76 lines
3.1 KiB
Groff
76 lines
3.1 KiB
Groff
.TH "hwlocality_syntheticexport" 3 "Wed Dec 14 2022" "Version 2.9.0" "Hardware Locality (hwloc)" \" -*- nroff -*-
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.ad l
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.nh
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.SH NAME
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hwlocality_syntheticexport \- Exporting Topologies to Synthetic
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.SH SYNOPSIS
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.br
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.PP
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.SS "Enumerations"
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.in +1c
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.ti -1c
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.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 }"
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.br
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.in -1c
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.SS "Functions"
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.in +1c
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.ti -1c
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.RI "int \fBhwloc_topology_export_synthetic\fP (\fBhwloc_topology_t\fP topology, char *buffer, size_t buflen, unsigned long flags)"
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.br
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.in -1c
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.SH "Detailed Description"
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.PP
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.SH "Enumeration Type Documentation"
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.PP
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.SS "enum \fBhwloc_topology_export_synthetic_flags_e\fP"
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.PP
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Flags for exporting synthetic topologies\&. Flags to be given as a OR'ed set to \fBhwloc_topology_export_synthetic()\fP\&.
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.PP
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\fBEnumerator\fP
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.in +1c
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.TP
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\fB\fIHWLOC_TOPOLOGY_EXPORT_SYNTHETIC_FLAG_NO_EXTENDED_TYPES \fP\fP
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Export extended types such as L2dcache as basic types such as Cache\&. This is required if loading the synthetic description with hwloc < 1\&.9\&.
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.TP
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\fB\fIHWLOC_TOPOLOGY_EXPORT_SYNTHETIC_FLAG_NO_ATTRS \fP\fP
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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\&.
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.TP
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\fB\fIHWLOC_TOPOLOGY_EXPORT_SYNTHETIC_FLAG_V1 \fP\fP
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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\&.
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.TP
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\fB\fIHWLOC_TOPOLOGY_EXPORT_SYNTHETIC_FLAG_IGNORE_MEMORY \fP\fP
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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\&.
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.SH "Function Documentation"
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.PP
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.SS "int hwloc_topology_export_synthetic (\fBhwloc_topology_t\fP topology, char * buffer, size_t buflen, unsigned long flags)"
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.PP
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Export the topology as a synthetic string\&. At most \fCbuflen\fP characters will be written in \fCbuffer\fP, including the terminating \\0\&.
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.PP
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This exported string may be given back to \fBhwloc_topology_set_synthetic()\fP\&.
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.PP
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\fCflags\fP is a OR'ed set of \fBhwloc_topology_export_synthetic_flags_e\fP\&.
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.PP
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\fBReturns\fP
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.RS 4
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The number of characters that were written, not including the terminating \\0\&.
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.PP
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-1 if the topology could not be exported, for instance if it is not symmetric\&.
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.RE
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.PP
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\fBNote\fP
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.RS 4
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I/O and Misc children are ignored, the synthetic string only describes normal children\&.
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.PP
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A 1024-byte buffer should be large enough for exporting topologies in the vast majority of cases\&.
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.RE
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.PP
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.SH "Author"
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.PP
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Generated automatically by Doxygen for Hardware Locality (hwloc) from the source code\&.
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