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NEWS: Added NEWS for v1.20.1-rc1 - v1.20.x - #11270

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roiedanino:v1.20.1-rc1-NEWS
Mar 19, 2026
Merged

yosefe merged 3 commits into
openucx:v1.20.xfrom
roiedanino:v1.20.1-rc1-NEWS

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@roiedanino

@roiedanino roiedanino commented Mar 18, 2026 •

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What?

Updated NEWS file with recent changes

Why?

Part of the release process of v1.20.1

Added changes:

Features / Enhancements

# Proposed NEWS line Component Commit PR
1 Added 'auto' option for UCX_IB_MLX5_DEVX_OBJECTS which disables DevX when ODP is available (for Grace) UCT/IB e93933b cherry-pick of 2004c74
2 Prioritize routes with longer subnet masks for improved reachability check accuracy UCT f656dbd #11051
3 Cache RoCE network interface index per sys_dev to avoid repeated lookups UCT/IB 8a2986e #11231

Bugfixes

# Proposed NEWS line Component Commit PR
1 Fixed CUDA context handling for system device during rkey unpack UCT/CUDA 8b77fb8 #11240
2 Fixed HSA memory type check for newer ROCm releases (hip managed memory) UCT/ROCM e4932d0 #11244 / #11236
3 Fixed DevX objects flag handling UCT/IB 93f547a #11175 / backport #11192
4 Fixed rcache locking for GDR copy UCS 960691e #11149 / backport #11190
5 Fixed device memory allocation alignment in MLX5 DevX UCT/IB a7a9437 #11178 / backport #11188
6 Fixed IB memory handle flags enum order UCT/IB 1775883 backport #11148
7 Disabled indirect atomic registration for Direct NIC UCT/IB 7d784a4 #11111 / backport #11148
8 Fixed stale destination endpoint ID and stale acks from before connection reset in UD transport UCT/IB 476facd #11128 / original #11092
9 Increased TLS info buffer size in transport selection to prevent potential truncation UCP 9f1b529 #11131
10 Fixed incorrect warning about valid environment variable names UCP 7a08d2d backport #11058
11 Fixed ucp_config_modify not reporting an error when no matching modifiable configuration exists UCP bbd7e17 #11047

Documentation

# Proposed NEWS line Component Commit PR
1 Clarified that user buffer can be modified after calling ucp_atomic_op_nbx (data is packed immediately) UCP/API 4a7f271 #11126 / backport #11189

Packaging / CI

# Proposed NEWS line Component Commit PR
1 Fixed Debian package dependency cleanup Build 1517269 #11267
2 Obsoleted KNEM sub-package Packaging d9a4f35 #11164
3 Fixed full workspace cleanup to resolve checkout failures CI 0165b63 #11135

Testing

# Proposed NEWS line Component Commit PR
1 Fixed stale_dest_ep_id_update test for UD transport Testing 1619616 #11193

Signed-off-by: Roie Danino <rdanino@nvidia.com>
@roiedanino
roiedanino requested review from tvegas1 and yosefe March 18, 2026 14:12
@roiedanino roiedanino self-assigned this Mar 18, 2026
Comment thread NEWS Resolved
Comment thread NEWS Resolved
Signed-off-by: Roie Danino <rdanino@nvidia.com>
Comment thread NEWS
* Fix RoCE reachable route check when node_guuid is not unique among HCAs
#### CUDA
* Fixed CUDA context handling for system device during rkey unpack
* Fixed HSA memory type check for newer ROCm releases

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should this entry be in a separate ####ROCM section instead of under CUDA?

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Absolutely, will fix this

Signed-off-by: Roie Danino <rdanino@nvidia.com>
@yosefe
yosefe merged commit eedfcc0 into openucx:v1.20.x Mar 19, 2026
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4 participants