665 lines
25 KiB
Python
665 lines
25 KiB
Python
import contextlib
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import dataclasses
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import math
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import textwrap
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from typing import Any, Dict, Optional
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import torch
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from torch import inf
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@dataclasses.dataclass
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class __PrinterOptions:
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precision: int = 4
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threshold: float = 1000
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edgeitems: int = 3
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linewidth: int = 80
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sci_mode: Optional[bool] = None
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PRINT_OPTS = __PrinterOptions()
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# We could use **kwargs, but this will give better docs
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def set_printoptions(
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precision=None,
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threshold=None,
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edgeitems=None,
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linewidth=None,
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profile=None,
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sci_mode=None,
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):
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r"""Set options for printing. Items shamelessly taken from NumPy
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Args:
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precision: Number of digits of precision for floating point output
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(default = 4).
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threshold: Total number of array elements which trigger summarization
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rather than full `repr` (default = 1000).
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edgeitems: Number of array items in summary at beginning and end of
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each dimension (default = 3).
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linewidth: The number of characters per line for the purpose of
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inserting line breaks (default = 80). Thresholded matrices will
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ignore this parameter.
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profile: Sane defaults for pretty printing. Can override with any of
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the above options. (any one of `default`, `short`, `full`)
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sci_mode: Enable (True) or disable (False) scientific notation. If
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None (default) is specified, the value is defined by
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`torch._tensor_str._Formatter`. This value is automatically chosen
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by the framework.
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Example::
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>>> # Limit the precision of elements
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>>> torch.set_printoptions(precision=2)
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>>> torch.tensor([1.12345])
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tensor([1.12])
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>>> # Limit the number of elements shown
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>>> torch.set_printoptions(threshold=5)
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>>> torch.arange(10)
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tensor([0, 1, 2, ..., 7, 8, 9])
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>>> # Restore defaults
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>>> torch.set_printoptions(profile='default')
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>>> torch.tensor([1.12345])
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tensor([1.1235])
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>>> torch.arange(10)
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tensor([0, 1, 2, 3, 4, 5, 6, 7, 8, 9])
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"""
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if profile is not None:
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if profile == "default":
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PRINT_OPTS.precision = 4
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PRINT_OPTS.threshold = 1000
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PRINT_OPTS.edgeitems = 3
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PRINT_OPTS.linewidth = 80
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elif profile == "short":
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PRINT_OPTS.precision = 2
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PRINT_OPTS.threshold = 1000
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PRINT_OPTS.edgeitems = 2
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PRINT_OPTS.linewidth = 80
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elif profile == "full":
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PRINT_OPTS.precision = 4
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PRINT_OPTS.threshold = inf
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PRINT_OPTS.edgeitems = 3
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PRINT_OPTS.linewidth = 80
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if precision is not None:
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PRINT_OPTS.precision = precision
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if threshold is not None:
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PRINT_OPTS.threshold = threshold
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if edgeitems is not None:
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PRINT_OPTS.edgeitems = edgeitems
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if linewidth is not None:
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PRINT_OPTS.linewidth = linewidth
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PRINT_OPTS.sci_mode = sci_mode
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def get_printoptions() -> Dict[str, Any]:
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r"""Gets the current options for printing, as a dictionary that
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can be passed as ``**kwargs`` to set_printoptions().
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"""
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return dataclasses.asdict(PRINT_OPTS)
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@contextlib.contextmanager
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def printoptions(**kwargs):
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r"""Context manager that temporarily changes the print options. Accepted
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arguments are same as :func:`set_printoptions`."""
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old_kwargs = get_printoptions()
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set_printoptions(**kwargs)
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try:
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yield
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finally:
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set_printoptions(**old_kwargs)
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def tensor_totype(t):
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dtype = torch.float if t.is_mps else torch.double
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return t.to(dtype=dtype)
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class _Formatter:
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def __init__(self, tensor):
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self.floating_dtype = tensor.dtype.is_floating_point
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self.int_mode = True
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self.sci_mode = False
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self.max_width = 1
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with torch.no_grad():
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tensor_view = tensor.reshape(-1)
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if not self.floating_dtype:
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for value in tensor_view:
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value_str = f"{value}"
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self.max_width = max(self.max_width, len(value_str))
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else:
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nonzero_finite_vals = torch.masked_select(
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tensor_view, torch.isfinite(tensor_view) & tensor_view.ne(0)
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)
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if nonzero_finite_vals.numel() == 0:
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# no valid number, do nothing
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return
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# Convert to double for easy calculation. HalfTensor overflows with 1e8, and there's no div() on CPU.
