ForkUnion v3

v3.0.0 Breaking

This release includes 5 breaking changes for platform teams planning a safe upgrade.

Published 11d Developer Productivity

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Topics

arm atomics compare-and-swap concurrency memory-model mpi

+9 more

multithreading numa openmp parallel-computing parallel-stl parallelism rayon thread-pool threadpool

ReleasePort's take

Moderate signal

editorial:auto 11d

ReleasePort Layer 1 v3.0.0 introduces multiple breaking changes that affect core APIs and compatibility layers.

Why it matters: All listed breaking changes (severity 80) eliminate back‑compatibility shims, require explicit topology handles, and split headers; migration is mandatory before upgrade.

Summary

AI summary

Broad release touches Patch, Improve, Fix, and Make.

Changes in this release

Type	Severity	Summary	CVE
Breaking
Breaking	High	Breaks HMAT and kernel tiering by measuring memory fabric in-process Breaks HMAT and kernel tiering by measuring memory fabric in-process Source: llm_adapter@2026-07-16 Confidence: high	—
Breaking	High	Breaks DomainAllocator by introducing symmetric containers and SDK benchmark alignment Breaks DomainAllocator by introducing symmetric containers and SDK benchmark alignment Source: llm_adapter@2026-07-16 Confidence: high	—
Breaking	High	Breaks C ABI by requiring explicit `fu_topology_t` handle, removing singletons Breaks C ABI by requiring explicit `fu_topology_t` handle, removing singletons Source: llm_adapter@2026-07-16 Confidence: high	—
Breaking	High	Enforces a single vocabulary and canonical order across all surfaces Enforces a single vocabulary and canonical order across all surfaces Source: llm_adapter@2026-07-16 Confidence: high	—
Breaking	High	Removes all back‑compatibility shims Removes all back‑compatibility shims Source: llm_adapter@2026-07-16 Confidence: high	—
Breaking	High	Layers capability macros and splits the umbrella header file Layers capability macros and splits the umbrella header file Source: llm_adapter@2026-07-16 Confidence: high	—
Breaking	High	Makes `RoundRobinVec` bulk operations allocation‑free and sound Makes `RoundRobinVec` bulk operations allocation‑free and sound Source: llm_adapter@2026-07-16 Confidence: high	—
Breaking	High	Splits topology into separate compute and memory domains Splits topology into separate compute and memory domains Source: llm_adapter@2026-07-16 Confidence: high	—
Breaking	High	Introduces generation tokens for non‑blocking multi‑pool coordination Introduces generation tokens for non‑blocking multi‑pool coordination Source: llm_adapter@2026-07-16 Confidence: high	—
Feature
Feature	Medium	Adds binding of measured fabric to Rust and Zig languages Adds binding of measured fabric to Rust and Zig languages Source: llm_adapter@2026-07-16 Confidence: high	—
Feature	Low	Enumerates per‑domain cache sizes from sysfs and CPUID Enumerates per‑domain cache sizes from sysfs and CPUID Source: granite4.1:30b@2026-07-16-audit Confidence: low	—
Feature	Low	Adds FreeBSD support for reschedule, topology, memory placement, and superpages Adds FreeBSD support for reschedule, topology, memory placement, and superpages Source: granite4.1:30b@2026-07-16-audit Confidence: low	—
Feature	Low	Introduces label‑propagation benchmark replacing triangle counting Introduces label‑propagation benchmark replacing triangle counting Source: granite4.1:30b@2026-07-16-audit Confidence: low	—
Feature	Low	Adds cache‑line demote & promote hints for x86, Arm, and RISC‑V Adds cache‑line demote & promote hints for x86, Arm, and RISC‑V Source: granite4.1:30b@2026-07-16-audit Confidence: low	—
Feature	Low	Introduces monitored waits, per‑loop wait bounds, and Zawrs Introduces monitored waits, per‑loop wait bounds, and Zawrs Source: granite4.1:30b@2026-07-16-audit Confidence: low	—
Feature	Low	Adds owning arrays and rebuilds topology on them Adds owning arrays and rebuilds topology on them Source: granite4.1:30b@2026-07-16-audit Confidence: low	—
Feature	Low	Adds Windows support for topology, NUMA pools, and pinning Adds Windows support for topology, NUMA pools, and pinning Source: granite4.1:30b@2026-07-16-audit Confidence: low	—
Feature	Low	Adds Miri coverage of the pure‑Rust unsafe code Adds Miri coverage of the pure‑Rust unsafe code Source: granite4.1:30b@2026-07-16-audit Confidence: low	—
Feature	Low	Introduces Rust `scope()` API replacing the SafePtr smuggle Introduces Rust `scope()` API replacing the SafePtr smuggle Source: granite4.1:30b@2026-07-16-audit Confidence: low	—
Feature	Low	Adds memory tiers, cpuless domains, HMAT metrics, and macOS harvest Adds memory tiers, cpuless domains, HMAT metrics, and macOS harvest Source: granite4.1:30b@2026-07-16-audit Confidence: low	—
Feature	Low	Introduces stoppable & exception‑handling `try_for` utility Introduces stoppable & exception‑handling `try_for` utility Source: granite4.1:30b@2026-07-16-audit Confidence: low	—
Feature	Low	Adds reductions in Rust implementation Adds reductions in Rust implementation Source: granite4.1:30b@2026-07-16-audit Confidence: low	—
Feature	Low	Provides NUMA‑aware allocator for Zig language Provides NUMA‑aware allocator for Zig language Source: granite4.1:30b@2026-07-16-audit Confidence: low	—
Feature	Low	Benchmarks against libXEV and Spice libraries Benchmarks against libXEV and Spice libraries Source: granite4.1:30b@2026-07-16-audit Confidence: low	—
Feature	Low	Adds draft Zig binding to the SDK Adds draft Zig binding to the SDK Source: granite4.1:30b@2026-07-16-audit Confidence: low	—

