2025-09-25 Linaro Data Center Group steering committee Meeting Agenda/Minutes

When? 4th Thursday of each month.

Zoom connection details

• Meeting ID: 938 5333 7073

• Computer: https://linaro-org.zoom.us/j/93853337073

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• Previous meeting minutes: 2025-08-28 Linaro Data Center Group steering committee Meeting Agenda/Minutes

• Project Updates

• Events

• AOB

• INSERT

• Project Updates

  • Deploy CCA on Arm Platforms (DCAP)

    • Updates since last meeting:

      • Kata Containers

        • Fixed an issue with Istio: IPv6 test was failing on Arm64 CI.

      • Standards

        • CoSERV (endorsement API proposal) has been accepted as a RATS working group at IETF.

    • Next tasks:

      • Device Assignment

        • Continue the work to support additional features as they become available from Arm in TrustedFirmware and Linux.

      • Kata Containers

        • Produce proper documentation and scripts to run Kata containers with RME support.

        • Set up Kata Arm64 runtime-rs testing job.

        • Add k0s support on RME-enabled host on Kata-deploy in Kata Containers CI.

      • Veraison

        • Add capability to process an extended CCA attestation token.

      • Standards

        • Continue the work on the Attested TLS and CoSERV working groups.

        • Continue the work on CCA token standardization.

        • Continue the work on the CCA token extension for device assignment.

  • Performance Optimization (PO)

    • Updates since last meeting:

      • OpenSSL

        • Poly1305: Vector Lenght Agnostic (VLA) implementation patch submitted and awaiting review.

        • SM4: investigated why fallback to Neon or Neon/AESE implementation was not happening if SM4 CE is not implemented (Graviton4). This has been enabled before by Huawei, but only enabled for a few architectures (Neoverse N1/V1 and some Snapdragon). This has now been fixed and performance tested in a downstream branch. While ECB and CTR block cipher modes are indeed faster with the Neon/Neon+AESE implementation than they are with the fallback C implementation, CBC mode, however, is significantly slower.

    • Next tasks:

      • SM4: investigate why SM4-CBC with Neon/Neon+AESE is slower than the C implementation.

      • OpenSSL Camellia: continue working on assembly implementation; use any help available from FutureWei intern.

  • Big Data & Data Science (BDDS)

    • Updates since last meeting:

      • Bigtop 3.5 has been released.

      • Enabled Gluten Arm64 CI.

      • Apache Doris: performance optimization patches accepted.

    • Next tasks:

      • Doris:

        • Continue work to porto AVX2 intrinsics to SVE.

        • Support Arm64 CI.

      • Gluten: continue maintenance work.

      • Bigtop Manager: work on 1.1.0 release.

  • Enhanced Software-Defined-Storage on Arm Servers (STOR)

    • Updates since last meeting:

      • Finished investigation and analysis of the performance gaps between x86 and Arm of various use cases on JuiceFS.

    • Next tasks:

      • JuiceFS: continue working on performance optimization.

      • Lustre: Arm64 CI maintenance.

      • Key-Value Cache: performance investigation.

• Events

  • KVM Forum: 4-5 September, Milan, Italy

    • Mathieu Poirier and Thomas Fossati from Linaro attended. Very good discussions around confidential computing and, specifically, device assignment and attestation verification.

  • oneAPI Developer Summit: 17 September, virtual

    • Presentations from Fujitsu:

      • Keynote: Accelerating Scientific ML with FUJITSU-MONAKA: Towards Energy-Efficient AI for Next-Gen Simulation Workflows - Priyanka Sharma, Fujitsu

      • Accelerating DL on ARM through oneDNN - Shreyas Shankar, Fujitsu

  • Open Source Firmware Conference (OSFC): 7-10 October, Sunnyvale, CA, USA

    • Leonardo will be attending.

  • OCP Global Summit: 14-16 October, 2025, San Jose, CA, USA

    • Clashes with LPM. Leonardo will be attending.

  • Linaro Partners Meeting (LPM): 14-16 October, 2025, London, UK

  • IETF 124: 1-7 November, Montreal, Canada

    • Linaro and Arm will attend remotely.

  • KubeCon North America: 10-13 November, 2025, Atlanta, GA, USA

    • Kevin, from Linaro, will attend.

  • Linux Plumbers: 11-13 December 2025, Tokyo, Japan

    • Linaro will be attending and participating in the Confidential Computing microconference.

  • openEuler SIG Gathering

  • openEuler Summit

  • China Lustre User Summit

  • Community Over Code Europe

  • Community Over Code North America

• AOB