cygwin: a cachefunc.py doctest hangs seemingly forever

[williamstein]

On Cygwin, the following test hangs:

            sage: @cached_function
            ... def oddprime_factors(n):
            ...     l = [p for p,e in factor(n) if p != 2]
            ...     return len(l)
            sage: oddprime_factors.precompute(range(1,100), 4)

The above is very fast on any other platform.

This results in a doctest file failure:

sage -t  "devel/sage/sage/misc/cachefunc.py"                
*** *** Error: TIMED OUT! PROCESS KILLED! *** ***
*** *** Error: TIMED OUT! *** ***
 [361.6 s]

CC: @jpflori @dimpase @kcrisman

Component: porting: Cygwin

Reviewer: Jean-Pierre Flori

Issue created by migration from https://trac.sagemath.org/ticket/9169

[kcrisman]

comment:1

FWIW, this file is now cachefunc.pyx.

[kcrisman]

comment:2

This same test still fails, though for me it is because of forking errors and an inability to start Singular at times (presumably for that reason).

[jpflori]

comment:4

On my install (64bits Windows 7 + sage 5.6.rc0) the test passes.

[kcrisman]

comment:5

That's good to hear. I am frustrated by this forking business. A complete rebase just shifts the error to a different random file that won't be remapped. So I can never tell whether things are really a problem or not.

[dimpase]

comment:6

Replying to @kcrisman:

That's good to hear. I am frustrated by this forking business. A complete rebase just shifts the error to a different random file that won't be remapped. So I can never tell whether things are really a problem or not.

Are you working on a 32-bit Windows? I've given up on attempting to use Cygwin on 32-bit systems.

Anyhow, this test works for me too. Let's close this one.

[kcrisman]

comment:7

I'd feel best if we were able to try on 32-bit XP... though I recognize this may be impossible unless my box stops acting up.

[jpflori]

comment:8

When the status on my 64 bits Windows 7 looks good enough (which looks close), I'll dig up an old 32 bits install and give it a try.

[jpflori]

comment:9

This is ok on 32 bits Windows 7, so I'll close it.

[jdemeyer]

Reviewer: Jean-Pierre Flori