Get total amount of GPU memory?

Question

Is there an easy and reliable way to get the total amount of the physical GPU memory?

I have tried this, but the problem is it returns 4096MB and I'm using a GTX 780 with 6144MB, so yeah not displaying correctly.

Code:

using System.Management;        

private void getGpuMem()
{
    ManagementClass c = new ManagementClass("Win32_VideoController");
    foreach (ManagementObject o in c.GetInstances())
    {
        string gpuTotalMem = String.Format("{0} ", o["AdapterRam"]);
        Debug.Write(gpuTotalMem);
    }
}

As I consider `Win32_VideoController` returns max 4gb because it is win32 util. — Valentin, Jun 02 '16 at 20:06
not sure if you looked at this https://msdn.microsoft.com/en-us/library/system.windows.gpuinformation%28v=vs.95%29.aspx?f=255&MSPPError=-2147217396 — techspider, Jun 02 '16 at 20:07
I can see the 6144MB in (winSat : dedicated video memory) is there a way to use that?Well if you have multiple GPU I just going to assume they have the same amount of memory. — Patrik Fröhler, Jun 02 '16 at 20:21

Valentin · Answer 1 · 2016-06-02T20:25:10.043

5

As it is said in the MSDN

Hardware that is not compatible with Windows Display Driver Model (WDDM) returns inaccurate property values for instances of this class.

That is why it returns 4gb.

You can try to use CUDAfy.net

GPGPU gpu = CudafyHost.GetDevice(CudafyModes.Target, CudafyModes.DeviceId);
var c = gpu.GetDeviceProperties(true);
var p = c.TotalMemory;
Console.WriteLine(p);

edited Jun 02 '16 at 20:25

answered Jun 02 '16 at 20:09

Valentin

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When I try that^^ with CUDAfy I get a huge number: 18446744073709551615 – Patrik Fröhler Jun 02 '16 at 20:44
@PatrikFröhler it's the int64 maximum number, strange – Valentin Jun 02 '16 at 20:55
How do I do "override ulong TotalMemory" maybe thats the issue? http://www.hybriddsp.com/portals/0/cudafy/html/40825c56-a74f-9b79-0613-6b6fc4736dd2.htm – Patrik Fröhler Jun 02 '16 at 21:50
@PatrikFröhler It's just the method declaration. you shouldn't override anything, can you run cudafy viewer (it's an app that goes with dll)? – Valentin Jun 02 '16 at 21:53
If I run cudafy viewer > Check for CUDA , returns : 1device GTX 780 and > Run CUDA Test, returns : CUDA directory not found. – Patrik Fröhler Jun 02 '16 at 21:59

score 0 · Answer 2 · answered Jun 03 '16 at 00:46

There is a wrapper for DirectX called SharpDX. There is a compile-able example in C++ https://code.msdn.microsoft.com/windowsdesktop/DirectX-Video-Memory-ee7d8319 A you could either recreate the code with SharpDX libraries (from the NuGet Package Manager) in visual studio, or you could just compile the C++ code and call the exe as a process from within you c# code.

Get total amount of GPU memory?

2 Answers2

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