CUDA.jl v5 compatibility and precompilation fixes

[nicolamos]

PR: CUDA.jl v5 compatibility and precompilation fixes

Branch: fix-cuda-wrapper-calls → pc2/GPUInspector.jl main
Upstream: https://github.com/pc2/GPUInspector.jl

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Summary

Fixes breakages when loading GPUInspector with CUDA.jl v5: renamed NVML probe wrappers, deprecated device memory API, duplicate method definitions that block precompilation, and broken savefig_monitoring_results dispatch in the CairoMakie extension.

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Problem

After updating to CUDA.jl v5, GPUInspector fails at precompile or runtime:

• UndefVarError on NVML.unsafe_nvml* (renamed upstream in CUDA.jl)
• Deprecation/error on CUDA.total_memory() in gpus()
• Method overwrite errors: clear_gpu_memory / clear_all_gpus_memory defined in both stubs and CUDAExt/utility.jl
• savefig_monitoring_results: infinite recursion on multi-symbol calls; stub/extension signature clash

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Key Changes

1. NVML capability probes (ext/CUDAExt/cuda_wrappers.jl)

Use NVML.unchecked_nvmlDeviceGetTemperature, unchecked_nvmlDeviceGetPowerUsage, unchecked_nvmlDeviceGetUtilizationRates instead of removed unsafe_nvml* names.

2. Device memory query (ext/CUDAExt/implementations/gpuinfo.jl)

Replace deprecated CUDA.total_memory() with CUDA.totalmem(dev) in gpus().

3. Precompilation — memory cleanup (ext/CUDAExt/utility.jl)

Remove duplicate clear_gpu_memory / clear_all_gpus_memory from CUDAExt (already provided via stubs); avoids method overwrite during precompile.

4. CairoMakie extension — savefig_monitoring_results (ext/CairoMakieExt.jl, stubs)

• Split single-symbol vs multi-symbol dispatch (fixes StackOverflow)
• Generic stub signatures to avoid overwrite with extension methods
• Optional filename and prefix keyword arguments
• Tiled summary figure when saving all monitoring metrics to one file

5. Minor

CUDAExt.jl, implementations/general.jl, stubs_general.jl, stubs_monitoring.jl, Project.toml compat adjustments.

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Files Changed

 Project.toml
 ext/CUDAExt/CUDAExt.jl
 ext/CUDAExt/cuda_wrappers.jl
 ext/CUDAExt/implementations/general.jl
 ext/CUDAExt/implementations/gpuinfo.jl
 ext/CUDAExt/utility.jl
 ext/CairoMakieExt.jl
 src/GPUInspector.jl
 src/stubs/stubs_general.jl
 src/stubs/stubs_monitoring.jl

10 files, +118 / −48 lines vs main. No merge conflicts with upstream main.

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Test plan

# CPU-only / precompile
julia --project -e 'using Pkg; Pkg.instantiate(); using GPUInspector'

# With CUDA + GPU (if available)
julia --project -e 'using GPUInspector; using CUDA; CUDA.functional() && GPUInspector.gpus()'

# CairoMakie extension (monitoring plots)
julia --project -e '
  using GPUInspector, CUDA, CairoMakie
  # run a short monitoring session and call savefig_monitoring_results on the result
'

• Package precompiles without method overwrite errors
• gpus() works with CUDA.jl v5
• NVML telemetry probes (supports_get_temperature, etc.) do not throw on capable hardware
• savefig_monitoring_results(r, :temperature) and multi-symbol form complete without stack overflow
• Existing tests pass (Pkg.test())

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Open PR

https://github.com/pc2/GPUInspector.jl/compare/main...nicolamos:GPUInspector.jl:fix-cuda-wrapper-calls

Suggested PR title: Fix CUDA.jl v5 compatibility (NVML wrappers, totalmem, precompile, savefig dispatch)