mirror of
https://github.com/NVIDIA/nvidia-container-toolkit
synced 2024-11-22 16:29:18 +00:00
90 lines
2.6 KiB
Go
90 lines
2.6 KiB
Go
/**
|
|
# Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
|
|
#
|
|
# 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 proc
|
|
|
|
import (
|
|
"bufio"
|
|
"fmt"
|
|
"io"
|
|
"os"
|
|
"path/filepath"
|
|
"strings"
|
|
)
|
|
|
|
// GPUInfoField represents the field name for information specified in a GPU's information file
|
|
type GPUInfoField string
|
|
|
|
// The following constants define the fields of interest from the GPU information file
|
|
const (
|
|
GPUInfoModel = GPUInfoField("Model")
|
|
GPUInfoGPUUUID = GPUInfoField("GPU UUID")
|
|
GPUInfoBusLocation = GPUInfoField("Bus Location")
|
|
GPUInfoDeviceMinor = GPUInfoField("Device Minor")
|
|
)
|
|
|
|
// GPUInfo stores the information for a GPU as determined from its associated information file
|
|
type GPUInfo map[GPUInfoField]string
|
|
|
|
// GetInformationFilePaths returns the list of information files associated with NVIDIA GPUs.
|
|
func GetInformationFilePaths(root string) ([]string, error) {
|
|
return filepath.Glob(filepath.Join(root, "/proc/driver/nvidia/gpus/*/information"))
|
|
}
|
|
|
|
// ParseGPUInformationFile parses the specified GPU information file and constructs a GPUInfo structure
|
|
func ParseGPUInformationFile(path string) (GPUInfo, error) {
|
|
infoFile, err := os.Open(path)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("failed to open %v: %v", path, err)
|
|
}
|
|
defer infoFile.Close()
|
|
|
|
return gpuInfoFrom(infoFile), nil
|
|
}
|
|
|
|
// gpuInfoFrom parses a GPUInfo struct from the specified reader
|
|
// An information file has the following strucutre:
|
|
// $ cat /proc/driver/nvidia/gpus/0000\:06\:00.0/information
|
|
// Model: Tesla V100-SXM2-16GB
|
|
// IRQ: 408
|
|
// GPU UUID: GPU-edfee158-11c1-52b8-0517-92f30e7fac88
|
|
// Video BIOS: 88.00.41.00.01
|
|
// Bus Type: PCIe
|
|
// DMA Size: 47 bits
|
|
// DMA Mask: 0x7fffffffffff
|
|
// Bus Location: 0000:06:00.0
|
|
// Device Minor: 0
|
|
// GPU Excluded: No
|
|
func gpuInfoFrom(reader io.Reader) GPUInfo {
|
|
info := make(GPUInfo)
|
|
scanner := bufio.NewScanner(reader)
|
|
for scanner.Scan() {
|
|
line := scanner.Text()
|
|
|
|
parts := strings.SplitN(line, ":", 2)
|
|
if len(parts) != 2 {
|
|
continue
|
|
}
|
|
|
|
field := GPUInfoField(parts[0])
|
|
value := strings.TrimSpace(parts[1])
|
|
|
|
info[field] = value
|
|
}
|
|
|
|
return info
|
|
}
|