Likwid Versions Save

New version LIKWID 5.0.0

Changelog:

• Support for ARM architectures. Special support for Marvell Thunder X2
• Support for IBM POWER architectures. Support for POWER8 and POWER9.
• Support for AMD Zen2 microarchitecture.
• Support for data fabric counters of AMD Zen microarchitecture
• Support for Nvidia GPU monitoring (with NvMarkerAPI)
• New clock frequency backend (with less overhead)
• Generation of benchmarks for likwid-bench on-the-fly from ptt files
• Switch back to C-based metric calculator (less overhead)
• Interface function to performance groups, create your own.
• Integration of GOTCHA for hooking into client application at runtime
• Thread-local initialization of streams for likwid-bench
• Enhanced support for SLURM with likwid-mpirun
• New MPI and Hybrid pinning features for likwid-mpirun
• Interface to enable the membind kernel memory policy
• JSON output filter file (use -o output.json)
• Update of internal HWLOC to 2.1.0

Note: The MarkerAPI Macros have been moved to a separate header "likwid-marker.h"

New bugfix release:

• Fix for detecting PCI devices if system can split up LLC and memory channels (Intel CoD or SNC)
• Don't pin accessDaemon to threads to avoid long access latencies due to busy hardware thread
• Fix for calculations in likwid-bench if streams are used for input and output
• Fix for LIKWID_MARKER_REGISTER with perf_event backend
• Support for Intel Atom (Tremont) (nothing new, same as Intel Atom (Goldmont Plus))
• Workaround for topology detection if LLC and memory channels are split up. Kernel does not detect it properly sometimes. (Intel CoD or SNC)
• Minor updates for build system
• Minor updates for documentation

Notice: If you want to compile likwid-4.3.4 with ACCESSMODE=perf_event, please apply the attached patch before compiling.

• Fixes for likwid-mpirun
• Fixes for events of Intel Skylake SP and Intel Broadwell
• Support for Intel CascadeLake X (only new eventlist, uses code from Intel Skylake SP)
• Fix for bitmask creation in Lua
• Event options for perf_event backend
• New assembly benchmarks in likwid-bench
• MarkerAPI: Function to reset regions
• Some new performance groups (DIVIDE and TMA)
• Fixes for AMD Zen performance groups
• Fix when using topology input file
• Minor bugfixes

• Fix in internal metric calculator
• Support for Intel Knights Mill (core, rapl, uncore)
• Intel Skylake X: Some fixes for events and perf. groups
• Set KMP_INIT_AT_FORK to bypass bug in Intel OpenMP memory allocator
• AMD Zen: Use RETIRED_INSTRUCTION instead of fixed-purpose counter for metric calculation
• All FLOPS_* groups now have vectorization ratio
• Fix for MarkerAPI with perf_event backend
• Fix for maximal/minimal uncore frequency
• Skip counters that are already in use, don't exit
• likwid-mpirun: minor fix when overloading a host
• Improved detection of PCI devices

Minor fixes for Intel Skylake and frequency module

• Support for Intel Skylake SP architecture (core, uncore, energy)
• Support for AMD Zen architecture (core, l2, energy)
• Support for Intel Goldmont Plus architecture
• Pinning strategy 'balanced'
• New Lua based calculator
• Support for Intel PState CPU frequency daemon

Minor:

• Fixed MCDRAM measurements on Intel Xeon Phi (KNL) with perf_event back end

Merry Christmas

• Fix for logical selection strings
• likwid-agent: general update
• likwid-mpirun: Improved SLURM support
• likwid-mpirun: Print metrics sorted as they are listen in perf. group
• likwid-perfctr: Print metrics/events as header in timeline mode Redirect to file when -o switch is used
• likwid-setFrequency: Commandline options to set min, max and current frequency
• Pinning-Library: Automatically detect and skip shepard threads
• Intel Broadwell: Added support for E3 (like Desktop), Fix for L3 group
• Intel IvyBridge: Fix for PCU fixed-purpose counters
• Intel Skylake: Fix for events CYCLE_ACTIVITY, new event L2_LINES_OUT
• Intel Xeon Phi (KNL): Fix for overflow register, Update for ENERGY group OFFCORE_RESPONSE events are now tile-specific
• Intel SandyBridge: Fix for L3CACHE group
• Event/Counter list contains only usable counters and events
• Fix and warning message for static library builds

• Support for Intel Xeon Phi (Knights Landing): Core, Uncore, RAPL
• Support for Uncore counters of some desktop chips (SandyBridge, IvyBridge, Haswell, Broadwell and Skylake)
• Basic support for Linux perf_event interface instead of native access. Currently only core-local counters working, Uncore is experimental
• Support to build against a existing Lua installation (5.1 - 5.3 tested)
• Support for CPU frequency manipulation, Lua interface updated
• Access module checks for LLNL's msr_safe kernel module
• Support for counter registers that are only available when HyperThreading is off
• Socket measurements can be used for all cores on the socket in metric formulas.

The LIKWID team wishes Merry Christmas to everyone.

• Fix for likwid-powermeter: Use proper energy unit
• Fix for performance groups for Intel Broadwell (D/EP): DATA and FALSE_SHARE
• Reduce number of started access daemons
• Clean Uncore unit local control registers (needed for simultaneous use of LIKWID 3 and 4)
• Clean config, filter and counter registers at *_finalize function
• Fix for likwid-features and likwid-perfctr

• Fix for Uncore handling for EP/EN/EX systems
• Minor fix for Uncore handling on Intel desktop systems
• Fix in generic readCounters function
• Support for Intel Goldmont (untested)
• Fixes for likwid-mpirun