Add some simple tests for nvidia GPU(s)

Signed-off-by: Davanum Srinivas <davanum@gmail.com>

test/e2e/node/gpu.go

@@ -0,0 +1,206 @@
+/*
+Copyright 2024 The Kubernetes Authors.
+
+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 node
+
+import (
+	"context"
+	v1 "k8s.io/api/core/v1"
+	"k8s.io/apimachinery/pkg/api/resource"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/util/uuid"
+	clientset "k8s.io/client-go/kubernetes"
+	"k8s.io/kubernetes/test/e2e/feature"
+	"k8s.io/kubernetes/test/e2e/framework"
+	e2egpu "k8s.io/kubernetes/test/e2e/framework/gpu"
+	e2enode "k8s.io/kubernetes/test/e2e/framework/node"
+	e2epod "k8s.io/kubernetes/test/e2e/framework/pod"
+	e2eskipper "k8s.io/kubernetes/test/e2e/framework/skipper"
+	admissionapi "k8s.io/pod-security-admission/api"
+
+	"github.com/onsi/ginkgo/v2"
+	"github.com/onsi/gomega"
+)
+
+var _ = SIGDescribe(feature.GPUDevicePlugin, "Sanity test for Nvidia Device", func() {
+
+	f := framework.NewDefaultFramework("nvidia-gpu")
+	f.NamespacePodSecurityLevel = admissionapi.LevelPrivileged
+	var podClient *e2epod.PodClient
+
+	ginkgo.BeforeEach(func() {
+		e2eskipper.SkipUnlessProviderIs("aws")
+		podClient = e2epod.NewPodClient(f)
+	})
+
+	f.It("should run nvidia-smi cli", func(ctx context.Context) {
+		checkEnvironmentAndSkipIfNeeded(ctx, f.ClientSet)
+		pod := testNvidiaCLIPod()
+		pod.Spec.Containers[0].Command = []string{"nvidia-smi"}
+
+		ginkgo.By("Creating a pod that runs nvidia-smi")
+		createAndValidatePod(ctx, f, podClient, pod)
+
+		ginkgo.By("Getting logs from the pod")
+		log, err := e2epod.GetPodLogs(ctx, f.ClientSet, f.Namespace.Name, pod.Name, pod.Spec.Containers[0].Name)
+		framework.ExpectNoError(err)
+
+		ginkgo.By("Checking output from nvidia-smi")
+		gomega.Expect(log).To(gomega.ContainSubstring("NVIDIA-SMI"))
+		gomega.Expect(log).To(gomega.ContainSubstring("Driver Version:"))
+		gomega.Expect(log).To(gomega.ContainSubstring("CUDA Version:"))
+	})
+
+	f.It("should run gpu based matrix multiplication", func(ctx context.Context) {
+		checkEnvironmentAndSkipIfNeeded(ctx, f.ClientSet)
+		pod := testMatrixMultiplicationPod()
+
+		ginkgo.By("Creating a pod that runs matrix multiplication")
+		createAndValidatePod(ctx, f, podClient, pod)
+
+		ginkgo.By("Getting logs from the pod")
+		log, err := e2epod.GetPodLogs(ctx, f.ClientSet, f.Namespace.Name, pod.Name, pod.Spec.Containers[0].Name)
+		framework.ExpectNoError(err)
+
+		ginkgo.By("Checking output from nvidia-smi")
+		gomega.Expect(log).To(gomega.ContainSubstring("TensorFlow version"))
+		gomega.Expect(log).To(gomega.ContainSubstring("Matrix multiplication result:"))
+		gomega.Expect(log).To(gomega.ContainSubstring("Time taken for 5000x5000 matrix multiplication"))
+	})
+})
+
+func createAndValidatePod(ctx context.Context, f *framework.Framework, podClient *e2epod.PodClient, pod *v1.Pod) {
+	pod = podClient.Create(ctx, pod)
+
+	ginkgo.By("Watching for error events or started pod")
+	ev, err := podClient.WaitForErrorEventOrSuccess(ctx, pod)
+	framework.ExpectNoError(err)
+	gomega.Expect(ev).To(gomega.BeNil())
+
+	ginkgo.By("Waiting for pod completion")
