# VkExecutionGraphPipelineScratchSizeAMDX(3) Manual Page

## Name

VkExecutionGraphPipelineScratchSizeAMDX - Structure describing the scratch space required to dispatch an execution graph

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## C Specification

The `VkExecutionGraphPipelineScratchSizeAMDX` structure is defined as:

    // Provided by VK_AMDX_shader_enqueue
    typedef struct VkExecutionGraphPipelineScratchSizeAMDX {
        VkStructureType    sType;
        void*              pNext;
        VkDeviceSize       minSize;
        VkDeviceSize       maxSize;
        VkDeviceSize       sizeGranularity;
    } VkExecutionGraphPipelineScratchSizeAMDX;

## Members

- `sType` is a VkStructureType value identifying this structure.

- `pNext` is `NULL` or a pointer to a structure extending this structure.

- `minSize` indicates the minimum scratch space required for dispatching the queried execution graph.

- `maxSize` indicates the maximum scratch space that can be used for dispatching the queried execution graph.

- `sizeGranularity` indicates the granularity at which the scratch space can be increased from `minSize`.

## Description

Applications can use any amount of scratch memory greater than `minSize` for dispatching a graph, however only the values equal to `minSize` + an integer multiple of `sizeGranularity` will be used. Greater values may result in higher performance, up to `maxSize` which indicates the most memory that an implementation can use effectively.

Valid Usage (Implicit)

- VUID-VkExecutionGraphPipelineScratchSizeAMDX-sType-sType
  `sType` must be `VK_STRUCTURE_TYPE_EXECUTION_GRAPH_PIPELINE_SCRATCH_SIZE_AMDX`

## See Also

VK_AMDX_shader_enqueue, VkDeviceSize, VkStructureType, vkGetExecutionGraphPipelineScratchSizeAMDX

## Document Notes

For more information, see the Vulkan Specification

This page is extracted from the Vulkan Specification. Fixes and changes should be made to the Specification, not directly.

## Copyright

Copyright 2014-2025 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0