Optimization for Tree allreduce on A100.
Improve aggregation performance.
Use shared buffers for inter-node send/recv.
Add NVTX profiling hooks.
Accelerate alltoall connections by merging communication for all
channels.
Add support for one hop communication through NVLink, for faster
send/recv communication on cubemesh topologies like DGX-1.
Improve alltoall scheduling to better balance intra/inter node
communication.
Increase send/recv parallelism by 8x, each warp sending or
receiving to a different peer.
Net: move to v4.
Net: make flush operation asynchronous to accelerate alltoall.
Net: define maximum number of requests.
Fix hang when using LL128 protocol after 2^31 steps.
Fix#379 : topology injection failing when using less GPUs than
described in the XML.
Fix#394 : protocol mismatch causing hangs or crashes when using
one GPU per node.
[ROCm/rccl commit: 920dbe5b35]
* Add alltoallv API and implementation
* Extend Rome P2P channel limit to multinode and alltoall kernels
* topo_expl: fix compilation and sync up with main
* gtest: use RCCL alltoallv API
* Code review changes
[ROCm/rccl commit: b871ea3c0c]
* Add another Rome model
* Add gfx908 4P3L models and support
* Revert "Use cached value for detecting GDR support only once"
This reverts commit 0108a1219d.
* Skip using ibverb for GPU direct RDMA detection
* Fine tune one Rome model
[ROCm/rccl commit: a51e4071e3]
If a PCI node is the parent of a NIC, treat it as such, regardless of
the PCI class code for the device. This allows non-traditional devices
to act as NICs via the net plugin mechanism.
For consistency, treat GPUs similarly.
[ROCm/rccl commit: 700c0e0f24]
* Use posix_memalign for network buffer allocation on host memory
* ib-test: add ability to specify run iterations
* ib-test: define iterations as multiple of default cycles
* Add checking to posix_memalign return value
[ROCm/rccl commit: 0eb19a563a]
Add support for A100 GPU and related platforms.
Add support for CUDA 11.
Add support for send/receive operations (beta).
[ROCm/rccl commit: 5949d96f36]
The reduction tree (tree up) was inverting the NICs to use,
causing performance issue in cases where we are using different
NICs on a given channel.
[ROCm/rccl commit: b5b6c6acdd]
Add support for network collectives.
Add support for XML topology dump/injection.
Add text values for GDR and P2P Levels, including "NVL".
Add speed detection for PCI, Infiniband and Ethernet cards.
Add CPU detection for ARM and AMD CPUs.
Add support for adaptive routing on Infiniband.
Change NET plugin API to v3 : merge PCI path and GPU pointer
capability into a single structure and add other properties.
[ROCm/rccl commit: b221128eca]
Wenkai Du
Sylvain Jeaugey
Wenkai Du
gilbertlee-amd
Jack Snyder
Eric Badger
Aaron Enye Shi