.TH "hwlocality_levelzero" 3 "Version 2.10.0rc2" "Hardware Locality (hwloc)" \" -*- nroff -*-
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.SH NAME
hwlocality_levelzero \- Interoperability with the oneAPI Level Zero interface\&.
.SH SYNOPSIS
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.PP
.SS "Functions"

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.RI "static int \fBhwloc_levelzero_get_device_cpuset\fP (\fBhwloc_topology_t\fP topology, ze_device_handle_t device, \fBhwloc_cpuset_t\fP set)"
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.RI "static \fBhwloc_obj_t\fP \fBhwloc_levelzero_get_device_osdev\fP (\fBhwloc_topology_t\fP topology, ze_device_handle_t device)"
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.SH "Detailed Description"
.PP 
This interface offers ways to retrieve topology information about devices managed by the Level Zero API\&. 
.SH "Function Documentation"
.PP 
.SS "static int hwloc_levelzero_get_device_cpuset (\fBhwloc_topology_t\fP topology, ze_device_handle_t 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 the Level Zero device \fCdevice\fP\&. Store in \fCset\fP the CPU-set describing the locality of the Level Zero device \fCdevice\fP\&.
.PP
Topology \fCtopology\fP and device \fCdevice\fP must match the local machine\&. The Level Zero library must have been initialized with Sysman enabled (by calling zesInit(0) if supported, or by setting ZES_ENABLE_SYSMAN=1 in the environment)\&. I/O devices detection and the Level Zero 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_levelzero_get_device_osdev()\fP\&.
.PP
This function is currently only implemented in a meaningful way for Linux; other systems will simply get a full cpuset\&.
.PP
\fBReturns\fP
.RS 4
0 on success\&. 
.PP
-1 on error, for instance if device information could not be found\&. 
.RE
.PP

.SS "static \fBhwloc_obj_t\fP hwloc_levelzero_get_device_osdev (\fBhwloc_topology_t\fP topology, ze_device_handle_t device)\fC [inline]\fP, \fC [static]\fP"

.PP
Get the hwloc OS device object corresponding to Level Zero device \fCdevice\fP\&. 
.PP
\fBReturns\fP
.RS 4
The hwloc OS device object that describes the given Level Zero device \fCdevice\fP\&. 
.PP
\fCNULL\fP if none could be found\&.
.RE
.PP
Topology \fCtopology\fP and device \fCdv_ind\fP must match the local machine\&. I/O devices detection and the Level Zero component must be enabled in the topology\&. If not, the locality of the object may still be found using \fBhwloc_levelzero_get_device_cpuset()\fP\&.
.PP
\fBNote\fP
.RS 4
The corresponding hwloc PCI device may be found by looking at the result parent pointer (unless PCI devices are filtered out)\&. 
.RE
.PP

.SH "Author"
.PP 
Generated automatically by Doxygen for Hardware Locality (hwloc) from the source code\&.