# 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

