[Engine] isa_guard_check fails on Linux builds: tq_rows_avx512 (tq_avx512.cpp) is not in WIDE_PUBLIC / WIDE_OBJECTS #3409

Area

[Engine] (speed, kernels, models, the server and API)

Desktop app, Terminal or source?

Source (START-HERE.bat, setup.sh or a build)

What happened

Expected: isa_guard_check passes when every wide-ISA function is reached only behind a CPU check. Actual: it fails on one such function.
On a CUDA build of 0.2.0-beta with -DSTRATA_BUILD_TESTS=ON -DSTRATA_ISA_FLOOR=avx, ctest isa_guard_check fails:

check_isa_guard: .../libstrata_kernels_cpu.a: 481 functions, 70 hold wide-ISA instructions, 1 not allowed
  VIOLATION strata::kernels::cpu::tq_detail::tq_rows_avx512(int, unsigned char const*, unsigned long, int, strata::kernels::cpu::tq_detail::TqAct const* const*, int, float* (606 wide instructions, first vmovq): wide-ISA code in an unlisted public function

#3358 shows the same violation on a HIP build ("outside the wide-ISA translation units (object tq_avx512.cpp.o)"), mentioned there as a side note.

As far as I can see this is a gap in the list, not an unguarded call. tq_rows_avx512 is reached only through tq_rows(tq_isa(), ...) (tq_cpu.cpp:174). tq_isa() picks TqIsa::avx512 only when tq_isa_ok(TqIsa::avx512) → cpu_avx512_ok(), and tq_rows aborts on an ISA the CPU lacks (tq_cpu.cpp:185). This host has no AVX2. No illegal instruction was seen in the engine or in any other test. All the AVX1/AVX2 parity tests pass: router_dot_parity_avx, iq_avx1_parity, iq_avx2_parity, q8k_quant_parity_avx.

Suggested change (tested here) in tools/check_isa_guard.py:

• add "tq_rows_avx512" to WIDE_PUBLIC
• add "tq_avx512.cpp" to WIDE_OBJECTS (so it is also in INIT_FREE_OBJECTS)
• add "tq_avx2.cpp" to the extra INIT_FREE_OBJECTS. It is compiled above the AVX baseline like nvfp4_avx2.cpp, so a static initialiser there would run on every CPU (Strata v0.1.44 Fails to run Quadro P6000, Linux 6.8.0-146-generic; GPU 580.178.04; CUDA: 13.0 #2324).

With these three changes the check reports 0 not allowed on the same library. tq_avx2.cpp currently has no static initialiser, so adding it changes nothing today; it guards against a future one.

Related, also seen here (already listed in #3358): tq_cpu_parity, tq_cpu_parity_avx2 and native_hadamard_test print this ggml has no trellis types (build with STRATA_GGML_DIR = the agention ... fork) and exit as failed. With the default upstream llama.cpp they would read better as skipped (SKIP_RETURN_CODE 77).

Smallest steps or command that reproduce it

cmake -S . -B build-tests -DSTRATA_ENABLE_CUDA=ON -DSTRATA_ISA_FLOOR=avx -DSTRATA_BUILD_TESTS=ON -DCMAKE_CUDA_ARCHITECTURES=86
cmake --build build-tests && cd build-tests && ctest -R isa_guard_check --output-on-failure

Reproduction status

Reproduced locally

Strata version

Strata 0.2.0-beta · engine 0.1.45.3 (source, commit 3d1fb480). main on 2026-10-20 has no tq_rows_avx512 / tq_avx512.cpp in tools/check_isa_guard.py.

Graphics card, memory and system

RTX 3060 12 GB (driver 610.57.04, CUDA 13.3 from the pip wheels, g++ 14.4.1), 2 × Xeon E5-2630 v2 (AVX, no AVX2/FMA), 252 GB DDR3, Fedora 44, binutils objdump.