/// <summary>
/// Gets or creates the given type in OpenCL.
/// </summary>
/// <param name="typeNode">The type to declare.</param>
/// <returns>The declared type name.</returns>
private string GetOrCreateType(TypeNode typeNode)
{
Debug.Assert(!(typeNode is ViewType), "Invalid view type");
if (mapping.TryGetValue(typeNode, out string clName))
{
return(clName);
}
if (typeNode is PointerType pointerType)
{
// Make sure the element type is known
GetOrCreateType(pointerType.ElementType);
clName = GetTypeName(typeNode);
}
else if (typeNode is StructureType structureType)
{
// Make sure all field types are known
foreach (var fieldType in structureType.Fields)
{
GetOrCreateType(fieldType);
}
clName = CLInstructions.StructTypePrefix + " " + GetTypeName(typeNode);
}
else if (typeNode is PaddingType paddingType)
{
clName = GetOrCreateType(paddingType.PrimitiveType);
}
else if (typeNode is PrimitiveType primitiveType16 &&
primitiveType16.BasicValueType == BasicValueType.Float16 &&
!Capabilities.Float16)
{
throw CLCapabilityContext.GetNotSupportedFloat16Exception();
}
/// <summary>
/// Constructs a new OpenCL accelerator reference.
/// </summary>
/// <param name="platformId">The OpenCL platform id.</param>
/// <param name="deviceId">The OpenCL device id.</param>
public CLDevice(IntPtr platformId, IntPtr deviceId)
{
if (platformId == IntPtr.Zero)
{
throw new ArgumentOutOfRangeException(nameof(platformId));
}
if (deviceId == IntPtr.Zero)
{
throw new ArgumentOutOfRangeException(nameof(deviceId));
}
Backends.Backend.EnsureRunningOnNativePlatform();
PlatformId = platformId;
DeviceId = deviceId;
InitPlatformInfo();
InitDeviceInfo();
InitGridInfo();
InitVendorAndWarpSizeInfo();
InitMemoryInfo();
InitCInfo();
InitExtensions();
// Resolve extension method
getKernelSubGroupInfo = CurrentAPI.GetExtension <clGetKernelSubGroupInfoKHR>(
platformId);
// Init capabilities
Capabilities = new CLCapabilityContext(this);
InitGenericAddressSpaceSupport();
}
/// <summary>
/// Constructs a new type generator and defines all required types
/// in OpenCL during construction.
/// </summary>
/// <param name="typeContext">The associated type context.</param>
/// <param name="capabilities">The supported capabilities.</param>
internal CLTypeGenerator(
IRTypeContext typeContext,
CLCapabilityContext capabilities)
{
TypeContext = typeContext;
Capabilities = capabilities;
// Declare primitive types
mapping[typeContext.VoidType] = "void";
mapping[typeContext.StringType] = "__constant char*";
foreach (var basicValueType in IRTypeContext.BasicValueTypes)
{
if (basicValueType == BasicValueType.Float64 &&
TypeContext.MathMode == MathMode.Fast32BitOnly)
{
continue;
}
else if (basicValueType == BasicValueType.Float16 &&
!capabilities.Float16)
{
continue;
}
else if (basicValueType == BasicValueType.Float64 &&
!capabilities.Float64)
{
continue;
}
var primitiveType = typeContext.GetPrimitiveType(basicValueType);
mapping[primitiveType] = GetBasicValueType(basicValueType);
}
}
private void ThrowIfUnsupportedAtomicOperation(AtomicValue atomic)
{
if ((atomic.ArithmeticBasicValueType == ArithmeticBasicValueType.Int64 ||
atomic.ArithmeticBasicValueType == ArithmeticBasicValueType.UInt64 ||
atomic.ArithmeticBasicValueType == ArithmeticBasicValueType.Float64) &&
!TypeGenerator.Capabilities.Int64_Atomics)
{
throw CLCapabilityContext.GetNotSupportedInt64_AtomicsException();
}
}
/// <summary>
/// Constructs a new OpenCL accelerator.
