# autotuningDecision

A autotuning decision record carrying schema, selectedLocalSizeX, medianKernelUs, usedFallback, correctnessProtected, and related state.

Last updated: 2026-09-09

Package: compute.accelerator | Status: source-declared

Tags: accelerator, compute, compute.accelerator, cpu, source-example, thing, yeho

Describe accelerator capabilities and explicit placement boundaries.

```yh
external thing autotuningDecision
```

- text schema: Stores schema as text.
- int selectedLocalSizeX: Stores selected local size x as int.
- int medianKernelUs: Stores median kernel us as int.
- bool usedFallback: Stores used fallback as bool.
- bool correctnessProtected: Stores correctness protected as bool.
- text reason: Stores reason as text.
- autotuningDecision(text schema, int selectedLocalSizeX, int medianKernelUs, bool usedFallback, bool correctnessProtected, text reason): Autotuning decision.

## Use autotuningDecision

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

Verification: type checked

```yh
using compute.accelerator

// Describe accelerator capabilities and explicit placement boundaries.
autotuningDecision sample = autotuningDecision("schema", 1, 1, true, true, "reason")
Console.Log(Text.From(sample.schema))

```

Save this beside start.yh as project.mech:

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

[app]
kind = "headless"

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

```

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.accelerator--autotuningDecision/usage --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/accelerator/accelerator.yh

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