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nonzero_finite_abs = tensor_totype(nonzero_finite_vals.abs())
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nonzero_finite_min = tensor_totype(nonzero_finite_abs.min())
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nonzero_finite_max = tensor_totype(nonzero_finite_abs.max())
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for value in nonzero_finite_vals:
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if value != torch.ceil(value):
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self.int_mode = False
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break
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if self.int_mode:
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# in int_mode for floats, all numbers are integers, and we append a decimal to nonfinites
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# to indicate that the tensor is of floating type. add 1 to the len to account for this.
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if (
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nonzero_finite_max / nonzero_finite_min > 1000.0
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or nonzero_finite_max > 1.0e8
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):
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self.sci_mode = True
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for value in nonzero_finite_vals:
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value_str = f"{{:.{PRINT_OPTS.precision}e}}".format(value)
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self.max_width = max(self.max_width, len(value_str))
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else:
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for value in nonzero_finite_vals:
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value_str = f"{value:.0f}"
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self.max_width = max(self.max_width, len(value_str) + 1)
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else:
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# Check if scientific representation should be used.
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if (
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nonzero_finite_max / nonzero_finite_min > 1000.0
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or nonzero_finite_max > 1.0e8
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or nonzero_finite_min < 1.0e-4
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):
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self.sci_mode = True
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for value in nonzero_finite_vals:
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value_str = f"{{:.{PRINT_OPTS.precision}e}}".format(value)
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self.max_width = max(self.max_width, len(value_str))
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else:
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for value in nonzero_finite_vals:
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value_str = f"{{:.{PRINT_OPTS.precision}f}}".format(value)
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self.max_width = max(self.max_width, len(value_str))
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if PRINT_OPTS.sci_mode is not None:
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self.sci_mode = PRINT_OPTS.sci_mode
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def width(self):
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return self.max_width
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def format(self, value):
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if self.floating_dtype:
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if self.sci_mode:
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ret = f"{{:{self.max_width}.{PRINT_OPTS.precision}e}}".format(value)
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elif self.int_mode:
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ret = f"{value:.0f}"
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if not (math.isinf(value) or math.isnan(value)):
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ret += "."
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else:
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ret = f"{{:.{PRINT_OPTS.precision}f}}".format(value)
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else:
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ret = f"{value}"
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return (self.max_width - len(ret)) * " " + ret
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def _scalar_str(self, formatter1, formatter2=None):
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if formatter2 is not None:
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real_str = _scalar_str(self.real, formatter1)
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imag_str = (_scalar_str(self.imag, formatter2) + "j").lstrip()
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# handles negative numbers, +0.0, -0.0
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if imag_str[0] == "+" or imag_str[0] == "-":
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return real_str + imag_str
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else:
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return real_str + "+" + imag_str
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else:
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return formatter1.format(self.item())
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def _vector_str(self, indent, summarize, formatter1, formatter2=None):
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# length includes spaces and comma between elements
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element_length = formatter1.width() + 2
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if formatter2 is not None:
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# width for imag_formatter + an extra j for complex
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element_length += formatter2.width() + 1
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elements_per_line = max(
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1, int(math.floor((PRINT_OPTS.linewidth - indent) / (element_length)))
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)
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def _val_formatter(val, formatter1=formatter1, formatter2=formatter2):
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if formatter2 is not None:
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real_str = formatter1.format(val.real)
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imag_str = (formatter2.format(val.imag) + "j").lstrip()
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# handles negative numbers, +0.0, -0.0
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if imag_str[0] == "+" or imag_str[0] == "-":
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return real_str + imag_str
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else:
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return real_str + "+" + imag_str
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else:
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return formatter1.format(val)
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if summarize and not PRINT_OPTS.edgeitems:
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# Deal with edge case that negative zero is zero
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data = ["..."]
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elif summarize and self.size(0) > 2 * PRINT_OPTS.edgeitems:
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data = (
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[_val_formatter(val) for val in self[: PRINT_OPTS.edgeitems].tolist()]
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+ [" ..."]
