1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
|
.TH "hwlocality_opencl" 3 "Thu Dec 13 2018" "Version 1.11.12" "Hardware Locality (hwloc)" \" -*- nroff -*-
.ad l
.nh
.SH NAME
hwlocality_opencl
.SH SYNOPSIS
.br
.PP
.SS "Functions"
.in +1c
.ti -1c
.RI "static int \fBhwloc_opencl_get_device_cpuset\fP (\fBhwloc_topology_t\fP topology, cl_device_id device, \fBhwloc_cpuset_t\fP set)"
.br
.ti -1c
.RI "static \fBhwloc_obj_t\fP \fBhwloc_opencl_get_device_osdev_by_index\fP (\fBhwloc_topology_t\fP topology, unsigned platform_index, unsigned device_index)"
.br
.ti -1c
.RI "static \fBhwloc_obj_t\fP \fBhwloc_opencl_get_device_osdev\fP (\fBhwloc_topology_t\fP topology, cl_device_id device)"
.br
.in -1c
.SH "Detailed Description"
.PP
This interface offers ways to retrieve topology information about OpenCL devices\&.
.PP
Only the AMD OpenCL interface currently offers useful locality information about its devices\&.
.SH "Function Documentation"
.PP
.SS "static int hwloc_opencl_get_device_cpuset (\fBhwloc_topology_t\fP topology, cl_device_id device, \fBhwloc_cpuset_t\fP set)\fC [inline]\fP, \fC [static]\fP"
.PP
Get the CPU set of logical processors that are physically close to OpenCL device \fCdevice\fP\&. Return the CPU set describing the locality of the OpenCL device \fCdevice\fP\&.
.PP
Topology \fCtopology\fP and device \fCdevice\fP must match the local machine\&. I/O devices detection and the OpenCL component are not needed in the topology\&.
.PP
The function only returns the locality of the device\&. If more information about the device is needed, OS objects should be used instead, see \fBhwloc_opencl_get_device_osdev()\fP and \fBhwloc_opencl_get_device_osdev_by_index()\fP\&.
.PP
This function is currently only implemented in a meaningful way for Linux with the AMD OpenCL implementation; other systems will simply get a full cpuset\&.
.SS "static \fBhwloc_obj_t\fP hwloc_opencl_get_device_osdev (\fBhwloc_topology_t\fP topology, cl_device_id device)\fC [inline]\fP, \fC [static]\fP"
.PP
Get the hwloc OS device object corresponding to OpenCL device \fCdevice\fP\&. Return the hwloc OS device object that describes the given OpenCL device \fCdevice\fP\&. Return NULL if there is none\&.
.PP
Topology \fCtopology\fP and device \fCdevice\fP must match the local machine\&. I/O devices detection and the OpenCL component must be enabled in the topology\&. If not, the locality of the object may still be found using \fBhwloc_opencl_get_device_cpuset()\fP\&.
.PP
\fBNote:\fP
.RS 4
The corresponding hwloc PCI device may be found by looking at the result parent pointer\&.
.RE
.PP
.SS "static \fBhwloc_obj_t\fP hwloc_opencl_get_device_osdev_by_index (\fBhwloc_topology_t\fP topology, unsigned platform_index, unsigned device_index)\fC [inline]\fP, \fC [static]\fP"
.PP
Get the hwloc OS device object corresponding to the OpenCL device for the given indexes\&. Return the OS device object describing the OpenCL device whose platform index is \fCplatform_index\fP, and whose device index within this platform if \fCdevice_index\fP\&. Return NULL if there is none\&.
.PP
The topology \fCtopology\fP does not necessarily have to match the current machine\&. For instance the topology may be an XML import of a remote host\&. I/O devices detection and the OpenCL component must be enabled in the topology\&.
.PP
\fBNote:\fP
.RS 4
The corresponding PCI device object can be obtained by looking at the OS device parent object\&.
.RE
.PP
.SH "Author"
.PP
Generated automatically by Doxygen for Hardware Locality (hwloc) from the source code\&.
|