Full changelog

Release: v3.0.0 [skip ci]

Major

Break: Measure the memory fabric in-process, replacing HMAT and kernel tiering (49290e7)
Break: DomainAllocator, symmetric containers, SDK benchmark alignment (06bf8fe)
Break: Explicit fu_topology_t handle across the C ABI, no singletons (6903711)
Break: One vocabulary, one canonical order, across every surface (fa78301)
Break: Remove every back-compatibility shim (818151a)
Break: Layer capability macros, split the umbrella header (ec013e8)
Break: Sound, allocation-free RoundRobinVec bulk operations (384bef5)
Break: Split topology into compute and memory domains (64d4bdf)
Break: Generation tokens for non-blocking multi-pool coordination (1545311)
Break: New project name & link (6da19ed)
Break: Name spacing/capitalization (0911619)

Minor

Add: Bind the measured fabric to Rust and Zig (35e439b)
Add: Enumerate per-domain cache sizes from sysfs and CPUID (c322c93)
Add: FreeBSD reschedule, topology, memory placement, and superpages (6a84509)
Add: Label-propagation benchmark replacing triangle counting (2604198)
Add: Cache-line demote & promote hints for x86, Arm, and RISC-V (4145073)
Add: Monitored waits, per-loop wait bounds, and Zawrs (d7774e5)
Add: Owning arrays, and rebuild the topology on them (586e138)
Add: Windows support for topology, NUMA pools, and pinning (2ae8150)
Add: Miri coverage of the pure-Rust unsafe (6c7f62d)
Add: Rust scope() API replacing the SafePtr smuggle (b71341f)
Add: Memory tiers, cpuless domains, HMAT metrics, and macOS harvest (c27faf8)
Add: Stoppable & Exception-handling try_for (cb6b257)
Add: Reductions in Rust (e7932c4)
Add: NUMA-aware allocator for Zig (bbb9e90)
Add: Bench against libXEV and Spice (bf998f9)
Add: Draft Zig binding (916e641)

