Chapter 7

webgpu — device GEMV & shaders

github.com/openfluke/welvet/webgpu✅

Why it exists

GPU paths must bind a real adapter. Host “fake GPU” was banned so suites cannot stamp WebGPU done when ALU ran on CPU.

What it is

DenseGEMV family (incl. quant/I8/resident), DenseGEMVT/DenseDW, RMSNorm, LayerNorm fwd, Softmax family, SwiGLUFuse. Available()/InitError() gate use.

Go example

examples/07-webgpu/main.go

Run:cd welvet/examples/07-webgpu && source ../env.sh && go run .

package main

import (
	"fmt"

	"github.com/openfluke/welvet/webgpu"
)

func main() {
	if !webgpu.Available() {
		fmt.Println("no adapter:", webgpu.InitError())
		return
	}
	y := make([]float32, 2)
	err := webgpu.DenseGEMV(
		[]float32{1, 0, 0, 1},
		[]float32{1.5, 2.5},
		y, 1, 2, 2,
	)
	fmt.Println(y, err, webgpu.AdapterName())
}

Output

exit 0 · last run via go run .

no adapter: webgpu: RequestDevice: failed to request device

Authorization required, but no authorization protocol specified

Authorization required, but no authorization protocol specified

Authorization required, but no authorization protocol specified

Authorization required, but no authorization protocol specified

Authorization required, but no authorization protocol specified

Authorization required, but no authorization protocol specified

Authorization required, but no authorization protocol specified

Authorization required, but no authorization protocol specified

Authorization required, but no authorization protocol specified

Authorization required, but no authorization protocol specified