/// <summary>
/// Constructs a new Cuda backend.
/// </summary>
/// <param name="context">The context to use.</param>
/// <param name="architecture">The target GPU architecture.</param>
/// <param name="instructionSet">The target GPU instruction set.</param>
public PTXBackend(
Context context,
PTXArchitecture architecture,
PTXInstructionSet instructionSet)
: base(
context,
BackendType.PTX,
BackendFlags.None,
new PTXArgumentMapper(context))
{
Architecture = architecture;
InstructionSet = instructionSet;
InitializeKernelTransformers(
Context.HasFlags(ContextFlags.EnableAssertions) ?
IntrinsicSpecializerFlags.EnableAssertions :
IntrinsicSpecializerFlags.None,
builder =>
{
var transformerBuilder = Transformer.CreateBuilder(
TransformerConfiguration.Empty);
transformerBuilder.AddBackendOptimizations(
new PTXAcceleratorSpecializer(),
context.OptimizationLevel);
builder.Add(transformerBuilder.ToTransformer());
});
}
/// <summary>
/// Returns the PTX instruction set to use, based on the PTX architecture and
/// installed CUDA drivers.
/// </summary>
/// <param name="architecture">The PTX architecture</param>
/// <param name="installedDriverVersion">The CUDA driver version</param>
/// <returns>The PTX instruction set</returns>
public static PTXInstructionSet GetInstructionSet(
PTXArchitecture architecture,
CudaDriverVersion installedDriverVersion)
{
var architectureMinDriverVersion = CudaDriverVersionUtils
.GetMinimumDriverVersion(architecture);
var minDriverVersion = architectureMinDriverVersion;
foreach (var instructionSet in PTXCodeGenerator.SupportedInstructionSets)
{
var instructionSetMinDriverVersion = CudaDriverVersionUtils.
GetMinimumDriverVersion(instructionSet);
minDriverVersion =
architectureMinDriverVersion >= instructionSetMinDriverVersion
? architectureMinDriverVersion
: instructionSetMinDriverVersion;
if (installedDriverVersion >= minDriverVersion)
{
return(instructionSet);
}
}
throw new NotSupportedException(
string.Format(
RuntimeErrorMessages.NotSupportedDriverVersion,
installedDriverVersion,
minDriverVersion));
}
/// <summary>
/// Resolves a PTX code generator for the given math-function configuration.
/// </summary>
/// <param name="minArchitecture">The target/minimum architecture.</param>
/// <returns>The resolved intrinsic representation.</returns>
private static PTXIntrinsic GetMathCodeGeneratorIntrinsic(
PTXArchitecture minArchitecture) =>
new PTXIntrinsic(
PTXMathType,
nameof(PTXMath.GenerateMathIntrinsic),
IntrinsicImplementationMode.GenerateCode,
minArchitecture);
/// <summary>
/// Constructs a new PTX intrinsic that can handle all architectures.
/// </summary>
/// <param name="handlerType">The associated target handler type.</param>
/// <param name="mode">The code-generation mode.</param>
/// <param name="architecture">The target architecture (if any).</param>
public PTXIntrinsic(
Type handlerType,
IntrinsicImplementationMode mode,
PTXArchitecture architecture)
: this(handlerType, mode)
{
MinArchitecture = architecture;
}
/// <summary>
/// Resolves the minimum CUDA driver version for the PTX architecture
/// </summary>
/// <param name="architecture">The PTX architecture</param>
/// <returns>The minimum driver version</returns>
public static CudaDriverVersion GetMinimumDriverVersion(PTXArchitecture architecture)
{
if (!ArchitectureLookup.TryGetValue(architecture, out var result))
{
throw new NotSupportedException(RuntimeErrorMessages.NotSupportedPTXArchitecture);
}
return(result);
}
/// <summary>
/// Resolves the PTX architecture for the given major and minor versions.
/// </summary>
/// <param name="major">The major version.</param>
/// <param name="minor">The minor version.</param>
/// <returns>The resolved PTX version.</returns>
public static PTXArchitecture GetArchitecture(int major, int minor)
{
var architecture = new PTXArchitecture(major, minor);
return(architecture >= PTXArchitecture.SM_30
? architecture
: throw new NotSupportedException(
RuntimeErrorMessages.NotSupportedPTXArchitecture));
}
/// <summary>
/// Creates a new PTX intrinsic.
/// </summary>
/// <param name="name">The name of the intrinsic.</param>
/// <param name="mode">The implementation mode.</param>
/// <param name="minArchitecture">The minimum architecture.</param>
/// <param name="maxArchitecture">The maximum architecture.</param>
/// <returns>The created intrinsic.</returns>
private static PTXIntrinsic CreateIntrinsic(
string name,
IntrinsicImplementationMode mode,
PTXArchitecture?minArchitecture,
PTXArchitecture maxArchitecture) =>
new PTXIntrinsic(
PTXIntrinsicsType,
name,
mode,
minArchitecture,
maxArchitecture);
/// <summary>
/// Constructs a new Cuda backend.
/// </summary>
/// <param name="context">The context to use.</param>
/// <param name="architecture">The target gpu architecture.</param>
/// <param name="platform">The target platform.</param>
public PTXBackend(
Context context,
PTXArchitecture architecture,
TargetPlatform platform)
: base(
context,
new PTXABI(context.TypeContext, platform),
new PTXArgumentMapper(context),
CreateKernelTransformers)
{
Architecture = architecture;
}
/// <summary>
/// Constructs a new PTX intrinsic.
