torch、(二) Generators
torch、(二) Generators
目录
class torch._C.Generator(device='cpu') → Generator
class torch._C.Generator(device='cpu') → Generator
Creates and returns a generator object which manages the state of the algorithm that produces pseudo random numbers. Used as a keyword argument in many In-place random sampling functions.
Parameters
device (torch.device, optional) – the desired device for the generator.
Returns
An torch.Generator object.
Return type
Example:
>>> g_cpu = torch.Generator()
>>> g_cuda = torch.Generator(device='cuda')device
Generator.device -> device
Gets the current device of the generator.
Example:
>>> g_cpu = torch.Generator()
>>> g_cpu.device
device(type='cpu')get_state() → Tensor
Returns the Generator state as a torch.ByteTensor.
Returns
A torch.ByteTensor which contains all the necessary bits to restore a Generator to a specific point in time.
Return type
Example:
>>> g_cpu = torch.Generator()
>>> g_cpu.get_state()initial_seed() → int
Returns the initial seed for generating random numbers.
Example:
>>> g_cpu = torch.Generator()
>>> g_cpu.initial_seed()
2147483647manual_seed(seed) → Generator
Sets the seed for generating random numbers. Returns a torch.Generator object. It is recommended to set a large seed, i.e. a number that has a good balance of 0 and 1 bits. Avoid having many 0 bits in the seed.
Parameters
seed (int) – The desired seed.
Returns
An torch.Generator object.
Return type
Example:
>>> g_cpu = torch.Generator()
>>> g_cpu.manual_seed(2147483647)seed() → int
Gets a non-deterministic random number from std::random_device or the current time and uses it to seed a Generator.
Example:
>>> g_cpu = torch.Generator()
>>> g_cpu.seed()
1516516984916set_state(new_state) → void
Sets the Generator state.
Parameters
new_state (torch.ByteTensor) – The desired state.
Example:
>>> g_cpu = torch.Generator()
>>> g_cpu_other = torch.Generator()
>>> g_cpu.set_state(g_cpu_other.get_state())