CHANGELOG

# Changelog 5.1.1
- Support for Intel Cometlake desktop (Core + Uncore)
- Fix for topology module of Fujitsu A64FX
- Fix for Intel Skylake SP in SNC mode
- Fix for likwid-perfscope
- Fix for CLI argument parsing
- Updated group and data file checkers
- Vector sum benchmark in SVE
- FP_PIPE group for Fujitsu A64FX
- Maximal number of CLI arguments configurable in config.mk (currently 16384)

# Changelog 5.1.0
- Support for Intel Icelake desktop (Core + Uncore)
- Support for Intel Icelake server (Core only)
- Support for Intel Tigerlake desktop (Core only)
- Support for Nvidia GPUs with compute capability >= 7.0 (CUpti Profiling API)
- Support for Fujitsu A64FX (Core) including SVE assembly benchmarks
- Support for ARM Neoverse N1 (AWS Graviton 2)
- Support for AMD Zen3 (Core + Uncore but without any events)
- Check for Intel HWP
- Fix for TID filter of Skylake SP LLC filter0 register
- Fix for Lua 5.1
- Fix for likwid-mpirun skip masks
- Fortran90 interface for NvMarkerAPI
- CPU_is_online check to filter non-usable CPU cores

# Changelog 5.0.2
- Fix memory leak in calc_metric()
- New peakflops benchmarks in likwid-bench
- Fix for NUMA domain handling properly
- Improvements for perf_event backend
- Fix for perfctr and powermeter with perf_event backend
- Fix for likwid-mpirun for SLURM with cpusets
- Fix for likwid-setFrequencies in cpusets
- Update for POWER9 event list
- Updates for AMD Zen, Zen+ and Zen2 (events, groups)
- Fix for Intel Uncore events with same name for different devices
- Fix for file descriptor handling
- Fix for compilation with GCC10
- Remove sleep timer warning
- Update examples C-markerAPI and C-internalMarkerAPI

# Changelog 5.0.1
- Some fixes for likwid-mpirun
  - Fix for hybrid pinning with multiple hosts
  - Fix for perf.groups without core-local events (switch to likwid-pin)
  - Fix for command line parser
  - For for mpiopts parameter
  - Add UPMC as Uncore counter to splitUncoreEvents()
  - Expand user-given input to abspath if possible
  - Check for at least one executable in user-given command
  - Add skip mask for SLURM + Intel OpenMP
  - Check if user-given MPI type is available
- Fix for perf_event backend when used as root
- Inlude likwid-marker.h in likwid.h to not break old MarkerAPI code
- Enable build with ARM HPC compiler (ARMCLANG compiler setting)
- Fix creation of likwid-bench benchmarks on POWER platforms
- Fix for build system in NVIDIA_INTERFACE=BUILD_APPDAEMON=true
- Update for executable tester
- Update for MPI+X test (X: OpenMP or Pthreads)

# Changelog 5.0.0
- 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


# Changelog 4.3.4
- 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

# Changelog 4.3.3
- 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

# Changelog 4.3.2
- 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

# Changelog 4.3.1
- Fix for setting/getting turbo mode in frequency module
- Exchanged two events in perf. groups of Intel Skylake X

# Changelog 4.3.0
- Support for Intel Skylake SP architecture (core, uncore, energy)
- Support for AMD Zen architecture (core, l2, energy)
- Pinning strategy 'balanced'

# Changelog 4.2.1
- 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
- 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
- Intel SandyBridge: Fix for L3CACHE group
- Event/Counter list contains only usable counters and events

# Changelog 4.2.0
- 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
- Fix for non-HyperThreading counters (PMC4-7) on Intel Broadwell
- Socket measurements can be used for all cores on the socket in
  metric formulas.
- likwid-perfctr: Timeline mode without executable runs until user presses Ctrl+c
- likwid-perfctr: New CYCLE_ACTIVITY groups
- likwid-perfctr: New PORT_USAGE groups (only with deactivated HyperThreading)
- likwid-perfctr: Regions are sorted in output as they are executed by the code
- likwid-powermeter: Read Uncore frequency settings and performance energy bias
- likwid-powermeter: Update of energy unit for DRAM domain for Intel
                     Broadwell D/EP and Intel Xeon Phi (Knights Landing)
- likwid-bench: Fix for 'cycles per update' metric
- likwid-bench: Vector lengths are sanitized for thread count and loop stride
- likwid-topology: Increase robustness
- likwid-mpirun: Some fixes

# Changelog 4.1.2
- 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

# Changelog 4.1.1
- Fix for Uncore handling for EP/EN/EX systems
- Minor fix for Uncore handling for Intel desktop systems
- Fix in generic readCounters function
- Support for Intel Goldmont (untested)
- Fixes for likwid-mpirun

# Changelog 4.1.0
- Support for Intel Skylake (Core + Uncore)
- Support for Intel Broadwell (Core + Uncore)
- Support for Intel Broadwell D (Core + Uncore)
- Support for Intel Broadwell EP/EN/EX (Core + Uncore)
- Support for Intel Airmont (Core)
- Uncore support for Intel SandyBridge, IvyBridge and Haswell
- Performance group and event set handling in library
- Internal calculator for derived metrics
- Improvement of Marker API
- Get results/metrics of last measurement cycle
- Fixed most memory leaks
- Respect 'Intel PMU sharing guide'
- Update of internal Lua to 5.3
- More examples (C++11 threads,Cilk+, TBB)
- Test suite for executables and library
- Accuracy checker supports multiple CPUs
- Security checked access daemon
- Likwid-bench supports Integer benchmarks
- Likwid-bench selects interation count automatically
- Likwid-bench has new FMA related benchmarks
- Likwid-mpirun supports SLURM job scheduler
- New tool likwid-features

# Changelog 4.0.1
- likwid-bench: Iteration determination is done serially
- likwid-bench: Manual selection of iterations possible
- likwid-perfctr: Set cpuset to all CPUs not only the first
- likwid-pin: Set cpuset to all CPUs not only the first
- likwid-accuracy.py: Enhanced plotting functions, use only instrumented likwid-bench
- likwid-accessD: Check for allowed register for PCI accesses
- Add models HASWELL_M1 (0x45) and HASWELL_M2 (0x46) to likwid-powermeter and likwid-accessD
- New test application using Cilk and Marker API
- New test application using C++11 threads and Marker API
- likwid-agent: gmetric version check for --group option and s/\s*/_/ in metric names
- likwid-powermeter: Print RAPL domain name
- Marker API: Initialize access already at likwid_markerInit()
- Marker API: likwid_markerThreadInit() only pins if not already pinned

# Changelog 4.0.0

- Support for Intel Broadwell
- Uncore support for all Uncore-aware architectures
    - Nehalem (EX)
    - Westmere (EX)
    - SandyBridge EP
    - IvyBridge EP
    - Haswell EP
- Measure multiple event sets in a round-robin fashion (no multiplexing!)
- Event options to filter the counter increments
- Whole LIKWID functionality is exposed as API for C/C++ and Lua
- New functions in the Marker API to switch event sets and get intermediate results
- Topology code relies on hwloc. CPUID is still included but only as fallback
- Most LIKWID applications are written in Lua (only exception likwid-bench)
- Monitoring daemon likwid-agent with multiple output backends
- More performance groups