwloc_obj * parent
Parent, NULL if root (Machine object)
Definition hwloc.h:446
struct hwloc_obj_attr_u::hwloc_pcidev_attr_s pcidev
struct hwloc_obj_attr_u::hwloc_osdev_attr_s osdev
unsigned char dev
Definition hwloc.h:639
unsigned char func
Definition hwloc.h:639
unsigned short domain
Definition hwloc.h:635
unsigned char bus
Definition hwloc.h:639
hwloc_obj_osdev_type_t type
Definition hwloc.h:666