v1.5.0-rc1

New Features and Enhancements

Core

• Added support for ucc_mem_map and ucc_mem_unmap {PR #1070}
• Enhanced error logs in context creation {PR #1135}
• Enhanced error log in collective init {PR #1104}
• Added ucc net devices config {PR #1141}

CL/HIER

• Added flag for nonroot info {PR #1123}
• Removed per node leader, fix double free {PR #1126}

TL/UCP

• Fixed allreduce knomial data consistency {PR #1145}
• Fixed ag oneshot {PR #1134}
• Added Allgather linear implementation {PR #1122}
• Fall back if memh not passed {PR #1136}

TL/MLX5

• Added HCA-assisted copy & CUDA scratch design {PR #1154}
• Added logging for mcast FORCE/TRY modes {PR #1156}
• Fixed segfault in multicast team creation {PR #1150}
• Recover from ipoib issue in mcast init {PR #1140}
• Added configuration to set IB QP SL {PR #1057}
• Added ctx global status check {PR #1113}
• Added cuda support for zcopy mcast {PR #1118}

TL/CUDA

• Added NVLink SHARP (NVLS) Allreduce {PR #1148}
• Added Topology Cache {PR #1137}
• Added NVLink SHARP (NVLS) Reduce Scatter {PR #1144}

EC/ROCM

• Include stdbool.h for new versions of ROCM {PR #1146}

TOPO

• Node ldr ordered by team {PR #1129}

Build and Test

• Fixed coverity issues {PR #1152}
• Updated cuda arch {PR #1143}
• Changed to CUDA 12.9 {PR #1155}
• Added buffers for onesided tests {PR #1100}
• Added perftest generator {PR #1147}
• Added missing progress calls in UCC_PERFTEST {PR #1151}
• Updated versions in CI {PR #1115}
• Bumped version to v1.5 {PR #1121}

Documentation

• Updated component image 1.4.4 {PR #1153}

Tools

• Added perftest generator {PR #1147}
• Added missing progress calls in UCC_PERFTEST {PR #1151}