can you check if its getting through the ifsupported and into the pause? - Silk.NET

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King

K

King•8/6/23, 7:12 PM

Also I am getting an exception when I close the program

King

K

King•8/6/23, 7:12 PM

Fatal error. System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.
   at Silk.NET.GLFW.Glfw.WindowShouldClose(Silk.NET.GLFW.WindowHandle*)
   at Tutorial.Program.XRun(Silk.NET.Windowing.IWindow)
   at Tutorial.Program.Main(System.String[])

Fatal error. System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.
   at Silk.NET.GLFW.Glfw.WindowShouldClose(Silk.NET.GLFW.WindowHandle*)
   at Tutorial.Program.XRun(Silk.NET.Windowing.IWindow)
   at Tutorial.Program.Main(System.String[])

King

K

King•8/6/23, 7:12 PM

(XRun is where I put the code)

King

K

King•8/6/23, 7:12 PM

Maybe I'm not unsafe-ing enough?

khitiara

Kkhitiara can you check if its getting through the ifsupported and into the pause?

King

K

King•8/6/23, 7:14 PM

It does pass the X86Base.IsSupportedX86Base.IsSupported

khitiara

K

khitiaraOP•8/6/23, 7:14 PM

ok then yeah this isnt helping as much as was hoped then

King

K

King•8/6/23, 7:14 PM

As in it attempts calling Pause()

khitiara

K

khitiaraOP•8/6/23, 7:14 PM

pause just emits the x86 pausepause cpu instruction

khitiara

K

khitiaraOP•8/6/23, 7:14 PM

which hints to the cpu that this is a wait loop

King

K

King•8/6/23, 7:18 PM

Could this be a case of "cpu too old to know wtf to do with pausepause"?

King

K

King•8/6/23, 7:18 PM

Cause my CPU is pretty old

khitiara

K

khitiaraOP•8/6/23, 7:19 PM

maybe

Aqua

A

Aqua•8/6/23, 7:19 PM

Older CPUs will simply do nothing (NOP) as fast as possible.

yeah potentially

khitiara

K

khitiaraOP•8/6/23, 7:19 PM

if we have a way to nanowait we really should do closer to what raylib does in addition

khitiara

K

khitiaraOP•8/6/23, 7:19 PM

sleep to close and then spin the rest

King

K

King•8/6/23, 7:22 PM

Hm... I was gonna ask if it's even possible to nanowait cross-platform, but raylib manages it so Silk should be able too

King

K

King•8/6/23, 7:22 PM

Question is tho if RL don't just... not do their magic sleep on half the platforms

King

K

King•8/6/23, 7:22 PM

I only tried on windows

khitiara

K

khitiaraOP•8/6/23, 7:23 PM

they have diff implementations of varying platforms

khitiara

K

khitiaraOP•8/6/23, 7:23 PM

win32 sleep is evidently good enough, as is usleep on apple specifically

khitiara

K

khitiaraOP•8/6/23, 7:23 PM

and they do the magic nanowait stuff on *nix

King

K

King•8/6/23, 7:30 PM

Okay now I'm confused...

King

K

King•8/6/23, 7:30 PM

Found an article by intel mentioning the whole pause thing

King

K

King•8/6/23, 7:30 PM

And in the article they show examples of it working on a processor that is far older than mine (990X vs 7700K)

King

K

King•8/6/23, 7:31 PM

So it should work on my processor

khitiara

K

khitiaraOP•8/6/23, 7:35 PM

id honestly expect it is working but not helping as much as wed hoped

King

K

King•8/6/23, 7:37 PM

Maybe it's also task manager reporting things wrong?

khitiara

K

khitiaraOP•8/6/23, 7:38 PM

quite possible

King

K

King•8/6/23, 7:38 PM

I did read a lot of comments shunning task manager for calculating CPU completely wrong

King

K

King•8/6/23, 7:39 PM

Applications technically not using a billion CPU is reported as 100% and so on

King

K

King•8/6/23, 7:39 PM

Maybe pausepause is simply not taken into account

Aqua

A

Aqua•8/6/23, 7:40 PM

meanwhile htop reporting cpu usage as 130% when

when

Aqua

A

Aqua•8/6/23, 7:41 PM

King

K

King•8/6/23, 7:41 PM

Oh yeah I remember that from back when I poked around in linux

King

K

King•8/6/23, 7:41 PM

always so confusing seeing "cpu usage: 400%" and stuff

TechPizza

T

TechPizza•8/6/23, 7:41 PM

you all don't measure watt consumption at the wall? when

when

Perksey

P

Perksey•8/6/23, 7:42 PM

you mean you don’t have a ChipWhisperer?

