#8410: Improve robustness of @parallel
---------------------------+------------------------------------------------
Reporter: boothby | Owner: tbd
Type: defect | Status: new
Priority: major | Milestone:
Component: performance | Keywords:
Author: | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
---------------------------+------------------------------------------------
Run the following:
{{{
@parallel(4)
def sleeper(x):
sleep(x)
for _ in sleeper([10]*100):
pass
}}}
and interrupt it with ctrl-c (or esc in the notebook). We get
{{{
Killing any remaining workers...
[Errno 3] No such process
---------------------------------------------------------------------------
KeyboardInterrupt Traceback (most recent call
last)
/home/boothby/<ipython console> in <module>()
/usr/local/sage/local/lib/python2.6/site-
packages/sage/parallel/use_fork.pyc in __call__(self, f, inputs)
98 signal.alarm(int(walltime() - oldest)+1)
99 try:
--> 100 pid = os.wait()[0]
101 signal.signal(signal.SIGALRM,
signal.SIG_IGN)
102 except RuntimeError:
/usr/local/sage/local/lib/python2.6/site-
packages/sage/interfaces/get_sigs.pyc in my_sigint(x, n)
7
8 def my_sigint(x, n):
----> 9 raise KeyboardInterrupt
10
11 def my_sigfpe(x, n):
KeyboardInterrupt:
}}}
and then, let's restart the computation:
{{{
sage: for _ in sleeper([10]*100):
print "hello"
pass
....:
15775
[Errno 39] Directory not empty:
'/home/boothby/.sage/temp/sage.math.washington.edu/15401/dir_0'
Killing any remaining workers...
}}}
All I can do here is restart Sage.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/8410>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
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