gpuallocator

package
v1.38.4 Latest Latest
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 Go to latest Published: Jul 8, 2025 License: Apache-2.0 Imports: 28 Imported by: 0

Documentation

Overview

Package gpuallocator handles GPU allocation

Index

Constants

View Source 
const MaxGPUCounterPerAllocation = 128

Variables

View Source 
var ScalingQuotaExceededError = goerrors.New("scaling quota exceeded")

Functions

func IsScalingQuotaExceededError added in v1.35.0 

func IsScalingQuotaExceededError(err error) bool

func RefreshGPUNodeCapacity added in v1.33.4 

func RefreshGPUNodeCapacity(ctx context.Context, k8sClient client.Client, node *tfv1.GPUNode, pool *tfv1.GPUPool) ([]string, error)

Types

type CompactFirst 

type CompactFirst struct {
	// contains filtered or unexported fields
}

CompactFirst selects GPU with minimum available resources (most utilized) to efficiently pack workloads and maximize GPU utilization

func (CompactFirst) Score added in v1.35.0 

func (c CompactFirst) Score(gpu tfv1.GPU) int

Score function is using by Kubernetes scheduler framework

func (CompactFirst) SelectGPUs 

func (c CompactFirst) SelectGPUs(gpus []tfv1.GPU, count uint) ([]*tfv1.GPU, error)

SelectGPUs selects multiple GPUs from the same node with the least available resources (most packed)

type GpuAllocator 

type GpuAllocator struct {
	client.Client
	// contains filtered or unexported fields
}

func NewGpuAllocator 

func NewGpuAllocator(ctx context.Context, client client.Client, syncInterval time.Duration) *GpuAllocator

func (*GpuAllocator) AdjustAllocation added in v1.35.0 

func (s *GpuAllocator) AdjustAllocation(ctx context.Context, adjustRequest tfv1.AdjustRequest, dryRun bool) (tfv1.Resource, error)

Used for scale up decision, dryRun to pre-check capacity to determine if the allocation is valid when scaling up, return error and the max new requests/limits on existing GPU Auto scaler can directly call AdjustAllocation for scaling down decision it has to call AdjustAllocation with dryRun=true when scaling up, if return error is ScalingQuotaExceededError, it means the allocation is invalid, and it should scale up with another AdjustRequest to make sure not exceed quota, which returns in the first returned result retry until AdjustAllocation returns nil error, at most pre-configured maxRetry times

func (*GpuAllocator) Alloc 

func (s *GpuAllocator) Alloc(req *tfv1.AllocRequest) ([]*tfv1.GPU, error)

Alloc allocates a request to a gpu or multiple gpus from the same node. This is now implemented as a combination of Filter and Bind for backward compatibility.

func (*GpuAllocator) Bind added in v1.35.0 

func (s *GpuAllocator) Bind(
	gpuNames []string,
	req *tfv1.AllocRequest,
) ([]*tfv1.GPU, error)

Bind allocates resources on the provided GPUs for the given request. It updates the in-memory store and marks the GPUs as dirty for syncing.

func (*GpuAllocator) CheckQuotaAndFilter added in v1.35.0 

func (s *GpuAllocator) CheckQuotaAndFilter(ctx context.Context, req *tfv1.AllocRequest) ([]tfv1.GPU, error)

func (*GpuAllocator) ComposeAllocationRequest added in v1.35.0 

func (s *GpuAllocator) ComposeAllocationRequest(pod *v1.Pod) (tfv1.AllocRequest, string, error)

func (*GpuAllocator) Dealloc 

func (s *GpuAllocator) Dealloc(
	workloadNameNamespace tfv1.NameNamespace,
	gpus []string,
	podMeta metav1.ObjectMeta,
)

Dealloc a request from gpu to release available resources on it.

func (*GpuAllocator) Filter added in v1.35.0 

func (s *GpuAllocator) Filter(req *tfv1.AllocRequest, toFilterGPUs []tfv1.GPU) ([]tfv1.GPU, error)

Filter applies filters to a pool of GPUs based on the provided request and returns selected GPUs. It does not modify the GPU resources, only filters and selects them.

func (*GpuAllocator) GetQuotaStore added in v1.35.0 

func (s *GpuAllocator) GetQuotaStore() *quota.QuotaStore

func (*GpuAllocator) InitGPUAndQuotaStore added in v1.35.0 

func (s *GpuAllocator) InitGPUAndQuotaStore() error

InitGPUAndQuotaStore initializes both GPU store and quota store from Kubernetes

func (*GpuAllocator) ReconcileAllocationState added in v1.35.0 

func (s *GpuAllocator) ReconcileAllocationState()

When it's leader, should reconcile state based on existing workers this function is run inside storeMutex lock

func (*GpuAllocator) Score added in v1.35.0 

func (s *GpuAllocator) Score(ctx context.Context, cfg *config.GPUFitConfig, req tfv1.AllocRequest, validNodeGPUs map[string][]tfv1.GPU) map[string]map[string]int

First level is k8s node name, second level is GPU name, value is score

func (*GpuAllocator) Select added in v1.35.0 

func (s *GpuAllocator) Select(req *tfv1.AllocRequest, filteredGPUs []tfv1.GPU) ([]*tfv1.GPU, error)

func (*GpuAllocator) SetMaxWorkerPerNode added in v1.35.0 

func (s *GpuAllocator) SetMaxWorkerPerNode(maxWorkerPerNode int)

AllocRequest encapsulates all parameters needed for GPU allocation

func (*GpuAllocator) SetupWithManager 

func (s *GpuAllocator) SetupWithManager(ctx context.Context, mgr manager.Manager) (<-chan struct{}, error)

SetupWithManager sets up the GpuAllocator with the Manager.

func (*GpuAllocator) StartInformerForGPU added in v1.35.0 

func (s *GpuAllocator) StartInformerForGPU(ctx context.Context, mgr manager.Manager) error

func (*GpuAllocator) Stop 

func (s *GpuAllocator) Stop()

Stop stops all background goroutines

func (*GpuAllocator) SyncGPUsToK8s added in v1.35.0 

func (s *GpuAllocator) SyncGPUsToK8s()

SyncGPUsToK8s syncs GPU status to Kubernetes

type LowLoadFirst 

type LowLoadFirst struct {
	// contains filtered or unexported fields
}

LowLoadFirst selects GPU with maximum available resources (least utilized) to distribute workloads more evenly across GPUs

func (LowLoadFirst) Score added in v1.35.0 

func (l LowLoadFirst) Score(gpu tfv1.GPU) int

Score function is using by Kubernetes scheduler framework

func (LowLoadFirst) SelectGPUs 

func (l LowLoadFirst) SelectGPUs(gpus []tfv1.GPU, count uint) ([]*tfv1.GPU, error)

SelectGPUs selects multiple GPUs from the same node with the most available resources (least loaded)

type Strategy 

type Strategy interface {
	Score(gpu tfv1.GPU) int

	SelectGPUs(gpus []tfv1.GPU, count uint) ([]*tfv1.GPU, error)
}

func NewStrategy 

func NewStrategy(placementMode tfv1.PlacementMode, cfg *config.GPUFitConfig) Strategy

NewStrategy creates a strategy based on the placement mode

Source Files

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Directories

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