Hardware Locality (hwloc): myriexpress.h Source File

Hardware Locality (hwloc) 1.11.13

myriexpress.h
1 /*
2 * Copyright © 2010-2014 Inria. All rights reserved.
3 * Copyright © 2011 Cisco Systems, Inc. All rights reserved.
4 * See COPYING in top-level directory.
5 */
6
15 #ifndef HWLOC_MYRIEXPRESS_H
16 #define HWLOC_MYRIEXPRESS_H
17
18 #include <hwloc.h>
19 #include <hwloc/autogen/config.h>
20
21 #include <myriexpress.h>
22
23
24 #ifdef __cplusplus
25 extern "C" {
26 #endif
27
28
49 static __hwloc_inline int
50 hwloc_mx_board_get_device_cpuset(hwloc_topology_t topology,
51 unsigned id, hwloc_cpuset_t set)
52 {
53 uint32_t in, out;
54
55 if (!hwloc_topology_is_thissystem(topology)) {
56 errno = EINVAL;
57 return -1;
58 }
59
60 in = id;
61 if (mx_get_info(NULL, MX_NUMA_NODE, &in, sizeof(in), &out, sizeof(out)) != MX_SUCCESS) {
62 errno = EINVAL;
63 return -1;
64 }
65
66 if (out != (uint32_t) -1) {
67 hwloc_obj_t obj = NULL;
68 while ((obj = hwloc_get_next_obj_by_type(topology, HWLOC_OBJ_NUMANODE, obj)) != NULL)
69 if (obj->os_index == out) {
70 hwloc_bitmap_copy(set, obj->cpuset);
71 goto out;
72 }
73 }
74 /* fallback to the full topology cpuset */
75 hwloc_bitmap_copy(set, hwloc_topology_get_complete_cpuset(topology));
76
77 out:
78 return 0;
79 }
80
93 static __hwloc_inline int
94 hwloc_mx_endpoint_get_device_cpuset(hwloc_topology_t topology,
95 mx_endpoint_t endpoint, hwloc_cpuset_t set)
96 {
97 uint64_t nid;
98 uint32_t nindex, eid;
99 mx_endpoint_addr_t eaddr;
100
101 if (mx_get_endpoint_addr(endpoint, &eaddr) != MX_SUCCESS) {
102 errno = EINVAL;
103 return -1;
104 }
105
106 if (mx_decompose_endpoint_addr(eaddr, &nid, &eid) != MX_SUCCESS) {
107 errno = EINVAL;
108 return -1;
109 }
110
111 if (mx_nic_id_to_board_number(nid, &nindex) != MX_SUCCESS) {
112 errno = EINVAL;
113 return -1;
114 }
115
116 return hwloc_mx_board_get_device_cpuset(topology, nindex, set);
117 }
118
122 #ifdef __cplusplus
123 } /* extern "C" */
124 #endif
125
126
127 #endif /* HWLOC_MYRIEXPRESS_H */
hwloc_get_next_obj_by_type
static hwloc_obj_t hwloc_get_next_obj_by_type(hwloc_topology_t topology, hwloc_obj_type_t type, hwloc_obj_t prev)
Returns the next object of type type.
hwloc_topology_get_complete_cpuset
static hwloc_const_cpuset_t hwloc_topology_get_complete_cpuset(hwloc_topology_t topology)
Get complete CPU set.
Definition: helper.h:803
hwloc_topology_t
struct hwloc_topology * hwloc_topology_t
Topology context.
Definition: hwloc.h:633
hwloc_cpuset_t
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:132
hwloc_bitmap_copy
void 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::cpuset
hwloc_cpuset_t cpuset
CPUs covered by this object.
Definition: hwloc.h:421
hwloc_obj::os_index
unsigned os_index
OS-provided physical index number. It is not guaranteed unique across the entire machine, except for PUs and NUMA nodes.
Definition: hwloc.h:362
hwloc_mx_endpoint_get_device_cpuset
static int hwloc_mx_endpoint_get_device_cpuset(hwloc_topology_t topology, mx_endpoint_t endpoint, hwloc_cpuset_t set)
Get the CPU set of logical processors that are physically close the MX endpoint endpoint.
Definition: myriexpress.h:94
hwloc_mx_board_get_device_cpuset
static int hwloc_mx_board_get_device_cpuset(hwloc_topology_t topology, unsigned id, hwloc_cpuset_t set)
Get the CPU set of logical processors that are physically close the MX board id.
Definition: myriexpress.h:50
HWLOC_OBJ_NUMANODE
NUMA node. An object that contains memory that is directly and byte-accessible to the host processors...
Definition: hwloc.h:190
hwloc_obj
Structure of a topology object.
Definition: hwloc.h:358
hwloc_topology_is_thissystem
int hwloc_topology_is_thissystem(hwloc_topology_t restrict topology)
Does the topology context come from this system?