hwlocality_syntheticexport(Hardware Locality (hwlhwlocality_syntheticexport(3)
NAME
hwlocality_syntheticexport - Exporting Topologies to Synthetic
SYNOPSIS
Enumerations
enum hwloc_topology_export_synthetic_flags_e {
HWLOC_TOPOLOGY_EXPORT_SYNTHETIC_FLAG_NO_EXTENDED_TYPES,
HWLOC_TOPOLOGY_EXPORT_SYNTHETIC_FLAG_NO_ATTRS,
HWLOC_TOPOLOGY_EXPORT_SYNTHETIC_FLAG_V1,
HWLOC_TOPOLOGY_EXPORT_SYNTHETIC_FLAG_IGNORE_MEMORY }
Functions
int hwloc_topology_export_synthetic (hwloc_topology_t topology, char
*buffer, size_t buflen, unsigned long flags)
Detailed Description
Enumeration Type Documentation
enum hwloc_topology_export_synthetic_flags_e
Flags for exporting synthetic topologies. Flags to be given as a OR'ed
set to hwloc_topology_export_synthetic().
Enumerator
HWLOC_TOPOLOGY_EXPORT_SYNTHETIC_FLAG_NO_EXTENDED_TYPES
Export extended types such as L2dcache as basic types such as
Cache. This is required if loading the synthetic description
with hwloc < 1.9.
HWLOC_TOPOLOGY_EXPORT_SYNTHETIC_FLAG_NO_ATTRS
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.
HWLOC_TOPOLOGY_EXPORT_SYNTHETIC_FLAG_V1
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.
HWLOC_TOPOLOGY_EXPORT_SYNTHETIC_FLAG_IGNORE_MEMORY
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.
Function Documentation
int hwloc_topology_export_synthetic (hwloc_topology_t topology, char *
buffer, size_t buflen, unsigned long flags)
Export the topology as a synthetic string. At most buflen characters
will be written in buffer, including the terminating \0.
This exported string may be given back to
hwloc_topology_set_synthetic().
flags is a OR'ed set of hwloc_topology_export_synthetic_flags_e.
Returns
The number of characters that were written, not including the
terminating \0.
-1 if the topology could not be exported, for instance if it is not
symmetric.
Note
I/O and Misc children are ignored, the synthetic string only
describes normal children.
A 1024-byte buffer should be large enough for exporting topologies
in the vast majority of cases.
Author
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Version 2.7.0 Thu Jun 16 2022 hwlocality_syntheticexport(3)
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