Research window: Past 24 hours (2026-09-21 04:30 ~ 2026-09-22 04:30, Beijing time). Sources: Three GitHub organization checks (RuyiAI-Stack 16 repos, ruyisdk 46 repos, openRuyi-Project 36 repos — commits, releases, and merge requests; verified via both API and Atom channels, with upstream fork commits filtered one by one against RISC-V keywords and irrelevant upstream commits excluded), RuyiSDK developer community (latest forum topics and the RuyiAI section), the openRuyi distro news page, the board support matrix, arXiv search, and Google News RSS multi-query searches in Chinese and English (via proxy; no hits in this window, see appendix).

Index

  • Today’s Highlight: SpacemiT X100/A100 core support merged into the RuyiSDK GCC 16.2 branch (09-21)
  • I. RuyiAI Stack Progress (PyTorch / Triton / TileLang RISC-V porting)
    • 1.1 PyTorch riscv default branch force-pushed again within the window; baselines for 8 open PRs refreshed uniformly (09-21)
    • 1.2 triton-riscv publishes weekly build Nightly 2026-09-20-12c2f6a (09-21)
    • 1.3 tilelang-riscv, llvm-project, and other dedicated target repos silent within the window (07-16 / 09-17 status)
    • 1.4 Tech intelligence repo pushes the 09-21 issue; site contributor data auto-updated (09-21)
  • II. RuyiSDK Toolchain and Distro (GCC, kernel, support matrix, openRuyi)
    • 2.1 riscv-gcc 16.2 branch merges SpacemiT X100/A100 core support (09-21)
    • 2.2 P extension lowering continues to land: packed min/max and psh1add enter the p-rebase branch (09-21)
    • 2.3 Support matrix backfills five reports in bulk: CoM260 Kit triple-system and Milk-V Duo S dual-system (09-21)
    • 2.4 board-docs adds examples and a ROS2 course entry for CoM260 Kit (09-22)
    • 2.5 openRuyi sees 56 commits within the window: dual-track kernel upgrades, build system refactor, and a batch of security updates (09-21 to 09-22)
    • 2.6 ruyi and packages-index silent within the window, no commits or releases (09-18 / 09-16 status)
  • III. Vector Extensions and Operator Optimization (VecIntrinBench / IntrinTrans / FBGEMM)
    • 3.1 All three dedicated target repos silent within the window (09-21 status)
  • IV. Community and Events (biweekly progress, forum, docs)
    • 4.1 Community publishes the 09-21 open-source tech news roundup (09-21)
    • 4.2 Community reposts two RISC-V industry updates (09-21)
    • 4.3 Biweekly Progress issue 077 not yet published; no new announcements on the openRuyi news page (since 09-15)
  • V. Trend Observations
    • 5.1 The toolchain starts recognizing cores: X100/A100 enter -mcpu/-mtune, forming two lines of support alongside RVV benchmark numbers
    • 5.2 openRuyi’s rolling updates enter the dual-track kernel and build normalization phase
    • 5.3 The K3/CoM260 platform completes a content loop of validation, examples, and courses within a week
    • 5.4 Gaps and points of interest in this window

Today’s Highlight: SpacemiT X100/A100 Core Support Merged into the RuyiSDK GCC 16.2 Branch

Date: 2026-09-21　Source: spacemit-x100 commit, Spacemit-A100 commit

At 15:04 and 15:10 Beijing time on 09-21, the 16.2 branch of riscv-gcc — RuyiSDK’s multi-version GCC maintenance repo — merged two SpacemiT core support patches in succession: RISC-V: Add basic spacemit-x100 core support and RISC-V: Add basic Spacemit-A100 core support, formally adding the two cores to the compiler’s -mcpu/-mtune options.

The X100 patch maps scheduling to the existing generic_ooo model; the changes cover the core and tuning entries in riscv-cores.def, the newly added spacemit_x100_tune_info in riscv.cc, regeneration of the mcpu/mtune documentation, and a new test case mcpu-spacemit-x100.c. The A100 patch’s description is more detailed: the core is in-order dual-issue with a microarchitecture close to X60, so it temporarily reuses the Spacemit X60 cost model; in terms of ISA it is closest to X100, with the main differences being that it does not implement the H (hypervisor) extension, has a vector length VLEN=1024 (zvl1024b), and carries the xsmtvdotii extension — that extension definition is also written into riscv-ext-spacemit.def and the extension documentation, with tests and core entries filled in accordingly.

