cuda: Use strcmp over strncmp to properly get the default statistic for ratio metrics

[Treece-Burgess]

Pull Request Description

In the master branch, if a user provides a ratio metric i.e. cuda:::LTS.TriageCompute.lts__average_t_sector_aperture_device without a statistic then the default statistic that is added internally ends up being max instead of max_rate. This leads to the metric failing to be added to an EventSet:

[tburgess@hopper1 bin]$ ./papi_command_line cuda:::LTS.TriageCompute.lts__average_t_sector_aperture_device

This utility lets you add events from the command line interface to see if they work.

Failed adding: cuda:::LTS.TriageCompute.lts__average_t_sector_aperture_device
because: Unknown error code
No events specified!
Try running something like: ./papi_command_line PAPI_TOT_CYC

This PR resolves this behavior.

Testing

Testing was done on Hopper1 at Oregon (1 * GH200) with Cuda Toolkit 12.8.1.

• PAPI build: ✅
• PAPI utilities*: ✅
• Cuda component tests: ✅

* - papi_component_avail, papi_command_line, papi_native_avail

Author Checklist

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