P1: GPU Metrics Utilization
It is asked for the ~"2nd Phase" of CODECO to integrate the following metrics - in the same way that we are using CPU metrics:
### GPU Node Usage
- record: instance:gpu_usage:avg1m
```
expr: avg by (instance) (rate(jetson_prometheus_exporter_gpu{statistic="val"}[1m]))
```
- record: instance:gpu_frequency:avg1m
```
expr: avg by (instance) (jetson_prometheus_exporter_gpu{statistic="freq"})
```
### CODECO U1 - Rate of items processed / Throughput
- record: codeco_u1_rate
```
expr: sum by(node, source, type) (rate(codeco_pointpillars_items_total[$__rate_interval]))
```
@yanlong01
issue