| private cuInit ( CUInitializationFlags Flags ) : CUResult | ||
| Flags | CUInitializationFlags | |
| Результат | CUResult | |
/// <summary>
/// Create a new instace of managed Cuda. Retains the primary cuda context of device with ID deviceId.
/// Using <see cref="CUCtxFlags.SchedAuto"/>
/// </summary>
/// <param name="deviceId">DeviceID</param>
public PrimaryContext(int deviceId)
: base(true, deviceId)
{
CUResult res;
int deviceCount = 0;
res = DriverAPINativeMethods.DeviceManagement.cuDeviceGetCount(ref deviceCount);
Debug.Write(""); //Line(String.Format("{0:G}, {1}: {2}", DateTime.Now, "cuDeviceGetCount", res));
if (res == CUResult.ErrorNotInitialized)
{
res = DriverAPINativeMethods.cuInit(CUInitializationFlags.None);
Debug.Write(""); //Line(String.Format("{0:G}, {1}: {2}", DateTime.Now, "cuInit", res));
if (res != CUResult.Success)
{
throw new CudaException(res);
}
res = DriverAPINativeMethods.DeviceManagement.cuDeviceGetCount(ref deviceCount);
Debug.Write(""); //Line(String.Format("{0:G}, {1}: {2}", DateTime.Now, "cuDeviceGetCount", res));
if (res != CUResult.Success)
{
throw new CudaException(res);
}
}
else if (res != CUResult.Success)
{
throw new CudaException(res);
}
if (deviceCount == 0)
{
throw new CudaException(CUResult.ErrorNoDevice, "Cuda initialization error: There is no device supporting CUDA", null);
}
_deviceID = deviceId;
res = DriverAPINativeMethods.DeviceManagement.cuDeviceGet(ref _device, deviceId);
Debug.Write(""); //Line(String.Format("{0:G}, {1}: {2}", DateTime.Now, "cuDeviceGet", res));
if (res != CUResult.Success)
{
throw new CudaException(res);
}
res = DriverAPINativeMethods.ContextManagement.cuDevicePrimaryCtxRetain(ref _context, _device);
Debug.Write(""); //Line(String.Format("{0:G}, {1}: {2}", DateTime.Now, "cuDevicePrimaryCtxRetain", res));
if (res != CUResult.Success)
{
throw new CudaException(res);
}
}
