public unsafe void Write(CommandQueue commandQueue, ReadOnlySpan <T> data)
{
if (_disposed)
{
throw new ObjectDisposedException(GetType().FullName);
}
if (commandQueue == null)
{
throw new ArgumentNullException(nameof(commandQueue));
fixed(void *ptr = data)
{
var error = Api.BufferApi.clEnqueueWriteBuffer(commandQueue.Id, Id, true, 0, (uint)Size,
(IntPtr)ptr, 0, null, out _);
error.ThrowOnError();
}
}
public CommandQueue CreateCommandQueue(Device device, bool enableProfiling, bool enableOutOfOrderExecutionMode)
{
if (_disposed)
{
throw new ObjectDisposedException(GetType().FullName);
}
if (device == null)
{
throw new ArgumentNullException(nameof(device));
}
if (!Devices.Contains(device))
{
throw new ArgumentException("Device is not attached to calling context.", nameof(device));
}
var commandQueue = new CommandQueue(this, device, enableProfiling, enableOutOfOrderExecutionMode, _openClApi.CommandQueueApi);
_attachedCommandQueues.Add(commandQueue);
return(commandQueue);
}
private unsafe Event Execute(CommandQueue commandQueue, uint workDimensions, ulong[] globalWorkSize, ulong[] globalWorkOffset, ulong[] localWorkSize = null)
{
if (workDimensions == 0)
{
throw new ArgumentOutOfRangeException(nameof(workDimensions), workDimensions, "Work dimensions must be greater than 0.");
}
if (workDimensions > commandQueue.Device.MaxWorkItemDimensions)
{
throw new ArgumentOutOfRangeException(nameof(workDimensions), workDimensions, $"Exceeding devices maximum work item dimensions of {commandQueue.Device.MaxWorkItemDimensions}");
}
var globalWorkSizeArray = globalWorkSize.ToArray();
var dimensionsWorkSize = globalWorkSizeArray.Zip(globalWorkOffset.ToArray(), (size, offset) => size + offset).ToArray();
var maxAddress = Math.Pow(2, commandQueue.Device.AddressBits) - 1;
var dimensionWorkSizeExceptions = new List <Exception>();
for (var i = 0; i < dimensionsWorkSize.Length; i++)
{
if (dimensionsWorkSize[i] > maxAddress)
{
dimensionWorkSizeExceptions.Add(new ArgumentException($"Work size + offset of dimension {i} must not exceed devices address width of {maxAddress}"));
}
}
if (dimensionWorkSizeExceptions.Any())
{
throw new AggregateException(dimensionWorkSizeExceptions);
}
var handles = new List <MemoryHandle>();
//TODO: EnqueueNDRange expects globalWorkSize-Array of size_t (ulong for 64bit, uint for 32bit!!)
var globalWorkSizeHandle = globalWorkSize.AsMemory().Pin();
handles.Add(globalWorkSizeHandle);
var globalWorkSizePtr = new UIntPtr(globalWorkSizeHandle.Pointer);
var globalWorkOffsetHandle = globalWorkOffset.AsMemory().Pin();
handles.Add(globalWorkOffsetHandle);
var globalWorkOffsetPtr = new UIntPtr(globalWorkOffsetHandle.Pointer);
var localWorkSizePtr = UIntPtr.Zero;
if (localWorkSize != null)
{
var localWorkSizeArray = localWorkSize.ToArray();
var workItemsPerWorkGroup = localWorkSizeArray.Aggregate((ulong)1, (workSize, dimWorkSize) => workSize * dimWorkSize);
if (workItemsPerWorkGroup > commandQueue.Device.MaxWorkGroupSize)
{
throw new ArgumentException($"Total number of work-items in a work-group must not exceed devices maximum work-group size of {commandQueue.Device.MaxWorkGroupSize}.");
}
var workItemSizesExceptions = new List <Exception>();
for (var i = 0; i < dimensionsWorkSize.Length; i++)
{
if (localWorkSizeArray[i] > commandQueue.Device.MaxWorkItemSizes[i])
{
workItemSizesExceptions.Add(new ArgumentException($"Number of work-items in a work-group in dimension {i} must not exceed devices maximum of {commandQueue.Device.MaxWorkItemSizes[i]}"));
}
}
if (workItemSizesExceptions.Any())
{
throw new AggregateException(workItemSizesExceptions);
}
var localWorkSizeHandle = localWorkSize.AsMemory().Pin();
handles.Add(localWorkSizeHandle);
localWorkSizePtr = new UIntPtr(localWorkSizeHandle.Pointer);
}
var error = _api.KernelApi.clEnqueueNDRangeKernel(commandQueue.Id, Id, workDimensions, globalWorkOffsetPtr,
globalWorkSizePtr, localWorkSizePtr, 0, IntPtr.Zero, out var evt);
handles.ForEach(m => m.Dispose());
error.ThrowOnError();
return(new Event(_api, evt));
}