| Hardware Locality (hwloc)
    master-20250612.1317.gitd03ae8e67
    | 
 
 
 
   20 #include "hwloc/autogen/config.h" 
   21 #include "hwloc/helper.h" 
   22 #ifdef HWLOC_LINUX_SYS 
   23 #include "hwloc/linux.h" 
   49 static __hwloc_inline 
int 
   51                               CUdevice cudevice, 
int *domain, 
int *bus, 
int *dev)
 
   55 #if CUDA_VERSION >= 4000 
   56   cres = cuDeviceGetAttribute(domain, CU_DEVICE_ATTRIBUTE_PCI_DOMAIN_ID, cudevice);
 
   57   if (cres != CUDA_SUCCESS) {
 
   64   cres = cuDeviceGetAttribute(bus, CU_DEVICE_ATTRIBUTE_PCI_BUS_ID, cudevice);
 
   65   if (cres != CUDA_SUCCESS) {
 
   69   cres = cuDeviceGetAttribute(dev, CU_DEVICE_ATTRIBUTE_PCI_DEVICE_ID, cudevice);
 
   70   if (cres != CUDA_SUCCESS) {
 
   97 static __hwloc_inline 
int 
  101 #ifdef HWLOC_LINUX_SYS 
  103 #define HWLOC_CUDA_DEVICE_SYSFS_PATH_MAX 128 
  104   char path[HWLOC_CUDA_DEVICE_SYSFS_PATH_MAX];
 
  105   int domainid, busid, deviceid;
 
  115   sprintf(path, 
"/sys/bus/pci/devices/%04x:%02x:%02x.0/local_cpus", domainid, busid, deviceid);
 
  139   int domain, bus, dev;
 
  166         int domain, bus, dev;
 
  174                 if (strncmp(osdev->
name, 
"cuda", 4))
 
  211                     && !strncmp(
"cuda", osdev->
name, 4)
 
  212                     && atoi(osdev->
name + 4) == (
int) idx)
 
  
int hwloc_bitmap_iszero(hwloc_const_bitmap_t bitmap)
Test whether bitmap bitmap is empty.
@ HWLOC_OBJ_OSDEV_GPU
Operating system GPU device. For instance ":0.0" for a GL display, "card0" for a Linux DRM device,...
Definition: hwloc.h:388
hwloc_const_cpuset_t hwloc_topology_get_complete_cpuset(hwloc_topology_t topology)
Get complete CPU set.
struct hwloc_obj_attr_u::hwloc_osdev_attr_s osdev
int hwloc_topology_is_thissystem(hwloc_topology_t restrict topology)
Does the topology context come from this system?
hwloc_obj_type_t type
Type of object.
Definition: hwloc.h:489
@ HWLOC_OBJ_PCI_DEVICE
PCI device (filtered out by default).
Definition: hwloc.h:319
union hwloc_obj_attr_u * attr
Object type-specific Attributes, may be NULL if no attribute value was found.
Definition: hwloc.h:506
unsigned char func
Function number (t in the PCI BDF notation xxxx:yy:zz.t).
Definition: hwloc.h:727
struct hwloc_topology * hwloc_topology_t
Topology context.
Definition: hwloc.h:777
Structure of a topology object.
Definition: hwloc.h:487
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:1290
hwloc_obj_osdev_types_t types
OR'ed set of at least one hwloc_obj_osdev_type_e.
Definition: hwloc.h:760
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:137
char * name
Object-specific name if any. Mostly used for identifying OS devices and Misc objects where a name str...
Definition: hwloc.h:499
unsigned char bus
Bus number (yy in the PCI BDF notation xxxx:yy:zz.t).
Definition: hwloc.h:725
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.
struct hwloc_obj * parent
Parent, NULL if root (Machine object)
Definition: hwloc.h:537
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:1249
struct hwloc_obj_attr_u::hwloc_pcidev_attr_s pcidev
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.
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:163
@ HWLOC_OBJ_OSDEV_COPROC
Operating system co-processor device. For instance "opencl0d0" for a OpenCL device,...
Definition: hwloc.h:395
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:161
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:205
unsigned char dev
Device number (zz in the PCI BDF notation xxxx:yy:zz.t).
Definition: hwloc.h:726
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:98
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:50
unsigned int domain
Domain number (xxxx in the PCI BDF notation xxxx:yy:zz.t).
Definition: hwloc.h:724