Version 2.3.1

The most important changes/improvements of v2.3.1 are the following:

• Improvements on validate.sh for better error reporting.
• Enhancements on README.md.
• Improved logo.

Version 2.3.0

The most important changes/improvements of v2.3.0 are the following:

• Introducing validate.sh, a smoke/validation script that verifies many of the provided data structures.
• A few improvements on some benchmarks in order to be conformed with validate.sh.
• Introducing the logo of the repository.
• Enhancements on README.md.

Version 2.2.1

The most important changes/improvements of v2.2.1 are the following:

• Executing Pause instructions on spinning-loops for the X86 architecture. Spin-locks and some lock-free algorithms may have performance benefits in SMT architectures.
• Documentation improvements.

Version 2.2.0

This is the v2.2.0 release. This is the most stable and high-performant version of our source, so far.
The most important changes/improvements of v2.2.0 are the following:

• A new implementation of the pool.c functionality. Most stack and queue implementations support memory reclamation, the only exception are the simstack, simqueue, lfstack and msqueue implementations.
• Code clean-up for the Sim family of algorithms.
• Improvements on the H-Synch family of algorithms.
• Enhanced NUMA support for the NUMA-aware data-structures.
• Homogenized code for stack and queue implementations.
• Better output for bench.sh script.
• Numerous performance optimizations and bug-fixes, especially in machines with weak memory models.
• Documentation improvements.

Version 2.1.1

The most important changes/improvements of v2.1.1 are the following:

• Improving the output messages of build-system.
• Adding support for clang in Makefile (i.e.,use make clang for building the sources with the clang compile).
• A few bug-fixes and minor improvements.
• Dropped support for Intel icc compiler and added support for Intel icx compiler. Tested with Intel(R) oneAPI DPC++ Compiler 2021.1.2.

Version 2.1.0

The most important changes/improvements of v2.1.0 are the following:

• Significant enhancements on bench.sh.
• New folder/file library structure.
• ftime is replaced by clock_gettime.

Version 2.0.1

This is mostly a stability release. The most important changes/improvements are the following:

• Removing dead-code from the unsupported sparc/solaris architecture.
• PAPI and NUMA libraries automatically used depending user's settings in config.h.
• Pid fix for the Sync family of algorithms.
• Code-cleanup.

Version 2.0

This is the v2.0 version of the code. This version introduces numerous bug fixes and features. In short, some of the features/enhancements of this release are the following:

• Initial support for ARM-V8 and RISC-V machine architectures.
• Significant performance optimizations for the Synch family of algorithms on modern NUMA machines.
• The produced binaries can run with any number of threads/fibers without re-compilation.
• All the produced benchmark binaries can accept arguments, such as the number of threads, the number of benchmark's iterations, etc.
• Enhancements on how the runtime handles the NUMA characteristics of modern multiprocessors.
• Better thread affinity policy in NUMA machines.
• A new script called run_all.sh is provided for automatically testing all the produced binaries.
• A .clang-format file is provided in order to maintain the styling-consistency of the source code.
• Numerous performance optimizations and bug-fixes.

Towards v2.0

This version introduces a series of bug fixes and performance improvements.
More testing has been performed in RISC-V and aarch64 machine architectures.

Initial support for ARM-V8 and RISC-V architectures

This release is successfully tested in X86_64, ARM-V8 and RISC-V machine architecture.
However, it is optimized in terms of performance only for the X86_64 architecture.