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MulticoreBSP for C
Version 2.0.4
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Structure representing the machine hardware information. More...
#include <mcutil.h>
Data Fields | |
| bool | Tset |
| Whether the threads field has been set manually. More... | |
| bool | Aset |
| Whether the affinity field as been set manually. More... | |
| bool | Cset |
| Whether the cores field has been set manually. More... | |
| bool | TpCset |
| Whether the threads_per_core field has been set manually. More... | |
| bool | TNset |
| Whether the thread numbering field has been set manually. More... | |
| bool | Pset |
| Whether the manual pinning field has been set. More... | |
| bool | Rset |
| Whether the reserved cores field has been set. More... | |
| bool | UTset |
| Whether the unused_threads_per_core field has been set. More... | |
| bool | CPFset |
| Whether the checkpoint_frequency field has been overridden. More... | |
| bool | SCFset |
| Whether the safe_checkpoint_frequency field has been overridden. More... | |
| size_t | threads |
| The total number of threads available for computation. More... | |
| enum mcbsp_affinity_mode | affinity |
| Currently active affinity strategy. More... | |
| size_t | cores |
| The number of hardware cores available on the current system. More... | |
| size_t | threads_per_core |
| The number of hardware threads per core on the system MulticoreBSP is executing on. More... | |
| enum mcbsp_thread_numbering | thread_numbering |
| Currently active thread-numbering method. More... | |
| size_t * | manual_affinity |
| Pointer to the manually-defined affinity definition. More... | |
| size_t | num_reserved_cores |
| Number of entries in the reserved_cores array. More... | |
| size_t * | reserved_cores |
| Pointer to the manually-defined reversed-cores list. More... | |
| size_t | unused_threads_per_core |
| Number of threads per core that should remain unused. More... | |
| size_t | cp_f |
| The default checkpointing frequency. More... | |
| size_t | safe_cp_f |
| The checkpointing frequency used when trouble is imminent. More... | |
Structure representing the machine hardware information.
| enum mcbsp_affinity_mode mcbsp_util_machine_info::affinity |
Currently active affinity strategy.
| bool mcbsp_util_machine_info::Aset |
Whether the affinity field as been set manually.
| size_t mcbsp_util_machine_info::cores |
The number of hardware cores available on the current system.
MulticoreBSP can not (as of yet) determine this information reliably by itself. A user can set this value manually at run-time via mcbsp_set_available_cores, or supply a value via `machine.info'.
| size_t mcbsp_util_machine_info::cp_f |
The default checkpointing frequency.
Used for automatic checkpointing. If this value is 0, then automatic checkpointing is disabled.` Otherwise, it will checkpoint every cp_f bsp_syncs.
| bool mcbsp_util_machine_info::CPFset |
Whether the checkpoint_frequency field has been overridden.
| bool mcbsp_util_machine_info::Cset |
Whether the cores field has been set manually.
| size_t* mcbsp_util_machine_info::manual_affinity |
Pointer to the manually-defined affinity definition.
Required when MCBSP_AFFINITY is set to MANUAL.
The list should be of length threads, and consist out of unique numbers between 0 and threads-1 (inclusive), where C is the number of available hardware threads on the current machine.
| size_t mcbsp_util_machine_info::num_reserved_cores |
Number of entries in the reserved_cores array.
| bool mcbsp_util_machine_info::Pset |
Whether the manual pinning field has been set.
| size_t* mcbsp_util_machine_info::reserved_cores |
Pointer to the manually-defined reversed-cores list.
This list is of length <= cores, and contains unique entries in-between 0 and cores-1 (inclusive). It represents the core-IDs that are reserved by the system (or other software), thus forbidding MulticoreBSP to pin threads to that core.
| bool mcbsp_util_machine_info::Rset |
Whether the reserved cores field has been set.
| size_t mcbsp_util_machine_info::safe_cp_f |
The checkpointing frequency used when trouble is imminent.
Used for automatic checkpointing. This frequency overrides the default cp_f when the MulticoreBSP for C run-time detects an imminent hardware failure, such as a back-up power supply failing.
| bool mcbsp_util_machine_info::SCFset |
Whether the safe_checkpoint_frequency field has been overridden.
| enum mcbsp_thread_numbering mcbsp_util_machine_info::thread_numbering |
Currently active thread-numbering method.
| size_t mcbsp_util_machine_info::threads |
The total number of threads available for computation.
| size_t mcbsp_util_machine_info::threads_per_core |
The number of hardware threads per core on the system MulticoreBSP is executing on.
| bool mcbsp_util_machine_info::TNset |
Whether the thread numbering field has been set manually.
| bool mcbsp_util_machine_info::TpCset |
Whether the threads_per_core field has been set manually.
| bool mcbsp_util_machine_info::Tset |
Whether the threads field has been set manually.
| size_t mcbsp_util_machine_info::unused_threads_per_core |
Number of threads per core that should remain unused.
May be used to disable hyperthreading.
| bool mcbsp_util_machine_info::UTset |
Whether the unused_threads_per_core field has been set.
1.8.5