* Fix build on additional architectures
Instead of directly wrapping a platform-specific operation with a
preprocessor check against a gfx macro, it can be more flexible to
check a macro that can be overriden by the user. The gfx macro can then
just provide the default value for the macro, resulting in the same
default behaviour as if the gfx macro was checked directly but with
more control at build-time.
For example, to build rccl without using buffer_wbinvl1_vol on
gfx902, but still use the default on other archs, a user could
export CXXFLAGS='-Xarch_gfx902 -DRCCL_USE_WBINVL1_VOL=1' before
configuring the build. This flexibility isn't always necessary, but
it's nicer to have it and not need it than to need it and not have it.
* Define WARP_SIZE using warpSize builtin
Add support for IB SHARP to NVLS (NVLink SHARP algorithm).
Add NVLS+Tree algorithm.
Add support for memory management using cuMem* functions.
Use all NICs for Send/Receive operations on systems with more than
one NIC per GPU (#804).
Add ncclCommSplit primitive, with resource sharing option in config.
Fix alltoallv hang (#788)
Increase number of channels on H100 when we're not limited by NVLink.
Improve error reporting in case of IB failure, printing local and
remote ID (#779).
Add build option to allow compilation against RDMA includes instead
of dynamically loading IB verbs symbols (#802).
Fix context creation for progress thread (#803).
NET/IB: add option to use multiple QPs in round-robin mode.
Fix tree performance issue when NVB is disabled on HCM topologies.
Add new NVLS algorithm for allreduce using NVLink SHARP (intra-node only).
Add new config options: cgaClusterSize, minCTAs, maxCTAs, netName.
Enable LL128 when we use PXN to close rings.
NVTX3 includes update.
Fix crash when one CollNet (SHARP) rail fails to initialize.
* Add MSCCL support
* Add alignment and message size checking
* Fix nRanks checking, in-place and out-of-place tests and group call handling
* Fix hipGraph unit test
* Change MSCCL init warning to INFO
* Revise license info
Add support for CUDA 12.0, drop Kepler (sm_35).
Support for H100 features.
Make socket code more robust and protected. Solves #555.
Improve performance on large CUDA graphs, reducing dependencies.
Reduce inter-socket bandwidth on AMD CPUs to favor better paths.
Various fixes to ncclCommAbort.
Make service thread polling resistant to EINTR.
Compile with profiling API by default.
Extend NVTX instrumentation with call arguments.
Fix crash with CollnetChain on some node topologies
Fix hang when interleaving the capture of different graphs
Fix hang during init in multi-threaded mode
Fix potential data corruption with LL128 protocol on unaligned buffers.
Fix CPU usage during preconnect
Fixes double-free in the error path for ncclCommInitAll
Workaround hang on H100 with Ring/LL128 on 2 GPUs.
* Fix compilation warning with -Wmisleading-indentation
When compile with -Wmisleading-indentation, it reports warning:
misleading indentation; statement is not part of the previous 'if'
This patch fixes it
* Avoid relative include file path
We don't need relative include file paths for src/graph/*.h
since src/ is already in CMake include_directories
Add support for improved fault tolerance: non-blocking mode, new
init function with config, and ncclCommFinalize function.
Reintroduce collnet+chain algorithm, alongside collnet+direct.
Add LL protocol for intra-node P2P (on by default) and network
communication (off by default).
Use network instead of shared memory when performance is better.
Fix: wait for CUDA graph destroy before destroying comm with linked
graph resources.
Remove aggressive polling during enqueue.
Fix DMABUF fallback on MOFED 5.4 and earlier.
akolliasAMD
Cory Bloor
Wenkai Du
Nusrat Islam
Ziyue Yang
Wenkai Du
Sylvain Jeaugey
Wen-Heng (Jack) Chung
Wen-Heng (Jack) Chung
Jane Xu
Edgar Gabriel
Edgar Gabriel
Min Si