/// <summary>
/// Gets the device count.
/// </summary>
/// <param name="type">The type of device.</param>
/// <returns>Number of devices of type specified.</returns>
public static int GetDeviceCount(eGPUType type)
{
int cnt = 0;
if (type == eGPUType.Emulator)
{
cnt = GPGPUs.Count(g => g.Key.StartsWith(eGPUType.Emulator.ToString()));
if (cnt == 0)
{
GetDevice(eGPUType.Emulator, 0);
cnt++;
}
}
else if (type == eGPUType.Cuda)
{
cnt += CudaGPU.GetDeviceCount();
}
else if (type == eGPUType.OpenCL)
{
foreach (var platform in ComputePlatform.Platforms)
{
cnt += platform.Devices.Count;
}
}
else
{
throw new CudafyHostException(CudafyHostException.csX_NOT_CURRENTLY_SUPPORTED, type);
}
return(cnt);
}
/// <summary>
/// Gets the device properties.
/// </summary>
/// <param name="type">The type of GPU.</param>
/// <param name="useAdvanced">Whether to get the additional device settings via the cudart dll.</param>
/// <returns>Device properties for all devices of the specified type.</returns>
public static IEnumerable <GPGPUProperties> GetDeviceProperties(eGPUType type, bool useAdvanced = true)
{
if (type == eGPUType.Emulator)
{
foreach (var kvp in GPGPUs.Where(g => g.Value is EmulatedGPU))
{
yield return(kvp.Value.GetDeviceProperties(useAdvanced));
}
}
else if (type == eGPUType.Cuda)
{
// Store the current context
CUcontext?ctx = CUDA.TryGetCurrentContext();
GPGPU currentGPU = null;
int devCnt = CudaGPU.GetDeviceCount();
for (int i = 0; i < devCnt; i++)
{
CudaGPU gpu = null;
GPGPUProperties props;
gpu = (CudaGPU)GetDevice(eGPUType.Cuda, i);
if (gpu == null)
{
throw new CudafyHostException(CudafyHostException.csDEVICE_X_NOT_FOUND, string.Format("{0}{1}", eGPUType.Cuda.ToString(), i));
}
props = gpu.GetDeviceProperties(useAdvanced);
if (ctx != null && gpu.GetDeviceContext().Pointer == ctx.Value.Pointer)
{
currentGPU = gpu;
}
yield return(props);
}
// Reset context to current GPU
if (ctx != null && currentGPU != null)
{
currentGPU.SetCurrentContext();
}
}
else if (type == eGPUType.OpenCL)
{
int deviceId = 0;
foreach (ComputeDevice computeDevice in OpenCLDevice.ComputeDevices)
{
yield return(OpenCLDevice.GetDeviceProperties(computeDevice, deviceId++));
}
}
else
{
throw new CudafyHostException(CudafyHostException.csX_NOT_CURRENTLY_SUPPORTED, type);
}
}
public static IEnumerable <string> EnumerateDevices(bool openCL = false)//out string info, out bool driverInstalled)
{
int count = 0;
string message = string.Empty;
string info = string.Empty;
IsDriverInstalled = true;
List <string> sb = new List <string>();
List <GPGPUProperties> deviceProps = new List <GPGPUProperties>();
bool failed = true;
try
{
count = openCL ? OpenCLDevice.GetDeviceCount() : CudaGPU.GetDeviceCount();
deviceProps = CudafyHost.GetDeviceProperties(openCL ? eGPUType.OpenCL : eGPUType.Cuda).ToList();
failed = false;
}
catch (DllNotFoundException dnfe)
{
sb.Add("Suitable driver not installed. " + dnfe.Message);
IsDriverInstalled = false;
}
catch (GASS.CUDA.CUDAException ex)
{
if (ex.Message == "ErrorNotInitialized")
{
sb.Add("Found 0 CUDA devices.");
}
else
{
sb.Add("CUDAException: " + ex.Message);
}
}
catch (Exception ex)
{
sb.Add("Error: " + ex.Message);
}
if (failed)
{
foreach (var s in sb)
{
yield return(s);
}
}
else
{
yield return(string.Format("Found {0} devices.\r\n", count));
foreach (var prop in deviceProps)
{
yield return("Name: " + prop.Name);
if (openCL)
{
yield return("OpenCL Version: " + prop.Capability.ToString());
}
else
{
yield return("Compute capability: " + prop.Capability.ToString());
}
if (!openCL && prop.Capability < new Version(1, 4))
{
yield return("Note: This device will not support default calls to Cudafy(). Use overloads to give specific value.");
}
yield return(string.Empty);
}
}
}