[GitHub] [tvm] apivovarov opened a new issue #7546: [torch] slice with Var Length fails

[GitBox <gi...@apache.org>]

apivovarov opened a new issue #7546:
URL: https://github.com/apache/tvm/issues/7546


   `torch.slice` works fine for fixed ranges (e.g. a[0:2]). If instead of particular number I use Var for Length (just for Length) (e.g. a[0, L] then `from_pytorch` fails.
   
   The code to reproduce the issue:
   ```
   import torch
   import tvm
   from tvm import relay
   import numpy as np
           
   class Net(torch.nn.Module):
       def __init__(self):
           super(Net, self).__init__()
       def forward(self, values, length):
           return values[0:length]
   
   
   net = Net()
   a = torch.tensor([[1, 2, 3], [4, 5, 6], [7, 8, 9]])
   len = torch.tensor(2)
   net(a, len)
   
   traced_net = torch.jit.trace(net, (a, len))
   
   ctx = tvm.cpu(0)
   target = 'llvm'
   
   shape_list = [("input0", [3,3]),("input1", []),]
   mod, params = relay.frontend.from_pytorch(traced_net, shape_list)
   ```
   
   Error:
   ```
   >>> mod, params = relay.frontend.from_pytorch(traced_net, shape_list)
   Traceback (most recent call last):
     File "<stdin>", line 1, in <module>
     File "/Users/pivovaa/workspace/tvm/python/tvm/relay/frontend/pytorch.py", line 3180, in from_pytorch
       ret = converter.convert_operators(_get_operator_nodes(graph.nodes()), outputs, ret_name)[0]
     File "/Users/pivovaa/workspace/tvm/python/tvm/relay/frontend/pytorch.py", line 2601, in convert_operators
       relay_out = relay_op(
     File "/Users/pivovaa/workspace/tvm/python/tvm/relay/frontend/pytorch.py", line 403, in slice
       if target_begin == 0 and target_end >= index_size_limit and stride == 1:
     File "/Users/pivovaa/workspace/tvm/python/tvm/relay/expr.py", line 84, in __ge__
       raise TypeError('convert "%s" with `const` first' % str(other))
   TypeError: convert "9223372036854775807" with `const` first
   ```
   @masahi 


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[GitHub] [tvm] comaniac closed issue #7546: [torch] slice with Var Length fails

[GitBox <gi...@apache.org>]

comaniac closed issue #7546:
URL: https://github.com/apache/tvm/issues/7546


   


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