/// <summary>
/// Constructs a new CPU runtime.
/// </summary>
/// <param name="context">The ILGPU context.</param>
/// <param name="description">The accelerator description.</param>
/// <param name="mode">The current accelerator mode.</param>
/// <param name="threadPriority">
/// The thread priority of the execution threads.
/// </param>
internal CPUAccelerator(
Context context,
CPUDevice description,
CPUAcceleratorMode mode,
ThreadPriority threadPriority)
: base(context, description)
{
NativePtr = new IntPtr(1);
DefaultStream = CreateStream();
NumThreads = description.NumThreads;
Mode = mode;
ThreadPriority = threadPriority;
UsesSequentialExecution =
Mode == CPUAcceleratorMode.Sequential ||
Mode == CPUAcceleratorMode.Auto && Debugger.IsAttached;
finishedEventPerMultiprocessor = new Barrier(NumMultiprocessors + 1);
multiprocessors = new CPUMultiprocessor[NumMultiprocessors];
for (int i = 0, e = NumMultiprocessors; i < e; ++i)
{
multiprocessors[i] = CPUMultiprocessor.Create(
this,
i,
UsesSequentialExecution);
}
Bind();
Init(context.DefautltILBackend);
}
/// <summary>
/// Constructs a new CPU-based runtime context for parallel processing.
/// </summary>
/// <param name="multiprocessor">The target CPU multiprocessor.</param>
protected CPURuntimeContext(CPUMultiprocessor multiprocessor)
{
Multiprocessor = multiprocessor
?? throw new ArgumentNullException(nameof(multiprocessor));
broadcastBuffer = new CPUMemoryBufferCache(multiprocessor.Accelerator);
broadcastBuffer.Allocate <int>(16);
}
/// <summary>
/// Constructs a new CPU-based runtime context for parallel processing.
/// </summary>
/// <param name="multiprocessor">The target CPU multiprocessor.</param>
/// <param name="numThreadsPerWarp">The number of threads per warp.</param>
public CPURuntimeWarpContext(
CPUMultiprocessor multiprocessor,
int numThreadsPerWarp)
: base(multiprocessor)
{
WarpSize = numThreadsPerWarp;
shuffleBuffer = new MemoryBufferCache(Multiprocessor.Accelerator);
shuffleBuffer.Allocate <int>(2 * sizeof(int) * numThreadsPerWarp);
}
/// <summary>
/// Constructs a new CPU-based runtime context for parallel processing.
/// </summary>
/// <param name="multiprocessor">The target CPU multiprocessor.</param>
public CPURuntimeGroupContext(CPUMultiprocessor multiprocessor)
: base(multiprocessor)
{
}