Both patches were authored by Mark Zhuang of SpacemiT (patch sign-off dates in late June) and were merged by the repo maintainers on 09-21. For development boards using the K3 platform (such as the CoM260 Kit’s combination of 8 X100 and 8 A100 cores), this means the RuyiSDK toolchain can directly select these two cores via -mcpu and obtain the corresponding extension definitions and scheduling settings, rather than relying only on generic configurations. Given that both are basic support (X100 uses the generic out-of-order model, A100 reuses the X60 cost model), the subsequent scheduling refinements and test coverage are worth continuing to track in this daily report.

1. RuyiAI Stack Progress (PyTorch / Triton / TileLang RISC-V Adaptation)

Window Overview: Of the 16 repositories in the RuyiAI-Stack organization, 4 saw activity during the window: pytorch (forced push on the default branch and 89 syncs with the upstream main), triton-riscv (1 release), ruyiai-daily (1 commit), and ruyiai-stack.github.io (1 automated commit); tilelang-riscv, llvm-project, pytorch-ci, FBGEMM, cpuinfo, VecIntrinBench, IntrinTrans, harness, dsh-osc, torq-tile, skills, and SyncBots-DeepAgents saw no pushes during the window.

1.1 PyTorch’s riscv default branch is force-pushed again during the window, with baselines for 8 open PRs refreshed uniformly (09-21)

Date: 2026-09-21　Source: riscv branch commits, PR #51, PR #46

At 08:24 Beijing time on 09-21, the fork’s default branch riscv underwent a force push (the timeline records the operator as WuXintong123): GitHub concurrently recorded base branch force-push events (base_ref_force_pushed) on 8 open merge requests and uniformly refreshed the update timestamps of these 8 PRs to the same moment—#23, #35, #36, #38, #43, #46, #48, #51. The branch head is currently 4f173e3e (Fix bytes_to_scalar for float/complex on RISC-V, corresponding to the content of PR #44); the committer timestamps of the commits at the branch head cluster around 03:00 on 09-21, indicating that the branch content underwent a rearrangement late the previous night. The repository’s riscv branch is continuously rearranged by an automated sync process (the branch history contains SyncBots integration commits), and this action is consistent with the push cadence of the previous day; no new content commits landed on the riscv branch during the window.

None of the 8 open merge requests whose status was refreshed were merged during the window, comprising: two in the RVV direction—#46 RISC-V Vector Extension (RVV) support for ATen (author Zhang Fei of the Institute of Software, 22 commits, 32 files, +2361/-32 lines) and #48 Add RISC-V Vector (RVV) CPU capability (author XYenChi, 21 commits, 18 files); CI and testing—#36 timeout relaxation, #38 temporary disabling of dataloader tests; features and placeholders—#23 Enable XNNPACK, #35 a test PR, #43 an optimization patch pending resubmission; and #51 Add riscv64 local image (local image build script), newly opened on 09-20.

The mainline main (upstream mirror branch) saw 89 sync commits during the window, with the latest push landing at 02:56 Beijing time on 09-22, covering routine upstream topics: precompile modularization, MPS race fixes, ROCm device entries, and distributed test stability; filtering item by item against keywords such as riscv, rvv, vector, XuanTie, rv64, and rv32 yielded no RISC-V-related content, so it is not covered in this issue.

1.2 triton-riscv releases weekly build Nightly 2026-09-20-12c2f6a (09-21)

Date: 2026-09-21　Source: Nightly 2026-09-20-12c2f6a

In the early hours of 09-21 Beijing time, triton-riscv released the weekly build Nightly 2026-09-20-12c2f6a (the previous issue was 2026-09-13-da5291b, preceded by 09-06 and 08-30, following a fixed weekly cadence). This build is taken from the repository’s current branch head 12c2f6a, whose content is the routine dependency update of 09-14 (the buddy-mlir nightly points to v0.0.9.dev20260911); the repository’s commits themselves remain at 09-14, with no new code entering during the window, making this a routine output of the build pipeline.

1.3 tilelang-riscv, llvm-project, and the remaining project-specific target repositories are silent during the window (07-16 / 09-17 status)

Date: 2026-09-21　Source: tilelang-riscv, llvm-project

The compiler and operator adaptation lines on the RISC-V side saw no new activity this issue: tilelang-riscv’s last commit is at 07-16, the llvm-project fork is at 09-17; pytorch-ci has no commit records, and harness (09-10), torq-tile (04-09), and dsh-osc (09-15) are likewise silent. All three repositories saw no commits or releases during the window.

