chore: unit test regressors to match estimator results

Signed-off-by: Huamin Chen <[email protected]>

Author: rootfs

pkg/model/estimator/local/regressor/local_test.go

@@ -0,0 +1,52 @@
+/*
+Copyright 2021.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package regressor
+
+import (
+	. "github.com/onsi/ginkgo/v2"
+	. "github.com/onsi/gomega"
+	"k8s.io/klog/v2"
+
+	"github.com/sustainable-computing-io/kepler/pkg/model/types"
+)
+
+var _ = Describe("Test Regressor Weight Unit (SGD model from URL)", func() {
+	It("Get Node Components Power By SGD Regression with model from URL", func() {
+		modelURL := "https://raw.githubusercontent.com/sustainable-computing-io/kepler-model-db/refs/heads/main/models/v0.7/ec2-0.7.11/rapl-sysfs/AbsPower/BPFOnly/SGDRegressorTrainer_0.json"
+
+		// Initialize the regressor with the URL
+		r := genRegressor(types.AbsPower, types.ComponentEnergySource, "", modelURL, "", types.LogarithmicTrainer)
+		err := r.Start()
+		Expect(err).To(BeNil())
+
+		r.ResetSampleIdx()
+		r.AddNodeFeatureValues(nodeFeatureValues)
+
+		powers, err := r.GetComponentsPower(false)
+		Expect(err).NotTo(HaveOccurred())
+		Expect(len(powers)).Should(Equal(1))
+
+		// Test power calculation. The results should match those from estimator
+		// The following results are from kepler-model-server tests/estimator_power_request_test.py
+		// {"trainer_name": "SGDRegressorTrainer_0", "metrics": ["bpf_cpu_time_ms", "bpf_page_cache_hit"], "system_features": ["node_info", "cpu_scaling_frequency_hertz"], "system_values": ["1", "1GHz"], "values": [[1.0, 1.0], [1.0, 1.0]], "output_type": "AbsPower", "source": "rapl-sysfs"}
+		// {'powers': {'package': [143.81524594970784, 143.81524594970784], 'core': [0.0, 0.0], 'uncore': [0.0, 0.0], 'dram': [18.616373449562538, 18.616373449562538]}, 'msg': '', 'core_ratio': 0.16666666666666666}
+		klog.Infof("Core: %v, DRAM: %v, Pkg: %v", powers[0].Core, powers[0].DRAM, powers[0].Pkg)
+		Expect(powers[0].Core).Should(BeEquivalentTo(143812))
+		Expect(powers[0].DRAM).Should(BeEquivalentTo(18616))
+		Expect(powers[0].Pkg).Should(BeEquivalentTo(143812))
+	})
+})