8. tiling — SC/MC & workgroups

Part: II · Foundation
Package: github.com/openfluke/welvet/tiling
Status: ok — ✅

When

You need the tiling foundation package.

Where

import "github.com/openfluke/welvet/tiling"

cd 08-tiling && source ../env.sh && go run .

Why

MatVec throughput depends on tile size and when to go multi-core vs GPU workgroups. Centralizing caps keeps Dense and friends consistent.

What

DefaultCPUTile, DefaultGPUWG, CPUTile, PreferMultiCore, GPUWorkgroupsX.

Sample output (captured)

32 true 16

Live capture from go run ./cmd/runall on local ../../welvet (exit 0).

Source

Copied from the Welvet feature book examples (openfluke.github.io/welvet/examples/08-tiling).

package main

import (
	"fmt"

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

func main() {
	tile := tiling.CPUTile(0) // default 32
	mc := tiling.PreferMultiCore(8, 256, tile)
	wg := tiling.GPUWorkgroupsX(1024, 0)
	fmt.Println(tile, mc, wg)
}