#11461: make @parallel work with class/instance methods
---------------------------+------------------------------------------------
Reporter: niles | Owner: tbd
Type: defect | Status: new
Priority: major | Milestone: sage-4.7.1
Component: performance | Keywords: parallel decorator
Work_issues: | Upstream: N/A
Reviewer: | Author:
Merged: | Dependencies:
---------------------------+------------------------------------------------
Comment(by niles):
I wish I could tell buildbot not to apply [attachment:parallel.patch] -- I
put it here only to share what I've learned about how `@parallel` works:
The object that gets passed to `Parallel` is no longer a method, but only
a plain function. Here's how I'm testing this:
First, the following goes in a separate file
{{{
@parallel
def func(n):
sleep(.2)
return prime_pi(n)
class PTest(SageObject):
attr = 'red'
def meth0(self,n):
return n
@parallel
def meth1(self,n):
"long and complicated class method"
sleep(.5)
return [prime_pi(n),self.attr]
N = PTest()
M = [1000,2000,3000,4000,5000]
L = [(N,x) for x in [1000,2000,3000,4000,5000]]
}}}
Then I apply the patch and do this:
{{{
sage: N.meth1(100)
args: (<class '__main__.PTest'>, 100)
branch 2.5.1
...
NotImplementedError: this branch not finished
sage: func(100)
args: (100,)
branch 2.5.1
...
NotImplementedError: this branch not finished
}}}
So the function and method are being treated the same by `Parallel`. None
of the ideas for detecting the difference: `.__self__`, `ismethod`, or
`isfunction` seem to work. So I guess this means something earlier in the
application of `@parallel` needs to be fixed.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11461#comment:1>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
--
You received this message because you are subscribed to the Google Groups
"sage-trac" group.
To post to this group, send email to [email protected].
To unsubscribe from this group, send email to
[email protected].
For more options, visit this group at
http://groups.google.com/group/sage-trac?hl=en.