1.4 Technical intelligence repository pushes the 09-21 issue, site contributor data updates automatically (09-21)

Date: 2026-09-21　Source: ruyiai-daily 2026-09-21 issue, site commit fa9af817

The technical intelligence repository saw one commit during the window (06:17 Beijing time on 09-21), covering the 09-21 issue, whose self-described rolling window runs from 02:24 on 09-20 to 06:00 on 09-21. The RISC-V section of that issue includes entries on AME toolchain artifacts (AME_llvm adds LLVM 21 toolchain shards and checksum files for ztt v0.6), Ztt test integration for AME_gem5, out-of-bounds tile register read detection for NEMU, and the merge of the FltRegion floating-point backend for XiangShan along with an experimental extension switch for architectural tests; the original timestamps all fall before this window, so per the no-duplication principle they are not covered again in this issue. The site repository saw another automated commit during the window (04:16 Beijing time on 09-22), routinely updating the contributor data file.

II. RuyiSDK Toolchain and Distributions (GCC, Kernel, Support Matrix, openRuyi)

Window Overview: Of the 46 repositories in the ruyisdk organization, 4 had pushes during the window: riscv-gcc (two branches, 16.2 and p-rebase), support-matrix (5 commits), board-docs (1), and ruyi-backend (routine Dependabot branch updates); the latest activity for ruyi, packages-index, docs, linux-xuantie-kernel, ruyisdk-vscode-extension, ruyisdk-website, ruyisdk-overlay, and others all dates to 09-20 or earlier. In the openRuyi-Project organization, openRuyi saw 56 commits during the window, with pushes to 4 other repositories as well (see 2.5).

2.1 riscv-gcc 16.2 Branch Merges SpacemiT X100/A100 Core Support (09-21)

Date: 2026-09-21　Source: 16.2 branch commit log

See “Today’s Highlights.” In addition: the 16.2 branch received 4 commits during the window, the other two being routine items — a backport of the upstream libstdc++ gamma_distribution fix (PR123409) and a daily build number commit; the repository organizes multiple GCC versions by branch (the default branch is 16.1), and the 16.2 branch continues to receive core and extension patches targeting new platforms.

2.2 P Extension Lowering Continues to Land: packed min/max and psh1add Enter the p-rebase Branch (09-21)

Date: 2026-09-21　Source: PR #19

At 14:43 Beijing time on 09-21, the p-rebase branch of the riscv-gcc repository merged pull request #19 (RISC-V: Lower packed min/max and psh1add via header operators, author TelGome): connecting packed min/max and psh1add instructions to lowering via header operators. This continues the series that began in late August (previously #15 through #18 progressively merged packed intrinsics for add/subtract, shift-compare, scalar add, and splat), as operator-based lowering for the P extension on the GCC side continues to fill out.

2.3 Support Matrix Batch-Adds Five Reports: CoM260 Kit with Three Systems and Milk-V Duo S with Two (09-21)

Date: 2026-09-21　Source: OpenHarmony report, openEuler report, Bianbu report, Ubuntu report, Arch Linux report

Between 21:44 and 23:05 Beijing time on 09-21, the board support matrix added five test reports in succession. After the 09-20 Buildroot report, CoM260 Kit (SpacemiT K3 platform) gained three new system reports — Bianbu, openEuler, and OpenHarmony — with the OpenHarmony report including bilingual documentation and four on-site photos (the TITANTOOLS flashing selection screen, pinout diagram, and desktop runtime). This completes the board’s coverage expansion from a single Buildroot to four system families. On the Milk-V Duo S side, two new reports were added for Arch Linux and Ubuntu, continuing to fill out that board’s system matrix. The five reports were submitted as little as two minutes apart, constituting a concentrated batch addition.

2.4 board-docs Adds Examples and a ROS2 Course Entry for CoM260 Kit (09-22)

Date: 2026-09-22　Source: board-docs PR #47

At 00:42 Beijing time on 09-22, the board examples repository merged PR #47 (8 file changes): adding a CoM260 Kit documentation directory with bilingual descriptions of the HelloWorld and Coremark examples, plus a course metadata entry under courses/ros2. This follows the repository’s 09-18 addition of a ROS2 course entry for the K3 Pico-ITX, and together with the three system reports in the support matrix during the same period, the K3 platform’s “verification report — example code — course” content chain is taking shape in parallel.

