RuntimeError Traceback (most recent call last)
in
----> 1 learn.fit_one_cycle(4)
~/anaconda3/envs/step/lib/python3.6/site-packages/fastai/train.py in fit_one_cycle(learn, cyc_len, max_lr, moms, div_factor, pct_start, wd, callbacks, **kwargs)
20 callbacks.append(OneCycleScheduler(learn, max_lr, moms=moms, div_factor=div_factor,
21 pct_start=pct_start, **kwargs))
---> 22 learn.fit(cyc_len, max_lr, wd=wd, callbacks=callbacks)
23
24 def lr_find(learn:Learner, start_lr:Floats=1e-7, end_lr:Floats=10, num_it:int=100, stop_div:bool=True, **kwargs:Any):
~/anaconda3/envs/step/lib/python3.6/site-packages/fastai/basic_train.py in fit(self, epochs, lr, wd, callbacks)
170 callbacks = [cb(self) for cb in self.callback_fns] + listify(callbacks)
171 fit(epochs, self.model, self.loss_func, opt=self.opt, data=self.data, metrics=self.metrics,
--> 172 callbacks=self.callbacks+callbacks)
173
174 def create_opt(self, lr:Floats, wd:Floats=0.)->None:
~/anaconda3/envs/step/lib/python3.6/site-packages/fastai/basic_train.py in fit(epochs, model, loss_func, opt, data, callbacks, metrics)
92 except Exception as e:
93 exception = e
---> 94 raise e
95 finally: cb_handler.on_train_end(exception)
96
~/anaconda3/envs/step/lib/python3.6/site-packages/fastai/basic_train.py in fit(epochs, model, loss_func, opt, data, callbacks, metrics)
80 cb_handler.on_epoch_begin()
81
---> 82 for xb,yb in progress_bar(data.train_dl, parent=pbar):
83 xb, yb = cb_handler.on_batch_begin(xb, yb)
84 loss = loss_batch(model, xb, yb, loss_func, opt, cb_handler)
~/anaconda3/envs/step/lib/python3.6/site-packages/fastprogress/fastprogress.py in iter(self)
63 self.update(0)
64 try:
---> 65 for i,o in enumerate(self._gen):
66 yield o
67 if self.auto_update: self.update(i+1)
~/anaconda3/envs/step/lib/python3.6/site-packages/fastai/basic_data.py in iter(self)
68 def iter(self):
69 "Process and returns items from DataLoader
."
---> 70 for b in self.dl: yield self.proc_batch(b)
71
72 @classmethod
~/anaconda3/envs/step/lib/python3.6/site-packages/torch/utils/data/dataloader.py in next(self)
629 while True:
630 assert (not self.shutdown and self.batches_outstanding > 0)
--> 631 idx, batch = self._get_batch()
632 self.batches_outstanding -= 1
633 if idx != self.rcvd_idx:
~/anaconda3/envs/step/lib/python3.6/site-packages/torch/utils/data/dataloader.py in _get_batch(self)
608 # need to call .task_done()
because we don't use .join()
.
609 else:
--> 610 return self.data_queue.get()
611
612 def next(self):
~/anaconda3/envs/step/lib/python3.6/multiprocessing/queues.py in get(self, block, timeout)
92 if block and timeout is None:
93 with self._rlock:
---> 94 res = self._recv_bytes()
95 self._sem.release()
96 else:
~/anaconda3/envs/step/lib/python3.6/multiprocessing/connection.py in recv_bytes(self, maxlength)
214 if maxlength is not None and maxlength < 0:
215 raise ValueError("negative maxlength")
--> 216 buf = self._recv_bytes(maxlength)
217 if buf is None:
218 self._bad_message_length()
~/anaconda3/envs/step/lib/python3.6/multiprocessing/connection.py in _recv_bytes(self, maxsize)
405
406 def _recv_bytes(self, maxsize=None):
--> 407 buf = self._recv(4)
408 size, = struct.unpack("!i", buf.getvalue())
409 if maxsize is not None and size > maxsize:
~/anaconda3/envs/step/lib/python3.6/multiprocessing/connection.py in _recv(self, size, read)
377 remaining = size
378 while remaining > 0:
--> 379 chunk = read(handle, remaining)
380 n = len(chunk)
381 if n == 0:
~/anaconda3/envs/step/lib/python3.6/site-packages/torch/utils/data/dataloader.py in handler(signum, frame)
272 # This following call uses waitid
with WNOHANG from C side. Therefore,
273 # Python can still get and update the process status successfully.
--> 274 _error_if_any_worker_fails()
275 if previous_handler is not None:
276 previous_handler(signum, frame)
RuntimeError: DataLoader worker (pid 8362) is killed by signal: Illegal instruction.