Sandia OpenSHMEM v1.5.3rc1

The Sandia OpenSHMEM development team is pleased to announce SOS v1.5.3, release candidate 1. Below are some of the changes included in this release:

• Added several enhancements to better support SOS as a backend for Intel® SHMEM.
• Added extension support for GPU RDMA and external heap creation.
• Added support for multi-NIC configurations via libfabric. The feature is enabled by default. It can be disabled with the environment variable, SHMEM_OFI_DISABLE_MULTIRAIL=1.
• Added initial support for multi-NIC topology optimizations via hwloc. Detection of hwloc is enabled by default. It can be disabled with the configuration flag, --without-hwloc.
• Moved the "tests-sos" package of unit tests and performance benchmarks to a new Git submodule hosted at https://github.com/openshmem-org/tests-sos.
• Added shmemx_ibput and shmemx_ibget as extension APIs.
• Added shmemx_signal_add and shmemx_signal_set as extension APIs.
• Added several configuration flags to optimize for the CXI libfabric provider: --enable-ofi-inject and --enable-nonfetch-amo, which are enabled by default.
• Manpage generation is now disabled by default to shorten build times. It can be re-enabled during configuration with the --enable-manpages flag.
• Included multiple bugfixes, including in teams configuration, remote-virtual-addressing checks, buffer argument overlap checks, and more.