static void Main(string[] args)
{
DeviceDescriptor.TrySetDefaultDevice(DeviceDescriptor.CPUDevice);
var value = GetMinibatchData().data.DeepClone();
// var value = GetValue();
GC.Collect();
Console.WriteLine(value.IsValid); // => true
Console.WriteLine(string.Join(", ", value.Shape.Dimensions)); // => exception occurs
}
public void ValueObject_test02()
{
DeviceDescriptor.TrySetDefaultDevice(DeviceDescriptor.CPUDevice);
var value = GetMinibatchData().data.DeepClone();
// var value = GetValue();
GC.Collect();
Assert.True(value.IsValid);
Assert.Equal(3, value.Shape.Dimensions.Last());
}
public void ValueObject_test0()
{
DeviceDescriptor.TrySetDefaultDevice(DeviceDescriptor.CPUDevice);
var value = GetMinibatchData().data;
GC.Collect();
Assert.True(value.IsValid);
Action testCode = () => { var lst = value.Shape.Dimensions.ToString(); };
var ex = Record.Exception(testCode);
Assert.True(ex.Message.StartsWith("This Value object is invalid and can no longer be accessed."));
}
public void ValueObject_test0()
{
DeviceDescriptor.TrySetDefaultDevice(DeviceDescriptor.CPUDevice);
var value = GetMinibatchData().data;
GC.Collect();
Assert.True(value.IsValid);
Action testCode = () => { var lst = value.Shape.Dimensions.ToString(); };
var ex = Record.Exception(testCode);
Assert.False(value.IsValid);
}
protected override void EndProcessing()
{
DeviceDescriptor device;
if (CPUDevice)
{
device = DeviceDescriptor.CPUDevice;
}
else if (DefaultDevice)
{
device = DeviceDescriptor.UseDefaultDevice();
}
else
{
device = DeviceDescriptor.GPUDevice(GPUDeviceId);
}
WriteObject(DeviceDescriptor.TrySetDefaultDevice(device));
}
public void ValueObject_test0()
{
DeviceDescriptor.TrySetDefaultDevice(DeviceDescriptor.CPUDevice);
var value = GetMinibatchData().data;
GC.Collect();
Assert.True(value.IsValid);
var ex = Assert.Throws <System.ApplicationException>(() =>
{
var lst = value.Shape.Dimensions.ToList();
});
var result = $"This Value object is invalid and can no longer be accessed." +
$"This usually happens when a temporary Value object returned by the CNTK library is not cloned and " +
$"accessed later after it has been erased by the library. The Value objects created inside and " +
$"returned by the library from APIs like Forward, Backward etc. are temporary and are only guaranteed " +
$"to be valid until the next Forward/Backward call. If you want to access the Values later, you must " +
$"explicitly clone them.";
// Assert.True(result);
}
public MsgPackSamplerTest()
{
UnmanagedDllLoader.Load(@"..\..\..\..\lib");
DeviceDescriptor.TrySetDefaultDevice(DeviceDescriptor.CPUDevice);
}
public TrainingSessionTest()
{
UnmanagedDllLoader.Load(@"..\..\..\..\lib");
DeviceDescriptor.TrySetDefaultDevice(DeviceDescriptor.CPUDevice);
}
public MinibatchDataTest()
{
UnmanagedDllLoader.Load(@"..\..\..\..\lib");
DeviceDescriptor.TrySetDefaultDevice(DeviceDescriptor.CPUDevice);
}
public NodeGroupText()
{
UnmanagedDllLoader.Load(@"..\..\..\..\lib");
DeviceDescriptor.TrySetDefaultDevice(DeviceDescriptor.CPUDevice);
}
public ConverterTest()
{
UnmanagedDllLoader.Load(@"..\..\..\..\lib");
DeviceDescriptor.TrySetDefaultDevice(DeviceDescriptor.CPUDevice);
}
public NDArrayViewTest()
{
UnmanagedDllLoader.Load(@"..\..\..\..\lib");
DeviceDescriptor.TrySetDefaultDevice(DeviceDescriptor.CPUDevice);
}
public CompositeFunctionTest()
{
UnmanagedDllLoader.Load(@"..\..\..\..\lib");
DeviceDescriptor.TrySetDefaultDevice(DeviceDescriptor.CPUDevice);
}