Slurm SPANK plugin

This release includes the Slurm SPANK plugin that allows Slurm to use mpibind.

Python interface/bindings

This release provides a Python interface for mpibind including unit tests and example programs.

Support mpibind+flux spack variant

Major features of this release include the following:

• Added a lua script to load the mpibind plugin for Flux. The location of this script can be added to the FLUX_SHELL_RC_PATH environment variable that loads external plugins into Flux.
• Added utility functions to better support modules that use mpibind such as the Flux plugin or Python bindings.

Since the mpibind plugin depends on a Flux header, Flux is a dependency of the mpibind+flux variant. In other words, when installing mpibind+flux in Spack, mpibind will install the Flux plugin along with flux-core.

Increased mapping granularity to hardware threads

• When multiple workers are assigned to the same core, mpibind now maps the workers to individual threads when possible.
• Test suite improvements:
  • Updated the test-suite expected mappings.
  • Improved documentation to debug the test-suite.
  • Updated the build process so that tests are not built when libtap is not present.
  • Provided a fix for macOS systems.
• mpibind is now in spack.
• Added programs to test GPU properties and their IDs.
• The build version of mpibind is now based on the github version.
• Delegated the installation of the Flux plugin into Flux to the user.
• Fixed Flux dependency when building the flux plugin.

Improved support for I/O devices

• Added functions to the API to select type of I/O ID.
• Added support for various I/O device IDs including: PCI bus, UUID,
  VISIBLE_DEVICES, and name. This is particularly useful for handling
  GPUs in a more precise manner through UUIDs or PCI IDs, which are
  unique.
• Added Infrastructure to support other devices besides GPUs such as
  NICs.
• Deprecated mpibind_get_gpu_type
• Implemented the verbose option of the Flux plugin.
• Added Makefile for affinity programs; it was ignored when programs were
  added.

Affinity programs

Added programs to show CPU and GPU affinity at run time.
They include MPI, OpenMP, and MPI+OpenMP variants.

Flux plugin

Added the Flux plugin: Jobs under Flux can use mpibind for mapping and affinity.

Autotools + test suite

• Added support for pkgconfig: mpibind.pc
• Added test suite using libtap
• Fixed issue with SMT-1 topologies.
• Added suport for GNU Autotools.

First release of mpibind

This release provides the C-bindings of mpibind.

• mpibind provides the mapping of each worker to the underlying hardware.
• The caller is responsible for binding the worker to the assigned resources.
• mpibind depends on the hwloc library version 2+
• mpibind provides helper functions to set the appropriate environment variables for AMD/NVIDIA GPUs and OpenMP threads.