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+ [_val_formatter(val) for val in self[-PRINT_OPTS.edgeitems :].tolist()]
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)
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else:
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data = [_val_formatter(val) for val in self.tolist()]
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data_lines = [
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data[i : i + elements_per_line] for i in range(0, len(data), elements_per_line)
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]
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lines = [", ".join(line) for line in data_lines]
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return "[" + ("," + "\n" + " " * (indent + 1)).join(lines) + "]"
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# formatter2 is only used for printing complex tensors.
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# For complex tensors, formatter1 and formatter2 are the formatters for tensor.real
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# and tensor.imag respesectively
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def _tensor_str_with_formatter(self, indent, summarize, formatter1, formatter2=None):
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dim = self.dim()
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if dim == 0:
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return _scalar_str(self, formatter1, formatter2)
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if dim == 1:
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return _vector_str(self, indent, summarize, formatter1, formatter2)
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if summarize and self.size(0) > 2 * PRINT_OPTS.edgeitems:
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slices = (
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[
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_tensor_str_with_formatter(
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self[i], indent + 1, summarize, formatter1, formatter2
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)
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for i in range(0, PRINT_OPTS.edgeitems)
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]
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+ ["..."]
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+ [
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_tensor_str_with_formatter(
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self[i], indent + 1, summarize, formatter1, formatter2
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)
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for i in range(len(self) - PRINT_OPTS.edgeitems, len(self))
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]
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)
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else:
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slices = [
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_tensor_str_with_formatter(
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self[i], indent + 1, summarize, formatter1, formatter2
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)
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for i in range(0, self.size(0))
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]
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tensor_str = ("," + "\n" * (dim - 1) + " " * (indent + 1)).join(slices)
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return "[" + tensor_str + "]"
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def _tensor_str(self, indent):
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if self.numel() == 0:
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return "[]"
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if self.has_names():
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# There are two main codepaths (possibly more) that tensor printing goes through:
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# - tensor data can fit comfortably on screen
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# - tensor data needs to be summarized
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# Some of the codepaths don't fully support named tensors, so we send in
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# an unnamed tensor to the formatting code as a workaround.
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self = self.rename(None)
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summarize = self.numel() > PRINT_OPTS.threshold
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if self._is_zerotensor():
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self = self.clone()
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# handle the negative bit
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if self.is_neg():
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self = self.resolve_neg()
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if self.dtype in [
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torch.float16,
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torch.bfloat16,
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torch.float8_e5m2,
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torch.float8_e4m3fn,
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]:
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self = self.float()
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if self.dtype is torch.complex32:
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self = self.cfloat()
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if self.dtype.is_complex:
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# handle the conjugate bit
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self = self.resolve_conj()
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real_formatter = _Formatter(
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get_summarized_data(self.real) if summarize else self.real
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)
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imag_formatter = _Formatter(
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get_summarized_data(self.imag) if summarize else self.imag
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)
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return _tensor_str_with_formatter(
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self, indent, summarize, real_formatter, imag_formatter
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)
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else:
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formatter = _Formatter(get_summarized_data(self) if summarize else self)
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return _tensor_str_with_formatter(self, indent, summarize, formatter)
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def _add_suffixes(tensor_str, suffixes, indent, force_newline):
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tensor_strs = [tensor_str]
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last_line_len = len(tensor_str) - tensor_str.rfind("\n") + 1
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for suffix in suffixes:
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suffix_len = len(suffix)
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if force_newline or last_line_len + suffix_len + 2 > PRINT_OPTS.linewidth:
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tensor_strs.append(",\n" + " " * indent + suffix)
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last_line_len = indent + suffix_len
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force_newline = False
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else:
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tensor_strs.append(", " + suffix)
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last_line_len += suffix_len + 2
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tensor_strs.append(")")
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return "".join(tensor_strs)
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def get_summarized_data(self):
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dim = self.dim()
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if dim == 0:
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return self
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if dim == 1:
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if self.size(0) > 2 * PRINT_OPTS.edgeitems:
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return torch.cat(
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(self[: PRINT_OPTS.edgeitems], self[-PRINT_OPTS.edgeitems :])
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)
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else:
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return self
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if not PRINT_OPTS.edgeitems:
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return self.new_empty([0] * self.dim())
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elif self.size(0) > 2 * PRINT_OPTS.edgeitems:
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start = [self[i] for i in range(0, PRINT_OPTS.edgeitems)]
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end = [self[i] for i in range(len(self) - PRINT_OPTS.edgeitems, len(self))]
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return torch.stack([get_summarized_data(x) for x in (start + end)])
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else:
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return torch.stack([get_summarized_data(x) for x in self])
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def _str_intern(inp, *, tensor_contents=None):
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if torch._C._functorch.is_functorch_wrapped_tensor(inp):
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return _functorch_wrapper_str_intern(inp, tensor_contents=tensor_contents)
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is_plain_tensor = type(inp) is torch.Tensor or type(inp) is torch.nn.Parameter
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if inp.is_nested:
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prefix = "nested_tensor("
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elif is_plain_tensor:
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prefix = "tensor("
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else:
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prefix = f"{type(inp).__name__}("
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indent = len(prefix)
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suffixes = []
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custom_contents_provided = tensor_contents is not None
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if custom_contents_provided:
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tensor_str = tensor_contents
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# This is used to extract the primal value and thus disable the forward AD
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# within this function.
