| Hardware Locality (hwloc)
    master-20250612.1317.gitd03ae8e67
    | 
 
 
 
   16 #ifndef HWLOC_CUDART_H 
   17 #define HWLOC_CUDART_H 
   20 #include "hwloc/autogen/config.h" 
   21 #include "hwloc/helper.h" 
   22 #ifdef HWLOC_LINUX_SYS 
   23 #include "hwloc/linux.h" 
   27 #include <cuda_runtime_api.h> 
   50 static __hwloc_inline 
int 
   52                                 int idx, 
int *domain, 
int *bus, 
int *dev)
 
   55   struct cudaDeviceProp prop;
 
   57   cerr = cudaGetDeviceProperties(&prop, idx);
 
   63 #if CUDA_VERSION >= 4000 
   64   *domain = prop.pciDomainID;
 
   70   *dev = prop.pciDeviceID;
 
   94 static __hwloc_inline 
int 
   98 #ifdef HWLOC_LINUX_SYS 
  100 #define HWLOC_CUDART_DEVICE_SYSFS_PATH_MAX 128 
  101   char path[HWLOC_CUDART_DEVICE_SYSFS_PATH_MAX];
 
  102   int domain, bus, dev;
 
  112   sprintf(path, 
"/sys/bus/pci/devices/%04x:%02x:%02x.0/local_cpus", (
unsigned) domain, (
unsigned) bus, (
unsigned) dev);
 
  136   int domain, bus, dev;
 
  168                     && !strncmp(
"cuda", osdev->
name, 4)
 
  169                     && 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?
union hwloc_obj_attr_u * attr
Object type-specific Attributes, may be NULL if no attribute value was found.
Definition: hwloc.h:506
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
int hwloc_cudart_get_device_pci_ids(hwloc_topology_t topology, int idx, int *domain, int *bus, int *dev)
Return the domain, bus and device IDs of the CUDA device whose index is idx.
Definition: cudart.h:51
char * name
Object-specific name if any. Mostly used for identifying OS devices and Misc objects where a name str...
Definition: hwloc.h:499
hwloc_obj_t hwloc_cudart_get_device_pcidev(hwloc_topology_t topology, int idx)
Get the hwloc PCI device object corresponding to the CUDA device whose index is idx.
Definition: cudart.h:134
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.
int hwloc_cudart_get_device_cpuset(hwloc_topology_t topology, int idx, hwloc_cpuset_t set)
Get the CPU set of processors that are physically close to device idx.
Definition: cudart.h:95
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
hwloc_obj_t hwloc_cudart_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: cudart.h:162
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_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