Affinity
Example
Query affinity domain information:
julia> aff = LIKWID.get_affinity()
LIKWID.AffinityDomains
├ numberOfSocketDomains: 2
├ numberOfNumaDomains: 2
├ numberOfProcessorsPerSocket: 24
├ numberOfCacheDomains: 2
├ numberOfCoresPerCache: 12
├ numberOfProcessorsPerCache: 24
├ numberOfAffinityDomains: 9
└ domains: ... (9 elements)
julia> aff.domains
9-element Vector{LIKWID.AffinityDomain}:
LIKWID.AffinityDomain("N", 48, 24, [0, 24, 1, 25, 2, 26, 3, 27, 4, 28 … 19, 43, 20, 44, 21, 45, 22, 46, 23, 47])
LIKWID.AffinityDomain("S0", 24, 12, [0, 24, 1, 25, 2, 26, 3, 27, 4, 28 … 7, 31, 8, 32, 9, 33, 10, 34, 11, 35])
LIKWID.AffinityDomain("S1", 24, 12, [12, 36, 13, 37, 14, 38, 15, 39, 16, 40 … 19, 43, 20, 44, 21, 45, 22, 46, 23, 47])
LIKWID.AffinityDomain("D0", 24, 12, [0, 24, 1, 25, 2, 26, 3, 27, 4, 28 … 7, 31, 8, 32, 9, 33, 10, 34, 11, 35])
LIKWID.AffinityDomain("D1", 24, 12, [12, 36, 13, 37, 14, 38, 15, 39, 16, 40 … 19, 43, 20, 44, 21, 45, 22, 46, 23, 47])
LIKWID.AffinityDomain("C0", 24, 12, [0, 24, 1, 25, 2, 26, 3, 27, 4, 28 … 7, 31, 8, 32, 9, 33, 10, 34, 11, 35])
LIKWID.AffinityDomain("C1", 24, 12, [12, 36, 13, 37, 14, 38, 15, 39, 16, 40 … 19, 43, 20, 44, 21, 45, 22, 46, 23, 47])
LIKWID.AffinityDomain("M0", 24, 12, [0, 24, 1, 25, 2, 26, 3, 27, 4, 28 … 7, 31, 8, 32, 9, 33, 10, 34, 11, 35])
LIKWID.AffinityDomain("M1", 24, 12, [12, 36, 13, 37, 14, 38, 15, 39, 16, 40 … 19, 43, 20, 44, 21, 45, 22, 46, 23, 47])Index
LIKWID.cpustr_to_cpulistLIKWID.finalize_affinityLIKWID.get_affinityLIKWID.get_processor_idLIKWID.get_processor_id_glibcLIKWID.get_processor_idsLIKWID.init_affinityLIKWID.pinprocessLIKWID.pinthreadLIKWID.pinthreadsLIKWID.AffinityDomainLIKWID.AffinityDomains
Functions
LIKWID.init_affinity — FunctionInitialize LIKWIDs affinity domain module.
LIKWID.finalize_affinity — FunctionClose and finalize LIKWIDs affinity domain module.
LIKWID.get_affinity — FunctionQuery affinity domain information
LIKWID.cpustr_to_cpulist — FunctionTransform a valid cpu string in LIKWID syntax into a list of CPU IDs
LIKWID.get_processor_id — FunctionReturns the ID of the currently executing CPU.
LIKWID.get_processor_ids — FunctionGet the CPU core IDs of the Julia threads.
LIKWID.get_processor_id_glibc — FunctionReturns the ID of the currently executing CPU via glibcs sched_getcpu function.
LIKWID.pinprocess — Functionpinprocess(cpuid::Integer)Pins the current process to the CPU given as cpuid. Returns true on success.
LIKWID.pinthread — Functionpinthread(cpuid::Integer)Pins the current thread to the CPU given as cpuid. Returns true on success.
LIKWID.pinthreads — FunctionPin all Julia threads to the CPU cores coreids. Note that length(coreids) == Threads.nthreads() must hold!
Types
LIKWID.AffinityDomains — TypeInformation about the affinity domains
LIKWID.AffinityDomain — TypeAn affinity domain