-
Notifications
You must be signed in to change notification settings - Fork 3
/
memtest.go
91 lines (68 loc) · 2.16 KB
/
memtest.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
// Copyright (c) 2022, The Goki Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package main
import (
"fmt"
"runtime"
"github.com/goki/ki/ints"
"github.com/goki/vgpu/vgpu"
)
func init() {
// must lock main thread for gpu!
runtime.LockOSThread()
}
func main() {
if vgpu.InitNoDisplay() != nil {
return
}
gp := vgpu.NewComputeGPU()
vgpu.Debug = true
gp.Config("memtest")
fmt.Printf("Running on GPU: %s\n", gp.DeviceName)
// gp.PropsString(true) // print
sy := gp.NewComputeSystem("memtest")
sy.StaticVars = true // not working yet
pl := sy.NewPipeline("memtest")
pl.AddShaderFile("gpu_memtest", vgpu.ComputeShader, "gpu_memtest.spv")
vars := sy.Vars()
set := vars.AddSet()
n := 64
threads := 64
nInt := ints.IntMultiple(n, threads)
n = nInt // enforce optimal n's -- otherwise requires range checking
nGps := nInt / threads // dispatch n
maxBuff := (gp.GPUProps.Limits.MaxStorageBufferRange - 16) / 4
mem2g := ((1 << 31) - 1) / 4
mem1g := ((1 << 30) - 1) / 4
fmt.Printf("Sizes: Max StructuredBuffer: %X 2 GiB: %X 1 GiB: %X\n", maxBuff, mem2g, mem1g)
ban := maxBuff // this causes the error: writes to a instead of b
// ban := mem2g // works with this
bbn := maxBuff
bav := set.Add("Ba", vgpu.Uint32, int(ban), vgpu.Storage, vgpu.ComputeShader)
bbv := set.Add("Bb", vgpu.Uint32, int(bbn), vgpu.Storage, vgpu.ComputeShader)
_, _ = bav, bbv
set.ConfigVals(1) // one val per var
sy.Config() // configures vars, allocates vals, configs pipelines..
// bahost := make([]float32, bav)
// bbhost := make([]float32, bbv)
// vars.BindDynValsAllIdx(0)
cmd := sy.ComputeCmdBuff()
sy.ComputeResetBindVars(cmd, 0)
pl.ComputeDispatch(cmd, nGps, 1, 1)
sy.ComputeCmdEnd(cmd)
sy.ComputeSubmitWait(cmd)
sy.Mem.SyncValIdxFmGPU(0, "Ba", 0)
_, bavl, _ := vars.ValByIdxTry(0, "Ba", 0)
sy.Mem.SyncValIdxFmGPU(0, "Bb", 0)
_, bbvl, _ := vars.ValByIdxTry(0, "Bb", 0)
bas := bavl.UInts32()
bbs := bbvl.UInts32()
for i := 0; i < n; i++ {
fmt.Printf("%d\ta: %X\tb: %X\n", i, bas[i], bbs[i])
}
fmt.Printf("\n")
sy.Destroy()
gp.Destroy()
vgpu.Terminate()
}