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# TODO(albanD) This needs to be updated when more than one level is supported
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self, tangent = torch.autograd.forward_ad.unpack_dual(inp)
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# Note [Print tensor device]:
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# A general logic here is we only print device when it doesn't match
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# the device specified in default tensor type.
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# Currently torch.set_default_tensor_type() only supports CPU/CUDA, thus
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# torch._C._get_default_device() only returns either cpu or cuda.
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# In other cases, we don't have a way to set them as default yet,
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# and we should always print out device for them.
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if (
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self.device.type != torch._C._get_default_device()
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or (
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self.device.type == "cuda"
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and torch.cuda.current_device() != self.device.index
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)
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or (self.device.type == "mps")
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):
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suffixes.append("device='" + str(self.device) + "'")
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# Tensor printing performs tensor operations like slice, indexing, etc to make it in a
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# representable format. These operations on ipu/xla/lazy/mtia tensor results in compilations. Hence,
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# to avoid compilations, copying the tensor to cpu before printing.
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if self.device.type in ["xla", "lazy", "ipu", "mtia"]:
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self = self.to("cpu")
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# TODO: add an API to map real -> complex dtypes
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_default_complex_dtype = (
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torch.cdouble if torch.get_default_dtype() == torch.double else torch.cfloat
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)
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has_default_dtype = self.dtype in (
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torch.get_default_dtype(),
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_default_complex_dtype,
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torch.int64,
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torch.bool,
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)
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if self.is_sparse:
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suffixes.append("size=" + str(tuple(self.shape)))
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from torch._subclasses.fake_tensor import FakeTensor
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if not self.is_meta and not isinstance(self, FakeTensor):
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suffixes.append("nnz=" + str(self._nnz()))
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if not has_default_dtype:
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suffixes.append("dtype=" + str(self.dtype))
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if not custom_contents_provided:
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indices_prefix = "indices=tensor("
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indices = self._indices().detach()
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indices_str = _tensor_str(indices, indent + len(indices_prefix))
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if indices.numel() == 0:
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indices_str += ", size=" + str(tuple(indices.shape))
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values_prefix = "values=tensor("
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values = self._values().detach()
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values_str = _tensor_str(values, indent + len(values_prefix))
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if values.numel() == 0:
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values_str += ", size=" + str(tuple(values.shape))
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tensor_str = (
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indices_prefix
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+ indices_str
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+ "),\n"