King

KKing Applications technically not using a billion CPU is reported as 100% and so on

King

K

King•8/6/23, 7:42 PM

Also sadly this isn't the case... I just checked CPU temps/wattage while running and it is indeed loading the CPU to the point where it heats up and starts chewing more watts

King

K

King•8/6/23, 7:42 PM

Boo

TechPizza

T

TechPizza•8/6/23, 7:59 PM

just do cpuid in a loop, surely that's going to keep things cool when

when

Perksey

P

Perksey•8/6/23, 9:42 PM

@clawthorn try copying and pasting this into your program: https://github.com/dotnet/Silk.NET/blob/hotfix/fidgity-spinny/src/Core/Silk.NET.Core/Miscellaneous/BreakneckSleep.cs
and then doing:

const double loopsPerSecond = 10000;

var timer = new BreakneckSleep(TimeSpan.FromSeconds(1 / loopsPerSecond));
window.Initialize();
while (!window.IsClosing)
{
    window.DoEvents();
    if (!window.IsClosing)
    {
        window.DoUpdate();
    }
    if (!window.IsClosing)
    {
        window.DoRender();
    }
    timer.Sleep();
}
window.DoEvents();
window.Reset();

const double loopsPerSecond = 10000;

var timer = new BreakneckSleep(TimeSpan.FromSeconds(1 / loopsPerSecond));
window.Initialize();
while (!window.IsClosing)
{
    window.DoEvents();
    if (!window.IsClosing)
    {
        window.DoUpdate();
    }
    if (!window.IsClosing)
    {
        window.DoRender();
    }
    timer.Sleep();
}
window.DoEvents();
window.Reset();

Perksey

P

Perksey•8/6/23, 9:42 PM

we're not 100% confident in the accuracy yet (see #team-talk) but something similar to this will end up shipping eventually

King

K

King•8/6/23, 9:43 PM

Hmm... lets see

King

K

King•8/6/23, 9:48 PM

Oh! That does seem to work

King

K

King•8/6/23, 9:49 PM

Though it does make the GPU usage behave oddly

Maxine

M

Maxine•8/6/23, 9:49 PM

that's what HAPPENS when you're not RENDERING FRAMES ALL THE TIME

khitiara

K

khitiaraOP•8/6/23, 9:49 PM

gpu usage in task manager is absurdly unreliable

khitiara

K

khitiaraOP•8/6/23, 9:50 PM

but yeah you are just kinda leaving the gpu alone between frames now which will confuse the usage meter

King

K

King•8/6/23, 9:50 PM

Starts off at like... 1% gpu usage, and then slowly climbs to around 17%

King

K

King•8/6/23, 9:50 PM

over like... 10 seconds

Fatal error. System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.
   at Silk.NET.GLFW.Glfw.WindowShouldClose(Silk.NET.GLFW.WindowHandle*)
   at Tutorial.Program.XRun(Silk.NET.Windowing.IWindow)
   at Tutorial.Program.Main(System.String[])

Fatal error. System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.
   at Silk.NET.GLFW.Glfw.WindowShouldClose(Silk.NET.GLFW.WindowHandle*)
   at Tutorial.Program.XRun(Silk.NET.Windowing.IWindow)
   at Tutorial.Program.Main(System.String[])

const double loopsPerSecond = 10000;

var timer = new BreakneckSleep(TimeSpan.FromSeconds(1 / loopsPerSecond));
window.Initialize();
while (!window.IsClosing)
{
    window.DoEvents();
    if (!window.IsClosing)
    {
        window.DoUpdate();
    }
    if (!window.IsClosing)
    {
        window.DoRender();
    }
    timer.Sleep();
}
window.DoEvents();
window.Reset();

const double loopsPerSecond = 10000;

var timer = new BreakneckSleep(TimeSpan.FromSeconds(1 / loopsPerSecond));
window.Initialize();
while (!window.IsClosing)
{
    window.DoEvents();
    if (!window.IsClosing)
    {
        window.DoUpdate();
    }
    if (!window.IsClosing)
    {
        window.DoRender();
    }
    timer.Sleep();
}
window.DoEvents();
window.Reset();