+	err = e2epod.WaitForPodNoLongerRunningInNamespace(ctx, f.ClientSet, pod.Name, f.Namespace.Name)
+	framework.ExpectNoError(err)
+	pod, err = podClient.Get(ctx, pod.Name, metav1.GetOptions{})
+	framework.ExpectNoError(err)
+
+	ginkgo.By("Checking that the pod succeeded")
+	gomega.Expect(pod.Status.Phase).To(gomega.Equal(v1.PodSucceeded))
+}
+
+func testNvidiaCLIPod() *v1.Pod {
+	podName := "gpu-cli-" + string(uuid.NewUUID())
+	pod := v1.Pod{
+		ObjectMeta: metav1.ObjectMeta{
+			Name:        podName,
+			Annotations: map[string]string{},
+		},
+		Spec: v1.PodSpec{
+			Containers: []v1.Container{
+				{
+					Name:  "nvidia-smi",
+					Image: "nvidia/cuda:12.3.2-runtime-ubuntu22.04",
+					Resources: v1.ResourceRequirements{
+						Limits: v1.ResourceList{
+							"nvidia.com/gpu": resource.MustParse("1"),
+						},
+					},
+				},
+			},
+			RestartPolicy: v1.RestartPolicyNever,
+		},
+	}
+	return &pod
+}
+
+func testMatrixMultiplicationPod() *v1.Pod {
+	podName := "gpu-matmul-" + string(uuid.NewUUID())
+	pod := v1.Pod{
+		ObjectMeta: metav1.ObjectMeta{
+			Name:        podName,
+			Annotations: map[string]string{},
+		},
+		Spec: v1.PodSpec{
+			Containers: []v1.Container{
+				{
+					Name:  "gpu-matmul",
+					Image: "tensorflow/tensorflow:latest-gpu",
+					Command: []string{
+						"python",
+						"-c",
+						`
+import tensorflow as tf
+import time
+
+print("TensorFlow version:", tf.__version__)
+print("Num GPUs Available: ", len(tf.config.experimental.list_physical_devices('GPU')))
+
+# Simple matrix multiplication test
+with tf.device('/GPU:0'):
+    a = tf.constant([[1.0, 2.0, 3.0], [4.0, 5.0, 6.0]])
+    b = tf.constant([[1.0, 2.0], [3.0, 4.0], [5.0, 6.0]])
+    c = tf.matmul(a, b)
+
+print("Matrix multiplication result:", c.numpy())
+
+# Performance test
+n = 5000
+start_time = time.time()
+with tf.device('/GPU:0'):
+    matrix1 = tf.random.normal((n, n))
+    matrix2 = tf.random.normal((n, n))
+    result = tf.matmul(matrix1, matrix2)
+end_time = time.time()
+
+print(f"Time taken for {n}x{n} matrix multiplication: {end_time - start_time:.2f} seconds")
+`,
+					},
+					Resources: v1.ResourceRequirements{
+						Limits: v1.ResourceList{
+							"nvidia.com/gpu": resource.MustParse("1"),
+						},
+					},
+				},
+			},
+			RestartPolicy: v1.RestartPolicyNever,
+		},
+	}
+	return &pod
+}
+
+func checkEnvironmentAndSkipIfNeeded(ctx context.Context, clientSet clientset.Interface) {
+	nodes, err := e2enode.GetReadySchedulableNodes(ctx, clientSet)
+	framework.ExpectNoError(err)
+	capacity := 0
+	allocatable := 0
+	for _, node := range nodes.Items {
+		val, ok := node.Status.Capacity[e2egpu.NVIDIAGPUResourceName]
+		if !ok {
+			continue
+		}
+		capacity += int(val.Value())
+		val, ok = node.Status.Allocatable[e2egpu.NVIDIAGPUResourceName]
+		if !ok {
+			continue
+		}
+		allocatable += int(val.Value())
+	}
+	if capacity == 0 {
+		e2eskipper.Skipf("%d ready nodes do not have any Nvidia GPU(s). Skipping...", len(nodes.Items))
+	}
+	if allocatable == 0 {
+		e2eskipper.Skipf("%d ready nodes do not have any allocatable Nvidia GPU(s). Skipping...", len(nodes.Items))
+	}
+}