v1.8.0-rc1

1.8.0-rc1

Features:

UCX Core

• Improved detection for DEVX support
• Improved TCP scalability
• Added support for ROCM to perftest
• Added support for different source and target memory types to perftest
• Added optimized memcpy for ROCM devices
• Added hardware tag-matching for CUDA buffers
• Added support for CUDA and ROCM managed memories
• Added support for client/server disconnect protocol over rdma connection manager
• Added support for striding receive queue for hardware tag-matching
• Added XPMEM-based rendezvous protocol for shared memory
• Added support shared memory communication between containers on same machine
• Added support for multi-threaded RDMA memory registration for large regions

UCX Java (API Preview)

• Added APIs for stream send/recv, tag probe, and connect request handle
• Added Java package (automatically published) to Maven central

Bugfixes:

• Multiple fixes in JUCX
• Fixes in UCP thread safety
• Fixes for most recent versions GCC, PGI, and ICC
• Fixes for CPU affinity on Azure instances
• Fixes in XPMEM support on PPC64
• Performance fixes in CUDA IPC
• Fixes in RDMA CM flows
• Multiple fixes in TCP transport
• Multiple fixes in documentation