I was trying to have a look at
https://github.com/sagemath/sage/issues/38630 using %crun, but I get the
error below. Anybody knows what's going on? I found
https://stackoverflow.com/questions/32508296/gperftools-error-substr-outside-of-string-at-usr-local-bin-pprof-line-3618,
but cannot decipher the answer.
Martin
sage: %crun p=random_prime(2**500)
Using local file
/home/martin/sage/local/var/lib/sage/venv-python3.10/bin/python3.
Using local file /home/martin/tmp/tmp8s303_77/tmp_lq02l0j6.perf.
substr outside of string at /usr/bin/google-pprof line 3695.
Use of uninitialized value in string eq at /usr/bin/google-pprof line 3695.
substr outside of string at /usr/bin/google-pprof line 3697.
Use of uninitialized value in string eq at /usr/bin/google-pprof line 3697.
/home/martin/tmp/tmp8s303_77/tmp_lq02l0j6.perf: header size >= 2**16
---------------------------------------------------------------------------
CalledProcessError Traceback (most recent call last)
Cell In[2], line 1
----> 1 get_ipython().run_line_magic('crun', 'p=random_prime(2**500)')
File
~/sage/local/var/lib/sage/venv-python3.10/lib/python3.10/site-packages/IPython/core/interactiveshell.py:2456,
in InteractiveShell.run_line_magic(self, magic_name, line, _stack_depth)
2454 kwargs['local_ns'] = self.get_local_scope(stack_depth)
2455 with self.builtin_trap:
-> 2456 result = fn(*args, **kwargs)
2458 # The code below prevents the output from being displayed
2459 # when using magics with decorator @output_can_be_silenced
2460 # when the last Python token in the expression is a ';'.
2461 if getattr(fn, magic.MAGIC_OUTPUT_CAN_BE_SILENCED, False):
File ~/sage/src/sage/repl/ipython_extension.py:97, in SageMagics.crun(self,
s)
79 r"""
80 Profile C function calls
81
(...)
94 sage: shell.quit()
95 """
96 import sage.misc.gperftools
---> 97 sage.misc.gperftools.crun(s, evaluator=self.shell.ex)
File ~/sage/src/sage/misc/gperftools.py:375, in crun(s, evaluator)
373 finally:
374 prof.stop()
--> 375 prof.top()
File ~/sage/src/sage/misc/gperftools.py:298, in Profiler.top(self,
cumulative)
296 args += ['--cum']
297 args += ['--text', self._executable(), self.filename()]
--> 298 self._call_pprof(*args)
File ~/sage/src/sage/misc/gperftools.py:272, in Profiler._call_pprof(self,
*args, **kwds)
252 """
253 Run the pprof binary
254
(...)
269 ...
270 """
271 from subprocess import check_call
--> 272 check_call([self._pprof()] + list(args), **kwds)
File /usr/lib/python3.10/subprocess.py:369, in check_call(*popenargs,
**kwargs)
367 if cmd is None:
368 cmd = popenargs[0]
--> 369 raise CalledProcessError(retcode, cmd)
370 return 0
CalledProcessError: Command '['google-pprof', '--cum', '--text',
'/home/martin/sage/local/var/lib/sage/venv-python3.10/bin/python3',
'/home/martin/tmp/tmp8s303_77/tmp_lq02l0j6.perf']' returned non-zero exit
status 1.
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