2.5 openRuyi Sees 56 Commits in the Window: Dual-Track Kernel Upgrades, Build System Refactor, and a Batch of Security Updates (09-21 to 09-22)

Date: 2026-09-22　Source: openRuyi commit log

The openRuyi package directory saw 56 commits during the window, the most single-day commits of the three organizations, concentrated along four lines.

First, dual-track kernel upgrades: linux was bumped to 7.2.6 and linux-lts to 6.18.52, with patch sets and kernel configs refreshed in sync (signed by a maintainer from the Institute of Software, Chinese Academy of Sciences, completed at 01:46 Beijing time on 09-22). The companion openRuyi-Project/linux worktree pushed four branches the same day: ruyi/7.2.y, ruyi/7.1.y, ruyi/7.0.y, and ruyi/6.18.y.

Second, build system refactor: a new openruyi-linux-build package was added to provide a unified linux dependency for all flavored kernel variants; the linux, linux-lts, and linux-lts-kmhv2 spec files were fully converted to RPM macro organization (5 commits in total).

Third, a batch of security updates: pcre2 10.48, imagemagick 7.1.2.31, python-ujson 6.0.0, python-datasets 5.0.1, python-pytorch-lightning 2.6.6, and btrbk 0.32.7 were all tagged security-fixes; glibc was updated to a new build baseline.

Fourth, cloud-native and desktop tooling additions: new Go packages including go-k8s-kms, konnectivity-client, datadog dd-trace-go, victoriametrics-metrics, and opencensus, plus cloudpods-dashboard; on the desktop side, fd and pngquant were added, along with a batch of their Rust dependency closures (vte, vt100, lscolors, jiff, clap-complete, etcetera, and more than a dozen other crates).

2.6 ruyi and packages-index Quiet in the Window, No Commits or Releases (09-18 / 09-16 Status)

Date: 2026-09-21　Source: ruyi Releases, packages-index

Since the 09-18 release of 0.54.0-alpha.20260918, the ruyi main branch and version branches saw no new commits or Releases during the window; the current installable stable version remains 0.52.0. The package index packages-index last saw a commit on 09-16, with no updates during the window. The latest activity for the ruyisdk website, overlay, board documentation, and other repositories also dates to 09-18 or earlier.

III. Vector Extensions and Operator Optimization (VecIntrinBench / IntrinTrans / FBGEMM)

3.1 All Three Dedicated Target Repositories Quiet in the Window (09-21 Status)

Date: 2026-09-21　Source: VecIntrinBench, IntrinTrans, FBGEMM

All three repositories — covering vector intrinsic benchmarks, intrinsic translation, and low-precision operator libraries — saw no commits during the window: VecIntrinBench last committed on 02-13, IntrinTrans on 06-25, and the FBGEMM fork on 07-13; the same group’s observation targets cpuinfo (05-20) and torq-tile (04-09) were likewise quiet. The most recent reproducible result in this direction remains the ONNX Runtime MLAS RVV kernel optimization recorded on 09-17 (3.01x speedup on ResNet50 on K3/X100), with no new benchmark data this period; for corresponding progress on the toolchain side, see the GCC core support in “Today’s Highlights.”

IV. Community and Events (Biweekly Progress, Forum, Documentation)

4.1 Community Publishes 09-21 Open-Source Tech News Roundup (09-21)

Date: 2026-09-21　Source: Community post 2845

At 11:30 Beijing time on 09-21, the RuyiAI section added its daily tech news roundup post (09-21 edition). The summary focuses on compiler topics including the MLIR Vector dialect transfer_read/transfer_write index symbol semantics RFC, the LLVM command-line library replacement RFC, a new Triton lowering pass, and PyTorch device index guards; the RISC-V section covers industry and architecture developments; see the topic link for the full original text.

4.2 Community Reposts Two RISC-V Industry Developments (09-21)

Date: 2026-09-21　Source: Repost 2846, Repost 2847

At 11:37 Beijing time on 09-21, the community added two more reposts: one on Chinese RISC-V cloud AI compute chip company EVAS Intelligence completing nearly RMB 2 billion in new funding at a post-money valuation approaching RMB 15 billion (source report dated 09-18); the other a tech news repost on NVIDIA GPUs internally integrating dozens of RISC-V cores. Neither post drew replies.

