public static bool IsAvailable(string hintPath = null)
{
if (_loaded)
{
return(true);
}
if (AppSwitches.DisableNativeProviders || AppSwitches.DisableMklNativeProvider)
{
return(false);
}
try
{
if (!NativeProviderLoader.TryLoad(SafeNativeMethods.DllName, hintPath))
{
return(false);
}
int a = SafeNativeMethods.query_capability(0);
int b = SafeNativeMethods.query_capability(1);
int nativeRevision = SafeNativeMethods.query_capability((int)ProviderConfig.Revision);
return(a == 0 && b == -1 && nativeRevision >= MinimumCompatibleRevision);
}
catch
{
return(false);
}
}
/// <returns>Revision</returns>
public static int Load(
string hintPath = null,
MklConsistency consistency = MklConsistency.Auto,
MklPrecision precision = MklPrecision.Double,
MklAccuracy accuracy = MklAccuracy.High)
{
if (_loaded)
{
return(_nativeRevision);
}
if (AppSwitches.DisableNativeProviders || AppSwitches.DisableMklNativeProvider)
{
throw new NotSupportedException("MKL Native Provider support is actively disabled by AppSwitches.");
}
int a, b;
try
{
NativeProviderLoader.TryLoad(SafeNativeMethods.DllName, hintPath);
a = SafeNativeMethods.query_capability(0);
b = SafeNativeMethods.query_capability(1);
_nativeRevision = SafeNativeMethods.query_capability((int)ProviderConfig.Revision);
_nativeX86 = SafeNativeMethods.query_capability((int)ProviderPlatform.x86) > 0;
_nativeX64 = SafeNativeMethods.query_capability((int)ProviderPlatform.x64) > 0;
_nativeIA64 = SafeNativeMethods.query_capability((int)ProviderPlatform.ia64) > 0;
// set numerical consistency, precision and accuracy modes, if supported
if (SafeNativeMethods.query_capability((int)ProviderConfig.Precision) > 0)
{
SafeNativeMethods.set_consistency_mode((int)consistency);
SafeNativeMethods.set_vml_mode((uint)precision | (uint)accuracy);
}
// set threading settings, if supported
if (SafeNativeMethods.query_capability((int)ProviderConfig.Threading) > 0)
{
SafeNativeMethods.set_max_threads(Control.MaxDegreeOfParallelism);
}
_mklVersion = new Version(
SafeNativeMethods.query_capability((int)ProviderConfig.MklMajorVersion),
SafeNativeMethods.query_capability((int)ProviderConfig.MklMinorVersion),
SafeNativeMethods.query_capability((int)ProviderConfig.MklUpdateVersion));
}
catch (DllNotFoundException e)
{
throw new NotSupportedException("MKL Native Provider not found.", e);
}
catch (BadImageFormatException e)
{
throw new NotSupportedException("MKL Native Provider found but failed to load. Please verify that the platform matches (x64 vs x32, Windows vs Linux).", e);
}
catch (EntryPointNotFoundException e)
{
throw new NotSupportedException("MKL Native Provider does not support capability querying and is therefore not compatible. Consider upgrading to a newer version.", e);
}
if (a != 0 || b != -1 || _nativeRevision < MinimumCompatibleRevision)
{
throw new NotSupportedException("MKL Native Provider too old. Consider upgrading to a newer version.");
}
_loaded = true;
return(_nativeRevision);
}