Move gpu_util.go to e2e/framework/gpu

test/e2e/framework/gpu/gpu_util.go

@@ -0,0 +1,82 @@
+/*
+Copyright 2017 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 gpu
+
+import (
+	v1 "k8s.io/api/core/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/util/uuid"
+	"k8s.io/klog"
+	"k8s.io/kubernetes/test/e2e/framework"
+)
+
+const (
+	// NVIDIAGPUResourceName is the extended name of the GPU resource since v1.8
+	// this uses the device plugin mechanism
+	NVIDIAGPUResourceName = "nvidia.com/gpu"
+
+	// GPUDevicePluginDSYAML is the official Google Device Plugin Daemonset NVIDIA GPU manifest for GKE
+	// TODO: Parametrize it by making it a feature in TestFramework.
+	// so we can override the daemonset in other setups (non COS).
+	GPUDevicePluginDSYAML = "https://raw.githubusercontent.com/kubernetes/kubernetes/master/cluster/addons/device-plugins/nvidia-gpu/daemonset.yaml"
+)
+
+// NumberOfNVIDIAGPUs returns the number of GPUs advertised by a node
+// This is based on the Device Plugin system and expected to run on a COS based node
+// After the NVIDIA drivers were installed
+// TODO make this generic and not linked to COS only
+func NumberOfNVIDIAGPUs(node *v1.Node) int64 {
+	val, ok := node.Status.Capacity[NVIDIAGPUResourceName]
+	if !ok {
+		return 0
+	}
+	return val.Value()
+}
+
+// NVIDIADevicePlugin returns the official Google Device Plugin pod for NVIDIA GPU in GKE
+func NVIDIADevicePlugin() *v1.Pod {
+	ds, err := framework.DsFromManifest(GPUDevicePluginDSYAML)
+	framework.ExpectNoError(err)
+	p := &v1.Pod{
+		ObjectMeta: metav1.ObjectMeta{
+			Name:      "device-plugin-nvidia-gpu-" + string(uuid.NewUUID()),
+			Namespace: metav1.NamespaceSystem,
+		},
+		Spec: ds.Spec.Template.Spec,
+	}
+	// Remove node affinity
+	p.Spec.Affinity = nil
+	return p
+}
+
+// GetGPUDevicePluginImage returns the image of GPU device plugin.
+func GetGPUDevicePluginImage() string {
+	ds, err := framework.DsFromManifest(GPUDevicePluginDSYAML)
+	if err != nil {
+		klog.Errorf("Failed to parse the device plugin image: %v", err)
+		return ""
+	}
+	if ds == nil {
+		klog.Errorf("Failed to parse the device plugin image: the extracted DaemonSet is nil")
+		return ""
+	}
+	if len(ds.Spec.Template.Spec.Containers) < 1 {
+		klog.Errorf("Failed to parse the device plugin image: cannot extract the container from YAML")
+		return ""
+	}
+	return ds.Spec.Template.Spec.Containers[0].Image
+}