4.3 Biweekly Progress Issue 077 Not Published, No New Announcements on the openRuyi News Page (Since 09-15)

Date: 2026-09-21　Source: Biweekly Progress Issue 076, openRuyi news page

The latest RuyiSDK biweekly progress report remains Issue 076 (09-15, covering the ruyi 0.52 and VS Code extension 0.1.6 releases); Issue 077 was not published during the window. The latest article on the openRuyi news page remains the 2026.08 release announcement, with no preview yet for the 2026.09 monthly release.

V. Trend Observations

5.1 Toolchains Begin to Recognize Cores: X100/A100 Enter -mcpu/-mtune, Forming Two Lines of Support Alongside RVV Measured Numbers

The most concrete technical progress in this window is the riscv-gcc 16.2 branch adding -mcpu/-mtune and extension definitions (including VLEN=1024 and xsmtvdotii) for SpacemiT’s two cores. Combined with the 09-17 ONNX Runtime MLAS RVV kernel optimization (3.01x measured speedup on K3/X100), two lines of support for the K3 platform are advancing simultaneously: on the performance side, reproducible operator-level numbers; on the toolchain side, core-level recognition and scheduling entry points. The next thing worth tracking is scheduling model refinement—X100 currently uses a generic out-of-order model, and A100 reuses the X60 cost model, both of which are transitional approaches—as well as the maintenance path for these core supports going forward.

5.2 openRuyi’s Rolling Updates Enter the Dual-Kernel-Line and Build Standardization Phase

Among the 56 commits in a single day, the dual-line upgrades of kernel 7.2.6 and LTS 6.18.52, the new openruyi-linux-build package, and the RPM macro refactoring are the heaviest items this round; the rest are security updates and cloud-native and desktop package completions. Given that the news page still has no September release announcement, the content of the monthly release is still accumulating rapidly; the next observation point is the 2026.09 monthly release announcement and its accompanying kernel and security baseline.

5.3 The K3/CoM260 Platform Completes a Content Loop of Validation, Examples, and Courses Within One Week

From the 09-18 K3 Pico-ITX ROS2 course entry point, to the 09-20 CoM260 Buildroot report, the 09-21 CoM260 Kit three-system batch report and board-docs example completions, and then to the concurrent GCC-side core recognition support, the K3 platform completed continuous coverage of “multi-system validation—example code—course materials—toolchain” within one week. For developers and product teams targeting K3, the readiness of toolchains, system images, and learning materials has clearly improved.

5.4 Gaps and Points of Attention in This Window

Gaps that must be faithfully recorded: on the news side, multiple Chinese and English Google News queries for RuyiAI, RuyiSDK, Ruyi Community, and openRuyi returned zero hits consecutively; no new arXiv entries within the window; ruyi and packages-index silent (no commits or releases); all three dedicated target repositories for vectors and operators silent; the PyTorch fork shows only automated sync actions, with no new feature commits. Points of attention: first, follow-up developments on the ruyi 0.54 pre-release line and the version tagging of the 0.53 official release; second, biweekly progress issue #077 (previous issue 09-15); third, the openRuyi 2026.09 monthly release; fourth, the subsequent merge cadence of the riscv-gcc 16.2 branch.

Source Verification Table

Source Verification Result
RuyiAI-Stack organization (16 repos) 4 repos active: pytorch (forced push on default branch, 8 PR baseline refreshes, 89 main syncs), triton-riscv (1 release), ruyiai-daily (1), site repo (1); the other 12 repos silent
ruyisdk organization (46 repos) 4 repos with pushes: riscv-gcc (2 branches), support-matrix (5), board-docs (1), ruyi-backend (routine Dependabot); ruyi and packages-index have no commits or releases
openRuyi-Project organization (36 repos) openRuyi 56 commits, no new Release; linux (4 ruyi/* branches), fwts, kvm-unit-tests, and kernel-team-tools also have pushes
RuyiSDK Community Forum 3 new topics (09-21 news and two reposts); biweekly progress issue #077 not published
openRuyi news page No new version announcement (latest remains 2026.08)
Board support matrix 5 commits: CoM260 Kit three-system reports and Milk-V Duo S two-system reports (09-21)
arXiv (RISC-V vectors and AI compilers) No new entries within the window (most recent is the 09-17 survey)
Google News RSS (multiple Chinese and English queries) Zero hits for RuyiSDK / RuyiAI / Ruyi Community, etc.; control queries in the same batch returned normally, ruling out a scraping failure

Complete Source List