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+ " " * indent
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+ values_prefix
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+ values_str
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+ ")"
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)
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elif self.layout in {
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torch.sparse_csr,
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torch.sparse_csc,
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torch.sparse_bsr,
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torch.sparse_bsc,
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}:
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suffixes.append("size=" + str(tuple(self.shape)))
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suffixes.append("nnz=" + str(self._nnz()))
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if not has_default_dtype:
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suffixes.append("dtype=" + str(self.dtype))
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if not custom_contents_provided:
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compressed_indices_method, plain_indices_method = {
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torch.sparse_csr: (torch.Tensor.crow_indices, torch.Tensor.col_indices),
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torch.sparse_csc: (torch.Tensor.ccol_indices, torch.Tensor.row_indices),
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torch.sparse_bsr: (torch.Tensor.crow_indices, torch.Tensor.col_indices),
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torch.sparse_bsc: (torch.Tensor.ccol_indices, torch.Tensor.row_indices),
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}[self.layout]
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if self.layout in {torch.sparse_csr, torch.sparse_bsr}:
|
|
cdimname, pdimname = "row", "column"
|
|
else:
|
|
cdimname, pdimname = "column", "row"
|
|
compressed_indices_prefix = f"c{cdimname[:3]}_indices=tensor("
|
|
compressed_indices = compressed_indices_method(self).detach()
|
|
compressed_indices_str = _tensor_str(
|
|
compressed_indices, indent + len(compressed_indices_prefix)
|
|
)
|
|
if compressed_indices.numel() == 0:
|
|
compressed_indices_str += ", size=" + str(
|
|
tuple(compressed_indices.shape)
|
|
)
|
|
plain_indices_prefix = f"{pdimname[:3]}_indices=tensor("
|
|
plain_indices = plain_indices_method(self).detach()
|
|
plain_indices_str = _tensor_str(
|
|
plain_indices, indent + len(plain_indices_prefix)
|
|
)
|
|
if plain_indices.numel() == 0:
|
|
plain_indices_str += ", size=" + str(tuple(plain_indices.shape))
|
|
values_prefix = "values=tensor("
|
|
values = self.values().detach()
|
|
values_str = _tensor_str(values, indent + len(values_prefix))
|
|
if values.numel() == 0:
|
|
values_str += ", size=" + str(tuple(values.shape))
|
|
tensor_str = (
|
|
compressed_indices_prefix
|
|
+ compressed_indices_str
|
|
+ "),\n"
|
|
+ " " * indent
|
|
+ plain_indices_prefix
|
|
+ plain_indices_str
|
|
+ "),\n"
|
|
+ " " * indent
|
|
+ values_prefix
|
|
+ values_str
|
|
+ ")"
|
|
)
|
|
elif self.is_quantized:
|
|
suffixes.append("size=" + str(tuple(self.shape)))
|
|
if not has_default_dtype:
|
|
suffixes.append("dtype=" + str(self.dtype))
|
|
suffixes.append("quantization_scheme=" + str(self.qscheme()))
|
|
if (
|
|
self.qscheme() == torch.per_tensor_affine
|
|
or self.qscheme() == torch.per_tensor_symmetric
|
|
):
|
|
suffixes.append("scale=" + str(self.q_scale()))
|
|
suffixes.append("zero_point=" + str(self.q_zero_point()))
|
|
elif (
|
|
self.qscheme() == torch.per_channel_affine
|
|
or self.qscheme() == torch.per_channel_symmetric
|
|
or self.qscheme() == torch.per_channel_affine_float_qparams
|
|
):
|
|
suffixes.append("scale=" + str(self.q_per_channel_scales()))
|
|
suffixes.append("zero_point=" + str(self.q_per_channel_zero_points()))
|
|
suffixes.append("axis=" + str(self.q_per_channel_axis()))
|
|
if not custom_contents_provided:
|
|
tensor_str = _tensor_str(self.dequantize(), indent)
|
|
elif self.is_nested:
|
|
if not custom_contents_provided:
|
|
|
|
def indented_str(s, indent):
|
|
return "\n".join(f" {line}" for line in s.split("\n"))
|
|
|
|
strs = ",\n".join(
|
|
indented_str(str(t), indent + 1)
|
|
for t in torch.ops.aten.unbind.int(self, 0)
|
|
)
|
|
tensor_str = f"[\n{strs}\n]"
|
|
elif torch._is_functional_tensor(self):
|
|
prefix = "_to_functional_tensor("
|
|
tensor_str = repr(torch._from_functional_tensor(self))
|
|
else:
|
|
# Circular import problem, so we import it here
|
|
from torch._subclasses.fake_tensor import FakeTensor
|
|
|
|
if self.is_meta or isinstance(self, FakeTensor):
|
|
suffixes.append("size=" + str(tuple(self.shape)))
|
|
if self.dtype != torch.get_default_dtype():
|
|
suffixes.append("dtype=" + str(self.dtype))
|
|
# TODO: This implies that ellipses is valid syntax for allocating
|
|
# a meta tensor or FakeTensor, which it could be, but it isn't right now
|
|
if not custom_contents_provided:
|
|
tensor_str = "..."
