public OpenCLDevice(Context context, OpenCLDeviceType deviceType, int numCUsToReserve, float fractionCUsForIRUpdate,
bool requiresTAN)
{
var deviceSettings = new OpenCLDeviceSettings {
};
deviceSettings.type = deviceType;
deviceSettings.numCUsToReserve = numCUsToReserve;
deviceSettings.fractionCUsForIRUpdate = fractionCUsForIRUpdate;
deviceSettings.requiresTAN = requiresTAN ? Bool.True : Bool.False;
var deviceList = IntPtr.Zero;
var status = API.iplOpenCLDeviceListCreate(context.Get(), ref deviceSettings, out deviceList);
if (status != Error.Success)
{
throw new Exception(string.Format("Unable to enumerate OpenCL devices. [{0}]", status));
}
var numDevices = API.iplOpenCLDeviceListGetNumDevices(deviceList);
if (numDevices <= 0)
{
API.iplOpenCLDeviceListRelease(ref deviceList);
// If we explicitly requested a device that supports TAN, or if we didn't ask for CU
// reservation, but still didn't find any devices, stop.
if (requiresTAN || numCUsToReserve == 0)
{
throw new Exception(string.Format("No OpenCL devices found."));
}
Debug.LogWarning("No OpenCL devices found that match the provided parameters, attempting to " +
"initialize without CU reservation.");
deviceSettings.numCUsToReserve = 0;
deviceSettings.fractionCUsForIRUpdate = 0.0f;
status = API.iplOpenCLDeviceListCreate(context.Get(), ref deviceSettings, out deviceList);
if (status != Error.Success)
{
throw new Exception(string.Format("Unable to enumerate OpenCL devices. [{0}]", status));
}
numDevices = API.iplOpenCLDeviceListGetNumDevices(deviceList);
if (numDevices <= 0)
{
throw new Exception(string.Format("No OpenCL devices found."));
}
}
status = API.iplOpenCLDeviceCreate(context.Get(), deviceList, 0, out mOpenCLDevice);
if (status != Error.Success)
{
API.iplOpenCLDeviceListRelease(ref deviceList);
throw new Exception(string.Format("Unable to create OpenCL device. [{0}]", status));
}
API.iplOpenCLDeviceListRelease(ref deviceList);
}
/// <summary>
/// Creates a new <see cref="OpenCLContext"/> on all the <see cref="OpenCLDevice"/>s that match the specified <see cref="OpenCLDeviceTypes"/>.
/// </summary>
/// <param name="deviceType"> A bit-field that identifies the type of <see cref="OpenCLDevice"/> to associate with the <see cref="OpenCLContext"/>. </param>
/// <param name="properties"> A <see cref="OpenCLContextPropertyList"/> of the <see cref="OpenCLContext"/>. </param>
/// <param name="notify"> A delegate instance that refers to a notification routine. This routine is a callback function that will be used by the OpenCL implementation to report information on errors that occur in the <see cref="OpenCLContext"/>. The callback function may be called asynchronously by the OpenCL implementation. It is the application's responsibility to ensure that the callback function is thread-safe and that the delegate instance doesn't get collected by the Garbage Collector until <see cref="OpenCLContext"/> is disposed. If <paramref name="notify"/> is <c>null</c>, no callback function is registered. </param>
/// <param name="userDataPtr"> Optional user data that will be passed to <paramref name="notify"/>. </param>
public OpenCLContext(OpenCLDeviceType deviceType, OpenCLContextPropertyList properties, OpenCLContextNotifier notify, IntPtr userDataPtr)
{
IntPtr[] propertyArray = (properties != null) ? properties.ToIntPtrArray() : null;
callback = notify;
OpenCLErrorCode error = OpenCLErrorCode.Success;
Handle = CL10.CreateContextFromType(propertyArray, deviceType, notify, userDataPtr, out error);
OpenCLException.ThrowOnError(error);
SetID(Handle.Value);
this.properties = properties;
OpenCLContextProperty platformProperty = properties.GetByName(OpenCLContextProperties.Platform);
this.platform = OpenCLPlatform.GetByHandle(platformProperty.Value);
this.devices = GetDevices();
//Trace.WriteLine("Create " + this + " in Thread(" + Thread.CurrentThread.ManagedThreadId + ").", "Information");
}
public extern static OpenCLErrorCode GetDeviceIDs(
CLPlatformHandle platform,
OpenCLDeviceType device_type,
Int32 num_entries,
[Out, MarshalAs(UnmanagedType.LPArray)] CLDeviceHandle[] devices,
out Int32 num_devices);
public extern static CLContextHandle CreateContextFromType(
[MarshalAs(UnmanagedType.LPArray)] IntPtr[] properties,
OpenCLDeviceType device_type,
OpenCLContextNotifier pfn_notify,
IntPtr user_data,
out OpenCLErrorCode errcode_ret);
/// <summary>
/// Creates a new <see cref="OpenCLContext"/> on all the <see cref="OpenCLDevice"/>s that match the specified <see cref="OpenCLDeviceTypes"/>.
/// </summary>
/// <param name="deviceType"> A bit-field that identifies the type of <see cref="OpenCLDevice"/> to associate with the <see cref="OpenCLContext"/>. </param>
/// <param name="properties"> A <see cref="OpenCLContextPropertyList"/> of the <see cref="OpenCLContext"/>. </param>
/// <param name="notify"> A delegate instance that refers to a notification routine. This routine is a callback function that will be used by the OpenCL implementation to report information on errors that occur in the <see cref="OpenCLContext"/>. The callback function may be called asynchronously by the OpenCL implementation. It is the application's responsibility to ensure that the callback function is thread-safe and that the delegate instance doesn't get collected by the Garbage Collector until <see cref="OpenCLContext"/> is disposed. If <paramref name="notify"/> is <c>null</c>, no callback function is registered. </param>
/// <param name="userDataPtr"> Optional user data that will be passed to <paramref name="notify"/>. </param>
public OpenCLContext(OpenCLDeviceType deviceType, OpenCLContextPropertyList properties, OpenCLContextNotifier notify, IntPtr userDataPtr)
{
IntPtr[] propertyArray = (properties != null) ? properties.ToIntPtrArray() : null;
callback = notify;
OpenCLErrorCode error = OpenCLErrorCode.Success;
Handle = CL10.CreateContextFromType(propertyArray, deviceType, notify, userDataPtr, out error);
OpenCLException.ThrowOnError(error);
SetID(Handle.Value);
this.properties = properties;
OpenCLContextProperty platformProperty = properties.GetByName(OpenCLContextProperties.Platform);
this.platform = OpenCLPlatform.GetByHandle(platformProperty.Value);
this.devices = GetDevices();
//Trace.WriteLine("Create " + this + " in Thread(" + Thread.CurrentThread.ManagedThreadId + ").", "Information");
}
public extern static OpenCLErrorCode GetDeviceIDs(
CLPlatformHandle platform,
OpenCLDeviceType device_type,
Int32 num_entries,
[Out, MarshalAs(UnmanagedType.LPArray)] CLDeviceHandle[] devices,
out Int32 num_devices);
public extern static CLContextHandle CreateContextFromType(
[MarshalAs(UnmanagedType.LPArray)] IntPtr[] properties,
OpenCLDeviceType device_type,
OpenCLContextNotifier pfn_notify,
IntPtr user_data,
out OpenCLErrorCode errcode_ret);