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The release notes for the ROCm platform.
Changes in This Release#
Ubuntu 18.04 End of Life Announcement#
Support for Ubuntu 18.04 ends in this release. Future releases of ROCm will not provide prebuilt packages for Ubuntu 18.04. HIP and Other Runtimes
A bug was discovered in the HIP graph capture implementation in the ROCm v5.2.0 release. If the same kernel is called twice (with different argument values) in a graph capture, the implementation only kept the argument values for the second kernel call.
A bug was introduced in the hiprtc implementation in the ROCm v5.2.0 release. This bug caused the
hiprtcGetLoweredNamecall to fail for named expressions with whitespace in it.
The named expression
my_sqrt<complex<double>> passed but
my_sqrt<complex<double >> failed.
Compatibility with NCCL 2.12.10
Packages for test and benchmark executables on all supported OSes using CPack
Added custom signal handler - opt-in with RCCL_ENABLE_SIGNALHANDLER=1
Additional details provided if Binary File Descriptor library (BFD) is pre-installed.
Added experimental support for using multiple ranks per device
Requires using a new interface to create communicator (ncclCommInitRankMulti), refer to the interface documentation for details.
To avoid potential deadlocks, user might have to set an environment variables increasing the number of hardware queues. For example,
Added support for reusing ports in NET/IB channels
Opt-in with NCCL_IB_SOCK_CLIENT_PORT_REUSE=1 and NCCL_IB_SOCK_SERVER_PORT_REUSE=1
When “Call to bind failed: Address already in use” error happens in large-scale AlltoAll(for example, >=64 MI200 nodes), users are suggested to opt-in either one or both of the options to resolve the massive port usage issue
Avoid using NCCL_IB_SOCK_SERVER_PORT_REUSE when NCCL_NCHANNELS_PER_NET_PEER is tuned >1
Removed experimental clique-based kernels
No notable changes in this release for development tools, including the compiler, profiler, and debugger Deployment and Management Tools
No notable changes in this release for deployment and management tools. Older ROCm Releases
For release information for older ROCm releases, refer to RadeonOpenCompute/ROCm