Add support for Nvidia Grace

[TomTheBear]

• Added units:
  • [x] hwthread-local PMU armv8_pmuv3_0
  • [x] nvidia_scf_pmu_0
  • [x] nvidia_pcie_pmu_0
  • [x] nvidia_nvlink_c2c0_pmu_0
  • [x] nvidia_cnvlink_pmu_0 (only Grace-Hopper)
  • [x] nvidia_nvlink_c2c1_pmu_0 (only Grace-Hopper)

This PR also contains some fixes for the COMPILER setting GCCARM.

Documentation: https://docs.nvidia.com/grace-performance-tuning-guide.pdf Uncore events based on perf data in /sys/devices/nvidia*/events

[TomTheBear]

https://developer.arm.com/documentation/102375/latest/

[TomTheBear]

We identified a problem on GraceGrace systems with the current PR. The memory controller devices SCF* cover only the first socket. The second socket is not yet supported.

Thanks @JanLJL for finding this.

[TomTheBear]

The last commit fixes the Uncore device handling with perf_event mode on GraceGrace systems. Commonly one Uncore unit covers all sockets but in case of Nvidia GraceGrace, there are separate devices per socket.

Moreover, the GraceGrace test system reports CPU socket IDs 36 and 2364 which confused the lock setup.