internal OpenCLDevice(OpenCLPlatform platform, CLDeviceHandle handle)
{
Handle = handle;
SetID(Handle.Value);
this.Platform = platform;
}
/// <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");
}
/// <summary>
/// Creates a new <see cref="OpenCLContext"/> on a collection of <see cref="OpenCLDevice"/>s.
/// </summary>
/// <param name="devices"> A collection of <see cref="OpenCLDevice"/>s 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="notifyDataPtr"> Optional user data that will be passed to <paramref name="notify"/>. </param>
public OpenCLContext(List <OpenCLDevice> devices, OpenCLContextPropertyList properties, OpenCLContextNotifier notify, IntPtr notifyDataPtr)
{
int handleCount;
CLDeviceHandle[] deviceHandles = OpenCLTools.ExtractHandles(devices, out handleCount);
IntPtr[] propertyArray = (properties != null) ? properties.ToIntPtrArray() : null;
callback = notify;
OpenCLErrorCode error = OpenCLErrorCode.Success;
Handle = CL10.CreateContext(propertyArray, handleCount, deviceHandles, notify, notifyDataPtr, 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");
}
/// <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");
}
/// <summary>
/// Creates a new <see cref="OpenCLContext"/> on a collection of <see cref="OpenCLDevice"/>s.
/// </summary>
/// <param name="devices"> A collection of <see cref="OpenCLDevice"/>s 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="notifyDataPtr"> Optional user data that will be passed to <paramref name="notify"/>. </param>
public OpenCLContext(List<OpenCLDevice> devices, OpenCLContextPropertyList properties, OpenCLContextNotifier notify, IntPtr notifyDataPtr)
{
int handleCount;
CLDeviceHandle[] deviceHandles = OpenCLTools.ExtractHandles(devices, out handleCount);
IntPtr[] propertyArray = (properties != null) ? properties.ToIntPtrArray() : null;
callback = notify;
OpenCLErrorCode error = OpenCLErrorCode.Success;
Handle = CL10.CreateContext(propertyArray, handleCount, deviceHandles, notify, notifyDataPtr, 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");
}
/// <summary>
/// Creates a new <see cref="OpenCLContextPropertyList"/> which contains a single item specifying a <see cref="OpenCLPlatform"/>.
/// </summary>
/// <param name="platform"> A <see cref="OpenCLPlatform"/>. </param>
public OpenCLContextPropertyList(OpenCLPlatform platform)
{
properties = new List <OpenCLContextProperty>();
properties.Add(new OpenCLContextProperty(OpenCLContextProperties.Platform, platform.Handle.Value));
}
private static void RunKernel(OpenCLPlatform platform, OpenCLDevice device)
{
var context = new OpenCLContext(new List<OpenCLDevice> {device}, new OpenCLContextPropertyList(platform), null, IntPtr.Zero);
var program = LoadProgram(context, device, "ReductionUsingFSCLOpenCLManagedWrapper.reduction.cl");
var kernel1 = program.CreateKernel("reductionVector");
var kernel2 = program.CreateKernel("reductionComplete");
const int numValues = 1024 * 1024;
const int numValuesPerWorkItem = 4;
var globalWorkSize = numValues / numValuesPerWorkItem;
const int localWorkSize = 32;
var initialNumWorkGroups = globalWorkSize/localWorkSize;
const int value = 42;
var data = Enumerable.Repeat(value, numValues).Select(n => (float)n).ToArray();
var commandQueue = new OpenCLCommandQueue(context, device, OpenCLCommandQueueProperties.None);
var floatType = typeof (float);
var floatSize = sizeof (float);
var dataBuffer1 = new OpenCLBuffer(context, OpenCLMemoryFlags.ReadWrite | OpenCLMemoryFlags.AllocateHostPointer, floatType, new long[] {numValues});
var dataBuffer2 = new OpenCLBuffer(context, OpenCLMemoryFlags.ReadWrite | OpenCLMemoryFlags.AllocateHostPointer, floatType, new long[] {initialNumWorkGroups*numValuesPerWorkItem});
var sumBuffer = new OpenCLBuffer(context, OpenCLMemoryFlags.WriteOnly | OpenCLMemoryFlags.AllocateHostPointer, floatType, new long[] { 1 });
var resultDataBuffer = dataBuffer2;
using (var pinnedData = new PinnedObject(data))
{
commandQueue.WriteToBuffer(pinnedData, dataBuffer1, true, 0L, numValues);
}
foreach (var index in Enumerable.Range(0, int.MaxValue))
{
var dataBufferIn = index%2 == 0 ? dataBuffer1 : dataBuffer2;
var dataBufferOut = index%2 == 0 ? dataBuffer2 : dataBuffer1;
resultDataBuffer = dataBufferOut;
kernel1.SetMemoryArgument(0, dataBufferIn);
kernel1.SetMemoryArgument(1, dataBufferOut);
kernel1.SetLocalArgument(2, localWorkSize*numValuesPerWorkItem*floatSize);
Console.WriteLine($"Calling commandQueue.Execute(kernel1) with globalWorkSize: {globalWorkSize}; localWorkSize: {localWorkSize}; num work groups: {globalWorkSize / localWorkSize}");
commandQueue.Execute(kernel1, null, new long[] {globalWorkSize}, new long[] {localWorkSize});
globalWorkSize /= localWorkSize;
if (globalWorkSize <= localWorkSize) break;
}
kernel2.SetMemoryArgument(0, resultDataBuffer);
kernel2.SetLocalArgument(1, globalWorkSize*numValuesPerWorkItem*floatSize);
kernel2.SetMemoryArgument(2, sumBuffer);
Console.WriteLine($"Calling commandQueue.Execute(kernel2) with globalWorkSize: {globalWorkSize}; localWorkSize: {globalWorkSize}");
commandQueue.Execute(kernel2, null, new long[] { globalWorkSize }, new long[] { globalWorkSize });
commandQueue.Finish();
var sum = new float[1];
using (var pinnedSum = new PinnedObject(sum))
{
commandQueue.ReadFromBuffer(sumBuffer, pinnedSum, true, 0L, 1L);
}
const int correctAnswer = numValues * value;
Console.WriteLine($"OpenCL final answer: {Math.Truncate(sum[0]):N0}; Correct answer: {correctAnswer:N0}");
}
