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GPUAdapterInfo: subgroupMaxSize property

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.

Note: This feature is available in Web Workers.

The subgroupMaxSize read-only property of the GPUAdapterInfo interface returns the maximum supported subgroup size for the GPUAdapter. This can be used along with the subgroups feature.

Value

A number.

Examples

const adapter = await navigator.gpu.requestAdapter();
if (!adapter) {
  throw Error("Couldn't request WebGPU adapter.");
}

const adapterInfo = adapter.info;
console.log(adapterInfo.subgroupMaxSize);

Specifications

Specification
WebGPU>
# dom-gpuadapterinfo-subgroupmaxsize>

Browser compatibility

Desktop Mobile
Chrome Edge Firefox Opera Safari Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet WebView Android WebView on iOS
subgroupMaxSize
134Currently supported on ChromeOS, macOS, and Windows only.
134Currently supported on ChromeOS, macOS, and Windows only.
141Currently supported on Windows only, in all contexts except for service workers.
119Currently supported on ChromeOS, macOS, and Windows only.
 No
134Currently supported on ChromeOS, macOS, and Windows only.
 No
88Currently supported on ChromeOS, macOS, and Windows only.
 No No
134Currently supported on ChromeOS, macOS, and Windows only.
 No

See also

© 2005–2025 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/GPUAdapterInfo/subgroupMaxSize