mirror of
https://github.com/NVIDIA/nvidia-container-toolkit
synced 2024-11-24 21:14:00 +00:00
95 lines
2.4 KiB
Go
95 lines
2.4 KiB
Go
/*
|
|
* Copyright (c) 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 device
|
|
|
|
import (
|
|
"strconv"
|
|
"strings"
|
|
|
|
"github.com/google/uuid"
|
|
)
|
|
|
|
// Identifier can be used to refer to a GPU or MIG device.
|
|
// This includes a device index or UUID.
|
|
type Identifier string
|
|
|
|
// IsGpuIndex checks if an identifier is a full GPU index.
|
|
func (i Identifier) IsGpuIndex() bool {
|
|
if _, err := strconv.ParseUint(string(i), 10, 0); err != nil {
|
|
return false
|
|
}
|
|
return true
|
|
}
|
|
|
|
// IsMigIndex checks if an identifier is a MIG index.
|
|
func (i Identifier) IsMigIndex() bool {
|
|
split := strings.Split(string(i), ":")
|
|
if len(split) != 2 {
|
|
return false
|
|
}
|
|
for _, s := range split {
|
|
if !Identifier(s).IsGpuIndex() {
|
|
return false
|
|
}
|
|
}
|
|
return true
|
|
}
|
|
|
|
// IsUUID checks if an identifier is a UUID.
|
|
func (i Identifier) IsUUID() bool {
|
|
return i.IsGpuUUID() || i.IsMigUUID()
|
|
}
|
|
|
|
// IsGpuUUID checks if an identifier is a GPU UUID.
|
|
// A GPU UUID must be of the form GPU-b1028956-cfa2-0990-bf4a-5da9abb51763.
|
|
func (i Identifier) IsGpuUUID() bool {
|
|
if !strings.HasPrefix(string(i), "GPU-") {
|
|
return false
|
|
}
|
|
_, err := uuid.Parse(strings.TrimPrefix(string(i), "GPU-"))
|
|
return err == nil
|
|
}
|
|
|
|
// IsMigUUID checks if an identifier is a MIG UUID.
|
|
// A MIG UUID can be of one of two forms:
|
|
// - MIG-b1028956-cfa2-0990-bf4a-5da9abb51763
|
|
// - MIG-GPU-b1028956-cfa2-0990-bf4a-5da9abb51763/3/0
|
|
func (i Identifier) IsMigUUID() bool {
|
|
if !strings.HasPrefix(string(i), "MIG-") {
|
|
return false
|
|
}
|
|
suffix := strings.TrimPrefix(string(i), "MIG-")
|
|
_, err := uuid.Parse(suffix)
|
|
if err == nil {
|
|
return true
|
|
}
|
|
split := strings.Split(suffix, "/")
|
|
if len(split) != 3 {
|
|
return false
|
|
}
|
|
if !Identifier(split[0]).IsGpuUUID() {
|
|
return false
|
|
}
|
|
for _, s := range split[1:] {
|
|
_, err := strconv.ParseUint(s, 10, 0)
|
|
if err != nil {
|
|
return false
|
|
}
|
|
}
|
|
return true
|
|
}
|