# graphCheckpointPolicy

A graph checkpoint policy record carrying key, format, location, includeModelState, includeOptimizerState, and related state.

Last updated: 2026-09-09

Package: compute.graph | Status: source-declared

Tags: compute, compute.graph, cpu, graph, method, source-example, thing, yeho

Describe compute work as an explicit graph with package-owned validation and scheduling metadata.

```yh
external thing graphCheckpointPolicy
```

- text key: Stores key as text.
- text format: Stores format as text.
- text location: Stores location as text.
- bool includeModelState: Stores include model state as bool.
- bool includeOptimizerState: Stores include optimizer state as bool.
- bool includeRngState: Stores include rng state as bool.
- int keepLatestCount: Stores keep latest count as int.
- text note: Stores note as text.
- graphCheckpointPolicy(text key, text format, text location, bool includeModelState, bool includeOptimizerState, bool includeRngState, int keepLatestCount, text note): Graph checkpoint policy.
- CanResume() returns bool: Can resume.
- Describe() returns text: Describe.

## Use graphCheckpointPolicy

A complete small caller. Values are illustrative; check the returned result and package requirements before connecting live resources.

Verification: type checked

```yh
using compute.graph

// Describe compute work as an explicit graph with package-owned validation and scheduling metadata.
graphCheckpointPolicy sample = graphCheckpointPolicy("key", "png", "location", true, true, true, 1, "note")
Console.Log(Text.From(sample.key))

```

Save this beside start.yh as project.mech:

```toml
manifestVersion = "2"
package = "api.example.compute_graph__graphcheckpointpolicy"
version = "0.1.0"
languageEdition = "yeho-core-2026.1"

[app]
kind = "headless"

[[dependencies]]
package = "compute.buffer"
version = "0.1.0"
path = "../../../yeho/packages/compute/buffer"

[[dependencies]]
package = "compute.device"
version = "0.1.0"
path = "../../../yeho/packages/compute/device"

[[dependencies]]
package = "compute.graph"
version = "0.1.0"
path = "../../../yeho/packages/compute/graph"

[[dependencies]]
package = "compute.kernels"
version = "0.1.0"
path = "../../../yeho/packages/compute/kernels"

[[dependencies]]
package = "compute.tensor"
version = "0.1.0"
path = "../../../yeho/packages/compute/tensor"

[[dependencies]]
package = "console"
version = "0.1.0"
path = "../../../yeho/packages/console"

[[dependencies]]
package = "diagnostics"
version = "0.1.0"
path = "../../../yeho/packages/diagnostics"

```

Extract the example archive beside the yeho and dolphin checkouts. This example requires those source dependencies and a current developer compiler.

```sh
./yeho/build/dolphin-metal/yehoc ./api-examples/compute.graph--graphCheckpointPolicy/usage --backend cpu-oracle -o /tmp/yeho-example
/tmp/yeho-example
```


## graphCheckpointPolicy.CanResume

A complete caller for this public method. Sample inputs are illustrative; native resources require their owning lifecycle.

Verification: type checked

```yh
using compute.graph

// Can resume.
graphCheckpointPolicy instance = graphCheckpointPolicy("key", "png", "location", true, true, true, 1, "note")
bool result = instance.CanResume()
Console.Log(Text.From(result))

```

Save this beside start.yh as project.mech:

```toml
manifestVersion = "2"
package = "api.example.compute_graph__graphcheckpointpolicy"
version = "0.1.0"
languageEdition = "yeho-core-2026.1"

[app]
kind = "headless"

[[dependencies]]
package = "compute.buffer"
version = "0.1.0"
path = "../../../yeho/packages/compute/buffer"

[[dependencies]]
package = "compute.device"
version = "0.1.0"
path = "../../../yeho/packages/compute/device"

[[dependencies]]
package = "compute.graph"
version = "0.1.0"
path = "../../../yeho/packages/compute/graph"

[[dependencies]]
package = "compute.kernels"
version = "0.1.0"
path = "../../../yeho/packages/compute/kernels"

[[dependencies]]
package = "compute.tensor"
version = "0.1.0"
path = "../../../yeho/packages/compute/tensor"

[[dependencies]]
package = "console"
version = "0.1.0"
path = "../../../yeho/packages/console"

[[dependencies]]
package = "diagnostics"
version = "0.1.0"
path = "../../../yeho/packages/diagnostics"

```

Extract the example archive beside the yeho and dolphin checkouts. This example requires those source dependencies and a current developer compiler.

```sh
./yeho/build/dolphin-metal/yehoc ./api-examples/compute.graph--graphCheckpointPolicy/method-CanResume-9 --backend cpu-oracle -o /tmp/yeho-example
/tmp/yeho-example
```


## graphCheckpointPolicy.Describe

A complete caller for this public method. Sample inputs are illustrative; native resources require their owning lifecycle.

Verification: type checked

```yh
using compute.graph

// Describe.
graphCheckpointPolicy instance = graphCheckpointPolicy("key", "png", "location", true, true, true, 1, "note")
text result = instance.Describe()
Console.Log(Text.From(result))

```

Save this beside start.yh as project.mech:

```toml
manifestVersion = "2"
package = "api.example.compute_graph__graphcheckpointpolicy"
version = "0.1.0"
languageEdition = "yeho-core-2026.1"

[app]
kind = "headless"

[[dependencies]]
package = "compute.buffer"
version = "0.1.0"
path = "../../../yeho/packages/compute/buffer"

[[dependencies]]
package = "compute.device"
version = "0.1.0"
path = "../../../yeho/packages/compute/device"

[[dependencies]]
package = "compute.graph"
version = "0.1.0"
path = "../../../yeho/packages/compute/graph"

[[dependencies]]
package = "compute.kernels"
version = "0.1.0"
path = "../../../yeho/packages/compute/kernels"

[[dependencies]]
package = "compute.tensor"
version = "0.1.0"
path = "../../../yeho/packages/compute/tensor"

[[dependencies]]
package = "console"
version = "0.1.0"
path = "../../../yeho/packages/console"

[[dependencies]]
package = "diagnostics"
version = "0.1.0"
path = "../../../yeho/packages/diagnostics"

```

Extract the example archive beside the yeho and dolphin checkouts. This example requires those source dependencies and a current developer compiler.

```sh
./yeho/build/dolphin-metal/yehoc ./api-examples/compute.graph--graphCheckpointPolicy/method-Describe-10 --backend cpu-oracle -o /tmp/yeho-example
/tmp/yeho-example
```


Package presence and a declaration do not establish support on every host. Host services need their platform and lifecycle setup.

Source: yeho/packages/compute/graph/training.yh

AI training permission: https://demonhunterlabs.com/ai-use