If `find_package()` succeeds to find GTest and `INSTALL_DEPENDENCIES`
is set to OFF, `GTEST_BOTH_LIBRARIES` is not set and thus
`rccl-UnitTests` fails with trying to link unkown symbols.
* Add support for extended fine-grained system memory pool
* Use hipHostRegisterUncached
* Add "sc0 sc1" flags for LL store on gfx950
* Update after HIP flag is changed to hipExtHostRegisterUncached
This feature tracks the proxy events and status of each send/recv op. ProxyTrace keeps a fixed number of active ops in host mem and dumps the status of each op when the program crashes or hangs.
When the `roc-obj-ls` executable fails, it sometimes does not return. Since the `execute_process` command will wait until the executable finishes, this means that in some cases, the build will hang indefinitely. There is no error message, and no indication that anything is wrong. This commit fixes that by introducing timeouts into the code and better error reporting.
* [Azure CI] rccl nightly pipeline that runs on slurm
- Login node will be set up as a self-hosted agent on Azure Pipelines.
- Login node will run this job nightly.
- Login node will checkout the latest develop source, and then run build and test through sbatch calls, and then waiting for the jobs to complete. When the jobs are complete, print out the logs.
Improvements for GB200 systems
* Optimize the network performance by alternating the direction of the
rings and the NIC to GPU assignment across communicators to limit
unnecessary sharing.
* Fix the detection of C2C links in case GPU Direct RDMA is disabled
between a GPU and a NIC.
* Fix PXN support on MNNVL systems, where NCCL would try (and fail) to
share regular host memory across multiple nodes.
* Fix P2C (PXN over C2C), which is now preferred over regular PXN. This
support is currently preliminary and is disabled by default; use
NCCL_PXN_C2C=1 to enable.
Further reduce the overheads of CUDA graph capturing, which increased in
NCCL 2.26.2 for large graphs.
Optimize the network performance on DGX B200 systems by adjusting the
bandwidths provided to the graph search algorithm.
Enable fp8 reductions in symmetric kernels on Blackwell with CUDA 12.8.
Restore the plugin name handling logic to make it possible to specify a
path to the plugin (Issue #1732).
Restore the ability to change NCCL_COLLNET_ENABLE during execution
(Issue #1741).
Add an example tuner plugin with CSV-based overrides.
Remove an x86 dependency from the example profiler.
* First version of new replayer, with comments on future TODOs
* plus minor fixes for UT
* Updated format of recorder, especially in binary department, according to replayer's need
* Reapply "[AG and RS channel tuning] Add thread work threshold to tuning models and precompute reg index in LL128 (#1641)"
This reverts commit 943ad6f7820739385a0b54e81f823d0df1dbf71c.
* Decreasing NCCL_LL128_SHMEM_ELEMS_PER_THREAD from 16 to 8
Nilesh M Negi
Mustafa Abduljabbar
Atul Kulkarni
mberenjk
Bertan Dogancay
Marius Brehler
Rakesh Roy
Wenkai Du
ryanhankins
isaki001
Arm Patinyasakdikul
gilbertlee-amd
Dingming Wu
corey-derochie-amd
jonatluu
Grant Pinkert
BertanDogancay
Joseph Macaranas
Kamil Iskra
Sarat Kamisetty
Tim
Richard Barnes
Nusrat Islam
Atul Kulkarni
vstojilj
Pedram Alizadeh