|
|
else:
|
|
if self.numel() == 0 and not self.is_sparse:
|
|
# Explicitly print the shape if it is not (0,), to match NumPy behavior
|
|
if self.dim() != 1:
|
|
suffixes.append("size=" + str(tuple(self.shape)))
|
|
|
|
# In an empty tensor, there are no elements to infer if the dtype
|
|
# should be int64, so it must be shown explicitly.
|
|
if self.dtype != torch.get_default_dtype():
|
|
suffixes.append("dtype=" + str(self.dtype))
|
|
if not custom_contents_provided:
|
|
tensor_str = "[]"
|
|
else:
|
|
if not PRINT_OPTS.edgeitems:
|
|
suffixes.append("size=" + str(tuple(self.shape)))
|
|
|
|
if not has_default_dtype:
|
|
suffixes.append("dtype=" + str(self.dtype))
|
|
|
|
if not custom_contents_provided:
|
|
if self.layout != torch.strided:
|
|
tensor_str = _tensor_str(self.to_dense(), indent)
|
|
else:
|
|
tensor_str = _tensor_str(self, indent)
|
|
|
|
if self.layout != torch.strided:
|
|
suffixes.append("layout=" + str(self.layout))
|
|
|
|
# Use inp here to get the original grad_fn and not the one generated by the forward grad
|
|
# unpacking.
|
|
if inp.grad_fn is not None:
|
|
name = type(inp.grad_fn).__name__
|
|
if name == "CppFunction":
|
|
name = inp.grad_fn.name().rsplit("::", 1)[-1]
|
|
suffixes.append(f"grad_fn=<{name}>")
|
|
elif inp.requires_grad:
|
|
suffixes.append("requires_grad=True")
|
|
|
|
if self.has_names():
|
|
suffixes.append(f"names={self.names}")
|
|
|
|
if tangent is not None:
|
|
suffixes.append(f"tangent={tangent}")
|
|
|
|
string_repr = _add_suffixes(
|
|
prefix + tensor_str, suffixes, indent, force_newline=self.is_sparse
|
|
)
|
|
|
|
# Check if this instance is flagged as a parameter and change the repr accordingly.
|
|
# Unfortunately, this function has to be aware of this detail.
|
|
# NB: This is currently skipped for plain tensor parameters to maintain BC. In the future,
|
|
# this should be done for those as well to produce a valid repr.
|
|
if isinstance(self, torch.nn.Parameter) and not is_plain_tensor:
|
|
string_repr = f"Parameter({string_repr})"
|
|
|
|
return string_repr
|
|
|
|
|
|
def _functorch_wrapper_str_intern(tensor, *, tensor_contents=None):
|
|
level = torch._C._functorch.maybe_get_level(tensor)
|
|
assert level != -1
|
|
|
|
if torch._C._functorch.is_functionaltensor(tensor):
|
|
# Since we're unwrapping the FunctionalTensorWrapper, we need to make sure
|
|
# that it's up to date first
|
|
torch._sync(tensor)
|
|
|
|
value = torch._C._functorch.get_unwrapped(tensor)
|
|
value_repr = repr(value)
|
|
|
|
indented_value_repr = textwrap.indent(value_repr, " " * 4)
|
|
if torch._C._functorch.is_batchedtensor(tensor):
|
|
bdim = torch._C._functorch.maybe_get_bdim(tensor)
|
|
assert bdim != -1
|
|
return (
|
|
f"BatchedTensor(lvl={level}, bdim={bdim}, value=\n"
|
|
f"{indented_value_repr}\n"
|
|
f")"
|
|
)
|
|
if torch._C._functorch.is_gradtrackingtensor(tensor):
|
|
return (
|
|
f"GradTrackingTensor(lvl={level}, value=\n" f"{indented_value_repr}\n" f")"
|
|
)
|
|
if torch._C._functorch.is_functionaltensor(tensor):
|
|
return f"FunctionalTensor(lvl={level}, value=\\\n{value_repr})"
|
|
|
|
raise ValueError("We don't know how to print this, please file us an issue")
|
|
|
|
|
|
def _str(self, *, tensor_contents=None):
|
|
with torch.no_grad(), torch.utils._python_dispatch._disable_current_modes():
|
|
guard = torch._C._DisableFuncTorch()
|
|
return _str_intern(self, tensor_contents=tensor_contents)
|