mirror of
https://github.com/NVIDIA/nvidia-container-toolkit
synced 2024-11-28 15:03:23 +00:00
84 lines
2.2 KiB
Go
84 lines
2.2 KiB
Go
/**
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# Copyright (c) NVIDIA CORPORATION. All rights reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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**/
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package info
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import (
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"fmt"
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"strings"
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"github.com/NVIDIA/go-nvlib/pkg/nvlib/device"
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"github.com/NVIDIA/go-nvlib/pkg/nvlib/info"
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"github.com/NVIDIA/go-nvml/pkg/nvml"
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)
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// additionalInfo allows for the info.Interface to be extened to implement the infoInterface.
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type additionalInfo struct {
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info.Interface
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nvmllib nvml.Interface
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devicelib device.Interface
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}
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// UsesNVGPUModule checks whether the nvgpu module is used.
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// We use the device name to signal this, since devices that use the nvgpu module have their device
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// names as:
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//
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// GPU 0: Orin (nvgpu) (UUID: 54d0709b-558d-5a59-9c65-0c5fc14a21a4)
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//
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// This function returns true if ALL devices use the nvgpu module.
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func (i additionalInfo) UsesNVGPUModule() (uses bool, reason string) {
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// We ensure that this function never panics
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defer func() {
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if err := recover(); err != nil {
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uses = false
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reason = fmt.Sprintf("panic: %v", err)
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}
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}()
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ret := i.nvmllib.Init()
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if ret != nvml.SUCCESS {
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return false, fmt.Sprintf("failed to initialize nvml: %v", ret)
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}
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defer func() {
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_ = i.nvmllib.Shutdown()
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}()
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var names []string
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err := i.devicelib.VisitDevices(func(i int, d device.Device) error {
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name, ret := d.GetName()
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if ret != nvml.SUCCESS {
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return fmt.Errorf("device %v: %v", i, ret)
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}
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names = append(names, name)
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return nil
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})
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if err != nil {
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return false, fmt.Sprintf("failed to get device names: %v", err)
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}
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if len(names) == 0 {
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return false, "no devices found"
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}
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for _, name := range names {
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if !strings.Contains(name, "(nvgpu)") {
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return false, fmt.Sprintf("device %q does not use nvgpu module", name)
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}
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}
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return true, "all devices use nvgpu module"
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}
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