mirror of
https://github.com/NVIDIA/nvidia-container-toolkit
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833254fa59
This change allows CDI devices to be requested as mounts in the container. This enables their use in environments such as kind where environment variables or annotations cannot be used. Signed-off-by: Evan Lezar <elezar@nvidia.com>
125 lines
3.9 KiB
Go
125 lines
3.9 KiB
Go
/**
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# Copyright (c) 2022, 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 modifier
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import (
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"fmt"
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"github.com/NVIDIA/nvidia-container-toolkit/internal/config"
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"github.com/NVIDIA/nvidia-container-toolkit/internal/config/image"
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"github.com/NVIDIA/nvidia-container-toolkit/internal/cuda"
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"github.com/NVIDIA/nvidia-container-toolkit/internal/logger"
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"github.com/NVIDIA/nvidia-container-toolkit/internal/modifier/cdi"
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"github.com/NVIDIA/nvidia-container-toolkit/internal/oci"
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"github.com/NVIDIA/nvidia-container-toolkit/internal/platform-support/tegra/csv"
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"github.com/NVIDIA/nvidia-container-toolkit/internal/requirements"
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"github.com/NVIDIA/nvidia-container-toolkit/pkg/nvcdi"
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)
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const (
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visibleDevicesEnvvar = "NVIDIA_VISIBLE_DEVICES"
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visibleDevicesVoid = "void"
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nvidiaRequireJetpackEnvvar = "NVIDIA_REQUIRE_JETPACK"
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)
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// NewCSVModifier creates a modifier that applies modications to an OCI spec if required by the runtime wrapper.
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// The modifications are defined by CSV MountSpecs.
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func NewCSVModifier(logger logger.Interface, cfg *config.Config, image image.CUDA) (oci.SpecModifier, error) {
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if devices := image.DevicesFromEnvvars(visibleDevicesEnvvar); len(devices.List()) == 0 {
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logger.Infof("No modification required; no devices requested")
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return nil, nil
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}
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logger.Infof("Constructing modifier from config: %+v", *cfg)
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if err := checkRequirements(logger, image); err != nil {
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return nil, fmt.Errorf("requirements not met: %v", err)
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}
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csvFiles, err := csv.GetFileList(cfg.NVIDIAContainerRuntimeConfig.Modes.CSV.MountSpecPath)
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if err != nil {
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return nil, fmt.Errorf("failed to get list of CSV files: %v", err)
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}
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if image.Getenv(nvidiaRequireJetpackEnvvar) != "csv-mounts=all" {
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csvFiles = csv.BaseFilesOnly(csvFiles)
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}
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cdilib, err := nvcdi.New(
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nvcdi.WithLogger(logger),
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nvcdi.WithDriverRoot(cfg.NVIDIAContainerCLIConfig.Root),
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nvcdi.WithNVIDIACTKPath(cfg.NVIDIACTKConfig.Path),
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nvcdi.WithMode(nvcdi.ModeCSV),
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nvcdi.WithCSVFiles(csvFiles),
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)
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if err != nil {
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return nil, fmt.Errorf("failed to construct CDI library: %v", err)
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}
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spec, err := cdilib.GetSpec()
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if err != nil {
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return nil, fmt.Errorf("failed to get CDI spec: %v", err)
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}
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cdiModifier, err := cdi.New(
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cdi.WithLogger(logger),
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cdi.WithSpec(spec.Raw()),
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)
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if err != nil {
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return nil, fmt.Errorf("failed to construct CDI modifier: %v", err)
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}
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modifiers := Merge(
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nvidiaContainerRuntimeHookRemover{logger},
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cdiModifier,
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)
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return modifiers, nil
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}
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func checkRequirements(logger logger.Interface, image image.CUDA) error {
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if image.HasDisableRequire() {
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// TODO: We could print the real value here instead
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logger.Debugf("NVIDIA_DISABLE_REQUIRE=%v; skipping requirement checks", true)
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return nil
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}
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imageRequirements, err := image.GetRequirements()
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if err != nil {
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// TODO: Should we treat this as a failure, or just issue a warning?
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return fmt.Errorf("failed to get image requirements: %v", err)
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}
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r := requirements.New(logger, imageRequirements)
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cudaVersion, err := cuda.Version()
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if err != nil {
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logger.Warningf("Failed to get CUDA version: %v", err)
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} else {
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r.AddVersionProperty(requirements.CUDA, cudaVersion)
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}
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compteCapability, err := cuda.ComputeCapability(0)
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if err != nil {
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logger.Warningf("Failed to get CUDA Compute Capability: %v", err)
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} else {
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r.AddVersionProperty(requirements.ARCH, compteCapability)
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}
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return r.Assert()
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}
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