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.TH "hwlocality_syntheticexport" 3 "Version 2.12.0" "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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