fix: gpu node raw cost metrics wrong bug

Author: Code2Life

config/samples/gpu-info-config.yaml

@@ -9,3 +9,15 @@
   vendor: NVIDIA
   costPerHour: 1.89
   fp16TFlops: 312
+
+- model: NVIDIA 3090
+  fullModelName: "NVIDIA GeForce RTX 3090"
+  vendor: NVIDIA
+  costPerHour: 0.3
+  fp16TFlops: 71.2
+
+- model: NVIDIA 5060 Ti
+  fullModelName: "NVIDIA GeForce RTX 5060 Ti"
+  vendor: NVIDIA
+  costPerHour: 0.25
+  fp16TFlops: 66

internal/metrics/recorder.go

@@ -371,7 +371,7 @@ func (mr *MetricsRecorder) getWorkerRawCost(metrics *WorkerResourceMetrics, dura
 func (mr *MetricsRecorder) getNodeRawCost(metrics *NodeResourceMetrics, duration time.Duration, hourlyUnitPriceMap map[string]float64) float64 {
 	cost := 0.0
 	for _, gpuModel := range metrics.gpuModels {
-		cost += metrics.AllocatedTflops * duration.Hours() * hourlyUnitPriceMap[gpuModel]
+		cost += duration.Seconds() * hourlyUnitPriceMap[gpuModel] / 3600.0
 	}
 	return cost
 }