/// </summary>
/// <param name="context">The ILGPU context.</param>
/// <param name="description">The accelerator description.</param>
internal CLAccelerator(Context context, CLDevice description)
: base(context, description)
{
Backends.Backend.EnsureRunningOnNativePlatform();
if (!description.Capabilities.GenericAddressSpace)
{
throw CLCapabilityContext.GetNotSupportedGenericAddressSpaceException();
}
// Create new context
CLException.ThrowIfFailed(
CurrentAPI.CreateContext(DeviceId, out var contextPtr));
NativePtr = contextPtr;
Bind();
DefaultStream = CreateStreamInternal();
InitVendorFeatures();
InitSubGroupSupport(description);
Init(new CLBackend(Context, Capabilities, Vendor, CLStdVersion));
}
/// <summary>
/// Constructs a new OpenCL source backend.
/// </summary>
/// <param name="context">The context to use.</param>
/// <param name="capabilities">The supported capabilities.</param>
/// <param name="vendor">The associated major vendor.</param>
/// <param name="clStdVersion">The OpenCL C version passed to -cl-std.</param>
public CLBackend(
Context context,
CLCapabilityContext capabilities,
CLDeviceVendor vendor,
CLCVersion clStdVersion)
: base(
context,
capabilities,
BackendType.OpenCL,
new CLArgumentMapper(context))
{
Vendor = vendor;
CLStdVersion = clStdVersion;
InitIntrinsicProvider();
InitializeKernelTransformers(builder =>
{
var transformerBuilder = Transformer.CreateBuilder(
TransformerConfiguration.Empty);
transformerBuilder.AddBackendOptimizations <CodePlacement.GroupOperands>(
new CLAcceleratorSpecializer(
PointerType,
Context.Properties.EnableIOOperations),
context.Properties.InliningMode,
context.Properties.OptimizationLevel);
builder.Add(transformerBuilder.ToTransformer());
});
// Build a list of extensions to enable for each OpenCL kernel.
var extensionBuilder = new StringBuilder();
foreach (var extensionName in Capabilities.Extensions)
{
extensionBuilder.Append("#pragma OPENCL EXTENSION ");
extensionBuilder.Append(extensionName);
extensionBuilder.AppendLine(" : enable");
}
extensions = extensionBuilder.ToString();
}
/// <summary>
/// Constructs a new OpenCL source backend.
/// </summary>
/// <param name="context">The context to use.</param>
/// <param name="capabilities">The supported capabilities.</param>
/// <param name="vendor">The associated major vendor.</param>
public CLBackend(
Context context,
CLCapabilityContext capabilities,
CLAcceleratorVendor vendor)
: base(
context,
capabilities,
BackendType.OpenCL,
BackendFlags.None,
new CLArgumentMapper(context))
{
Vendor = vendor;
InitIntrinsicProvider();
InitializeKernelTransformers(
IntrinsicSpecializerFlags.None,
builder =>
{
var transformerBuilder = Transformer.CreateBuilder(
TransformerConfiguration.Empty);
transformerBuilder.AddBackendOptimizations(
new CLAcceleratorSpecializer(PointerType),
context.Flags,
context.OptimizationLevel);
builder.Add(transformerBuilder.ToTransformer());
});
// Build a list of extensions to enable for each OpenCL kernel.
var extensionBuilder = new StringBuilder();
foreach (var extensionName in Capabilities.Extensions)
{
extensionBuilder.Append("#pragma OPENCL EXTENSION ");
extensionBuilder.Append(extensionName);
extensionBuilder.AppendLine(" : enable");
}
extensions = extensionBuilder.ToString();
}
/// <summary>
/// Resolves the given basic-value type to an atomic OpenCL type name.
/// </summary>
/// <param name="basicValueType">The basic-value type to resolve.</param>
/// <returns>The resolved atomic OpenCL type name.</returns>
public string GetAtomicType(ArithmeticBasicValueType basicValueType) =>
basicValueType == ArithmeticBasicValueType.Float16 && !Capabilities.Float16
? throw CLCapabilityContext.GetNotSupportedFloat16Exception()
: basicValueType == ArithmeticBasicValueType.Float64 && !Capabilities.Float64
? throw CLCapabilityContext.GetNotSupportedFloat64Exception()
: AtomicTypeMapping[(int)basicValueType];
/// <summary>
/// Resolves the given basic-value type to an OpenCL type name.
/// </summary>
/// <param name="basicValueType">The basic-value type to resolve.</param>
/// <returns>The resolved OpenCL type name.</returns>
public string GetBasicValueType(BasicValueType basicValueType) =>
basicValueType == BasicValueType.Float16 && !Capabilities.Float16
? throw CLCapabilityContext.GetNotSupportedFloat16Exception()
: BasicTypeMapping[(int)basicValueType];
