|
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>
47 static __hwloc_inline int
49 int idx, int *domain, int *bus, int *dev)
52 struct cudaDeviceProp prop;
54 cerr = cudaGetDeviceProperties(&prop, idx);
60 #if CUDA_VERSION >= 4000
61 *domain = prop.pciDomainID;
67 *dev = prop.pciDeviceID;
88 static __hwloc_inline int
92 #ifdef HWLOC_LINUX_SYS
94 #define HWLOC_CUDART_DEVICE_SYSFS_PATH_MAX 128
95 char path[HWLOC_CUDART_DEVICE_SYSFS_PATH_MAX];
106 sprintf(path, "/sys/bus/pci/devices/%04x:%02x:%02x.0/local_cpus", ( unsigned) domain, ( unsigned) bus, ( unsigned) dev);
130 int domain, bus, dev;
162 && !strncmp( "cuda", osdev-> name, 4)
163 && atoi(osdev-> name + 4) == ( int) idx)
static 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:156
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:1151
struct hwloc_obj_attr_u::hwloc_osdev_attr_s osdev
static 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:128
struct hwloc_topology * hwloc_topology_t Topology context. Definition: hwloc.h:678
@ HWLOC_OBJ_OSDEV_COPROC Operating system co-processor device. For instance "mic0" for a Xeon Phi (MIC) on Linux,... Definition: hwloc.h:340
union hwloc_obj_attr_u * attr Object type-specific Attributes, may be NULL if no attribute value was found. Definition: hwloc.h:403
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
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_cudart_get_device_cpuset(hwloc_topology_t topology, int idx, hwloc_cpuset_t set) Get the CPU set of logical processors that are physically close to device idx. Definition: cudart.h:89
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:1114
Structure of a topology object. Definition: hwloc.h:384
int hwloc_bitmap_iszero(hwloc_const_bitmap_t bitmap) Test whether bitmap bitmap is empty.
int hwloc_topology_is_thissystem(hwloc_topology_t restrict topology) Does the topology context come from this system?
static 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:48
char * name Object-specific name if any. Mostly used for identifying OS devices and Misc objects where a name str... Definition: hwloc.h:396
hwloc_obj_osdev_type_t type Definition: hwloc.h:652
hwloc_const_cpuset_t hwloc_topology_get_complete_cpuset(hwloc_topology_t topology) Get complete CPU set.
|
|
|