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- .TH "hwlocality_syntheticexport" 3 "Thu Sep 7 2023" "Version 2.9.3" "Hardware Locality (hwloc)" \" -*- nroff -*-
- .ad l
- .nh
- .SH NAME
- hwlocality_syntheticexport \- Exporting Topologies to Synthetic
- .SH SYNOPSIS
- .br
- .PP
- .SS "Enumerations"
- .in +1c
- .ti -1c
- .RI "enum \fBhwloc_topology_export_synthetic_flags_e\fP { \fBHWLOC_TOPOLOGY_EXPORT_SYNTHETIC_FLAG_NO_EXTENDED_TYPES\fP, \fBHWLOC_TOPOLOGY_EXPORT_SYNTHETIC_FLAG_NO_ATTRS\fP, \fBHWLOC_TOPOLOGY_EXPORT_SYNTHETIC_FLAG_V1\fP, \fBHWLOC_TOPOLOGY_EXPORT_SYNTHETIC_FLAG_IGNORE_MEMORY\fP }"
- .br
- .in -1c
- .SS "Functions"
- .in +1c
- .ti -1c
- .RI "int \fBhwloc_topology_export_synthetic\fP (\fBhwloc_topology_t\fP topology, char *buffer, size_t buflen, unsigned long flags)"
- .br
- .in -1c
- .SH "Detailed Description"
- .PP
- .SH "Enumeration Type Documentation"
- .PP
- .SS "enum \fBhwloc_topology_export_synthetic_flags_e\fP"
- .PP
- Flags for exporting synthetic topologies\&. Flags to be given as a OR'ed set to \fBhwloc_topology_export_synthetic()\fP\&.
- .PP
- \fBEnumerator\fP
- .in +1c
- .TP
- \fB\fIHWLOC_TOPOLOGY_EXPORT_SYNTHETIC_FLAG_NO_EXTENDED_TYPES \fP\fP
- Export extended types such as L2dcache as basic types such as Cache\&. This is required if loading the synthetic description with hwloc < 1\&.9\&.
- .TP
- \fB\fIHWLOC_TOPOLOGY_EXPORT_SYNTHETIC_FLAG_NO_ATTRS \fP\fP
- Do not export level attributes\&. Ignore level attributes such as memory/cache sizes or PU indexes\&. This is required if loading the synthetic description with hwloc < 1\&.10\&.
- .TP
- \fB\fIHWLOC_TOPOLOGY_EXPORT_SYNTHETIC_FLAG_V1 \fP\fP
- Export the memory hierarchy as expected in hwloc 1\&.x\&. Instead of attaching memory children to levels, export single NUMA node child as normal intermediate levels, when possible\&. This is required if loading the synthetic description with hwloc 1\&.x\&. However this may fail if some objects have multiple local NUMA nodes\&.
- .TP
- \fB\fIHWLOC_TOPOLOGY_EXPORT_SYNTHETIC_FLAG_IGNORE_MEMORY \fP\fP
- Do not export memory information\&. Only export the actual hierarchy of normal CPU-side objects and ignore where memory is attached\&. This is useful for when the hierarchy of CPUs is what really matters, but it behaves as if there was a single machine-wide NUMA node\&.
- .SH "Function Documentation"
- .PP
- .SS "int hwloc_topology_export_synthetic (\fBhwloc_topology_t\fP topology, char * buffer, size_t buflen, unsigned long flags)"
- .PP
- Export the topology as a synthetic string\&. At most \fCbuflen\fP characters will be written in \fCbuffer\fP, including the terminating \\0\&.
- .PP
- This exported string may be given back to \fBhwloc_topology_set_synthetic()\fP\&.
- .PP
- \fCflags\fP is a OR'ed set of \fBhwloc_topology_export_synthetic_flags_e\fP\&.
- .PP
- \fBReturns\fP
- .RS 4
- The number of characters that were written, not including the terminating \\0\&.
- .PP
- -1 if the topology could not be exported, for instance if it is not symmetric\&.
- .RE
- .PP
- \fBNote\fP
- .RS 4
- I/O and Misc children are ignored, the synthetic string only describes normal children\&.
- .PP
- A 1024-byte buffer should be large enough for exporting topologies in the vast majority of cases\&.
- .RE
- .PP
- .SH "Author"
- .PP
- Generated automatically by Doxygen for Hardware Locality (hwloc) from the source code\&.
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