[platelett]

GPU builds (--gpu acc or --gpu mp) with NVHPC 26.9 fail at their first link:

/usr/bin/ld: cannot find -lnvhpcwrapnvtx: No such file or directory
gmake[3]: *** [CMakeFiles/syscheck.dir/build.make:100: syscheck] Error 2

• Cause. NVHPC 26.9 renamed its NVTX wrapper library to libnvhpcnvtx, and MFCTargets.cmake names the old one.
• Fix. This PR stops naming it. The -cudalib=nvtx3 flag already on that line links the wrapper under each release's own name.
• CI. The CI lanes (NVHPC up to 26.3) link the same library as before.
• CI filter. A one-line change makes CI run the build matrix for cmake/ changes; it is the same line as Fix compiler configuration, build-cache identity, and CMake CI coverage #2019.

Change

cmake/MFCTargets.cmake. For CUDA ≥ 12.9 (no CUDA::nvToolsExt), the targets linked the wrapper twice:

target_link_libraries(${a_target} PRIVATE nvhpcwrapnvtx)
target_link_options(${a_target} PRIVATE "-cudalib=nvtx3")

The first line is removed. The driver adds the wrapper itself:

nvfortran	-cudalib=nvtx3 -dryrun link line
25.9, 26.3	... -lnvhpcwrapnvtx ...
26.9	... -lnvhpcnvtx ...

A comment records this next to the flag. The CUDA ≤ 12.8 branch (CUDA::nvToolsExt) is unchanged.

.github/file-filter.yml. It adds 'cmake/**' to the cmakelist filter. The filter lists CMakeLists.txt and toolchain/cmake/**, but not the cmake/ directory added in #1552. As a result, a PR that changes only cmake/*.cmake, like this one, skips the build and test matrix. This is the same line as #2019, so whichever lands second merges cleanly. I can drop this line if you prefer.

Side effects

• NVHPC ≤ 26.3: the link line is unchanged in effect. It was checked with -dryrun on 25.9 and 26.3, and a clean 26.3 --gpu acc build shows libnvhpcwrapnvtx.so in ldd, as before.
• CUDA ≤ 12.8: unchanged.
• CI: it now runs the build matrix for cmake/ changes, which costs more CI time for such PRs.

Verification

On 2× H100 NVL:

	master	this PR
NVHPC 26.9, --gpu acc	link fails (above)	all targets build
NVHPC 25.9, --gpu acc	builds	builds
NVTX ranges in nsys (./mfc.sh run ... --nsys, 2D_riemann_test, 50 steps)	—	present on 25.9 and 26.9: TIMESTEP ×50, COMPUTE-RHS ×150, RHS-RIEMANN-SOLVER ×300, RHS-RECONSTRUCTION ×300
Full --gpu acc suite, NVHPC 26.9	cannot build	675 passed, 47 failed. All 47 are hypoelasticity tests (below)

On an RTX 4060 Ti (sm_89):

	master	this PR
NVHPC 26.9, --gpu acc	ld: cannot find -lnvhpcwrapnvtx	pre/sim/post build
NVHPC 26.3 (newest CI lane), --gpu acc, clean build directory	builds	syscheck and pre_process build, and ldd shows libnvhpcwrapnvtx.so
nsys NVTX summary, 64² 2D case, 20 steps, NVHPC 26.9	—	TIMESTEP ×20, COMPUTE-RHS ×60, RHS-RIEMANN-SOLVER ×120, RHS-RECONSTRUCTION ×120

The 47 hypoelasticity failures on 26.9 are unrelated to this PR:

• Unpatched master, built on 26.9 with a compat symlink so it links, fails the same way. For example, 34F3999B gives abs: 1.56E-02, rel: 1.56E-05 in both.
• A CPU-only 26.9 build, which has no NVTX at all, fails 41 of the first 51 hypoelasticity tests.
• --reldebug and --debug builds pass, with no bounds errors.
• They pass on NVHPC 25.9. We will report them separately.

./mfc.sh precheck passes.

Contribution Policy

All contributions are expected to demonstrate:

• A clear understanding of the codebase
• Alignment with product direction
• Thoughtful reasoning behind changes
• Evidence of real-world usage or hands-on experience with the problem

If these expectations are not met, we would prefer to implement the changes ourselves rather than spend time reviewing low-effort submissions.

Acknowledgement

• I confirm this PR meets the above expectations and reflects my own understanding and real-world context.

---

This PR is from Diablo (Tsinghua University) participating in the SC26 Student Cluster Competition.

[github-actions]

Claude Code Review

Head SHA: 4870e05

Files changed:

• 2
• .github/file-filter.yml
• cmake/MFCTargets.cmake

Findings:
No issues found. Checked cmake/MFCTargets.cmake (NVTX link branch for CUDA >= 12.9 now relies on -cudalib=nvtx3 alone) and .github/file-filter.yml (cmake/** added to the cmakelist filter).

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 61.95%. Comparing base (ee99151) to head (4870e05).

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #2111   +/-   ##
=======================================
  Coverage   61.95%   61.95%           
=======================================
  Files          86       86           
  Lines       22906    22906           
  Branches     3378     3378           
=======================================
  Hits        14192    14192           
  Misses       6206     6206           
  Partials     2508     2508           

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