/// </summary>
/// <param name="handlerType">The associated target handler type.</param>
/// <param name="methodName">The target method name (or null).</param>
/// <param name="mode">The code-generator mode.</param>
/// <param name="architecture">The target architecture (if any).</param>
public PTXIntrinsic(
Type handlerType,
string methodName,
IntrinsicImplementationMode mode,
PTXArchitecture architecture)
: base(
BackendType.PTX,
handlerType,
methodName,
mode)
{
MinArchitecture = architecture;
}
/// <summary>
/// Resolves the minimum CUDA driver version for the PTX architecture
/// </summary>
/// <param name="architecture">The PTX architecture</param>
/// <returns>The minimum driver version</returns>
public static CudaDriverVersion GetMinimumDriverVersion(
PTXArchitecture architecture)
{
if (ArchitectureLookup.TryGetValue(architecture, out var result))
{
return(result);
}
// If the architecture is unknown, return the highest driver version that
// we support. The user should already have a driver version higher than
// this, because they are most likely using a brand new graphics card.
return(ArchitectureLookup.OrderByDescending(x => x.Key).First().Value);
}
public GeneratorArgs(
EntryPoint entryPoint,
PTXDebugInfoGenerator debugInfoGenerator,
StringBuilder stringBuilder,
PTXArchitecture architecture,
ABI abi,
ContextFlags contextFlags)
{
EntryPoint = entryPoint;
DebugInfoGenerator = debugInfoGenerator;
StringBuilder = stringBuilder;
Architecture = architecture;
ABI = abi;
ContextFlags = contextFlags;
}
/// <summary>
/// Constructs a new Cuda backend.
/// </summary>
/// <param name="context">The context to use.</param>
/// <param name="architecture">The target gpu architecture.</param>
/// <param name="instructionSet">The target gpu instruction set.</param>
/// <param name="platform">The target platform.</param>
public PTXBackend(
Context context,
PTXArchitecture architecture,
PTXInstructionSet instructionSet,
TargetPlatform platform)
: base(
context,
BackendType.PTX,
BackendFlags.RequiresIntrinsicImplementations,
new PTXABI(context.TypeContext, platform),
_ => new PTXArgumentMapper(context))
{
Architecture = architecture;
InstructionSet = instructionSet;
InitializeKernelTransformers(
new IntrinsicSpecializerConfiguration(context.Flags),
builder =>
{
// Append further backend specific transformations in release mode
var transformerBuilder = Transformer.CreateBuilder(TransformerConfiguration.Empty);
if (context.OptimizationLevel == OptimizationLevel.Release)
{
var acceleratorConfiguration = new AcceleratorSpecializerConfiguration(ABI);
transformerBuilder.Add(
new AcceleratorSpecializer <AcceleratorSpecializerConfiguration>(
acceleratorConfiguration));
}
if (!context.HasFlags(ContextFlags.NoInlining))
{
transformerBuilder.Add(new Inliner());
}
if (context.OptimizationLevel == OptimizationLevel.Release)
{
transformerBuilder.Add(new SimplifyControlFlow());
}
var transformer = transformerBuilder.ToTransformer();
if (transformer.Length > 0)
{
builder.Add(transformer);
}
});
}
/// <summary>
/// Constructs a new Cuda backend.
/// </summary>
/// <param name="context">The context to use.</param>
/// <param name="capabilities">The supported capabilities.</param>
/// <param name="architecture">The target GPU architecture.</param>
/// <param name="instructionSet">The target GPU instruction set.</param>
public PTXBackend(
Context context,
CudaCapabilityContext capabilities,
PTXArchitecture architecture,
PTXInstructionSet instructionSet)
: base(
context,
capabilities,
BackendType.PTX,
BackendFlags.None,
new PTXArgumentMapper(context))
{
Architecture = architecture;
InstructionSet = instructionSet;
InitIntrinsicProvider();
InitializeKernelTransformers(
Context.HasFlags(ContextFlags.EnableAssertions) ?
IntrinsicSpecializerFlags.EnableAssertions :
IntrinsicSpecializerFlags.None,
builder =>
{
var transformerBuilder = Transformer.CreateBuilder(
TransformerConfiguration.Empty);
transformerBuilder.AddBackendOptimizations(
new PTXAcceleratorSpecializer(PointerType),
context.Flags,
context.OptimizationLevel);
if (Context.HasFlags(ContextFlags.EnhancedPTXBackendFeatures))
{
// Create an optimized PTX assembler block schedule
transformerBuilder.Add(new PTXBlockScheduling());
transformerBuilder.Add(new DeadCodeElimination());
}
builder.Add(transformerBuilder.ToTransformer());
});
}
/// <summary>
/// Constructs a new Cuda backend.
/// </summary>
/// <param name="context">The context to use.</param>
/// <param name="architecture">The target GPU architecture.</param>
/// <param name="instructionSet">The target GPU instruction set.</param>
public PTXBackend(
Context context,
PTXArchitecture architecture,
PTXInstructionSet instructionSet)
: base(
context,
BackendType.PTX,
BackendFlags.None,
new PTXArgumentMapper(context))
{
Architecture = architecture;
InstructionSet = instructionSet;
InitializeKernelTransformers(
Context.HasFlags(ContextFlags.EnableAssertions) ?
IntrinsicSpecializerFlags.EnableAssertions :
IntrinsicSpecializerFlags.None,
builder =>
{
var transformerBuilder = Transformer.CreateBuilder(
TransformerConfiguration.Empty);
transformerBuilder.AddBackendOptimizations(
new PTXAcceleratorSpecializer(),
context.OptimizationLevel);
// Append further backend specific transformations in release mode
if (!context.HasFlags(ContextFlags.NoInlining))
{
transformerBuilder.Add(new Inliner());
}
if (context.OptimizationLevel > OptimizationLevel.O0)
{
transformerBuilder.Add(new SimplifyControlFlow());
}
builder.Add(transformerBuilder.ToTransformer());
});
}