Patch

Make: Version the duplicated macros in types.hpp (6fc9312)
Docs: Rewrite the topology guide around the declared-versus-observed split (a6e9843)
Improve: Hoist the SplitMix64 avalanche into the shared types (3465c2d)
Docs: Refresh the intro and complete the v3 API coverage (45e4753)
Fix: Sync build-system references to place-* feature names (4e87654)
Fix: Build the timed-wait monitors under -march=native (0891489)
Make: Green the CI matrix - apt sources, tar, shellcheck, cross rows (1be2492)
Docs: Refresh the README against the v3 APIs and slim the benchmarks (e3396ec)
Make: Rewrite the pre-commit hook single-pass and Windows-proof (a52dfef)
Fix: Probe FreeBSD's memory placement at runtime, not just compile time (c2eb3a7)
Make: Restructure the pre-release CI around matrices and ctest (e3d7ff2)
Improve: Flatten test bodies into helpers and split bundled concerns (feeaddd)
Improve: Normalize the N-body kernels across languages (02bb703)
Improve: Deepen test coverage across schedulers, lifecycles, and the C ABI (6b77064)
Improve: Time-budgeted benchmarks, symmetric across C++, Rust, and Zig (45eb844)
Make: Install git in the FreeBSD CI VM for Taskflow fetch (198b04f)
Make: Align benchmark builds and add Taskflow as a baseline (ef68bca)
Fix: Hoist dead work and stale docs out of the pool internals (11aa660)
Improve: Flatten the distributed pool's colocations into one array (50d39e2)
Improve: Dispatch curated yield-and-hints pool variants at runtime (134b7f6)
Improve: Private cursors, read-probes, and demotions in dynamic stealing (c525460)
Improve: Pools carry a cache-hints policy beside the yield (ea5399a)
Make: Bump Zig to 0.16 for macOS 26 (4ce5b40)
Make: Refresh retired CI runners, fix FreeBSD linkage (e351fd1)
Improve: Steer Apple efficiency-core pools via QoS (c7be3fb)
Fix: Route platform checks through the FU_* vocabulary (f30ce60)
Fix: Robust NUMA placement under sandboxed and single-node hosts (239e3b0)
Improve: Locate and value-print test failures, backtrace on crash (c427d6c)
Make: Static-link the qemu-run cross-compile test binaries (ef3d11c)
Fix: Cross-platform CI test failures (315da41)
Make: Build the old-glibc floor on manylinux_2_28 (5f26aba)
Improve: Model Android and FreeBSD affinity and scheduling (b903e50)
Improve: Flatten the libc and hwprobe capability detection (7a4fd4e)
Fix: Assemble the RISC-V pause hint on stock toolchains (1da97c7)
Improve: Reach the CPU yield intrinsics on MSVC (a960fa3)
Fix: Harden pool-completion tests against scheduler starvation (e85d35f)
Make: Expand CI to validate cross-platform compatibility (d171746)
Fix: Build clean under -Wall -Wextra -Werror (3833a67)
Fix: Assemble the WFET capability probe on stock toolchains (05ed868)
Improve: Full backend matrix via one compile-time-policy dispatch per demo (12bab43)
Improve: Unified capability enumeration, pool_kind_t, leaner ABI (90546ed)
Improve: Cleaner feature controls, one set across the SDKs (c2e9669)
Fix: Restore Windows NUMA allocation and page-size probe (6d29828)
Fix: Size and pin pools from the cores we were given (33497ab)
Make: Expose each capability as an AUTO/ON/OFF tri-state (0020411)
Fix: Seed where a stealing thread starts probing, not just its stride (c5f30cd)
Improve: Private claim cursors for for_n_dynamic (5ea9298)
Improve: NUMA backends for the Rust N-body, and dual-socket results (8350177)
Improve: Compute-domain metadata across the bindings (95df7bc)
Fix: NUMA topology harvesting on multi-socket hosts (3ebeea5)
Docs: Reword stale topology phrasing to compute/memory domains (0272b39)
Make: Rename allocator numa_node to memory_domain (d8e170f)
Docs: Reword prong metadata for two-axis topology (f12d0ef)
Make: Bump CI runners and add Arm64 + sanitizer coverage (d230ab1)
Fix: Rust examples for by-reference for_threads (39b007c)
Make: Bump CI (9a08a62)
Fix: Over-aligned AllocationResult (3bf34e9)
Improve: Validate CacheAligned padding (46bb382)
Improve: RoundRobinVec code nesting (9982ad9)
Fix: Deprecate spice comparison (a707d55)
Make: Backport to Zig 0.15 (0167211)
Improve: Shared call_yield_ with & w/out thread (541842c)
Improve: Select worker-yield overloads with if constexpr (53e1b5d)
Fix: Route standard_worker_yield through micro_yield() (101a955)
Improve: Add worker_yield_t hook for idle backoff (18b6d63)
Make: Apple's libSystem contains Blocks runtime (1e9540f)
Make: Skip C11 tests on MSVC - lacking atomics (a21ac35)
Improve: Test C stable API (e8c6b48)
Improve: Static slicing for std.Thread.Pool (ca3d42b)
Make: Upgrade Zig to v0.16 (6d6283a)
Improve: Handle void contexts (0b9ed05)
Fix: Use aligned allocs for opaque_pool_t (fb063a7)
Improve: Thread name formatting (d9455c8)
Docs: Why no Miri or Loom? (0ec9ae9)
Fix: Safeguard try for std::thread (ddf8ea0)

Breaking Changes

Measure the memory fabric in-process replaces HMAT and kernel tiering
DomainAllocator, symmetric containers, SDK benchmark alignment changed
Explicit `fu_topology_t` handle across C ABI; no singletons
Unified vocabulary with canonical order across all surfaces
Removed every back‑compatibility shim

View diff on GitHub

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