Dear all, Thanks a lot once more for the great software.
During my last attempt to build Sage on Cygwin (32), I mainly have only one problem left: using the multiprocessing module from python is problematic. I was using Cygwin 1.7.25 within a Windows XP virtual machine (VirtualBox 4.3). This is true both with Cygwin's shipped Python 2.7.x and the one I built for Sage. Here is a small snippet of code reproducing the problem: """ [Blah python stuff] >>> from multiprocessing import Pool >>> p = Pool(3) >>> p.map(anything suitable) ... ValueError: semaphore or lock released too many times """ This might be a problem with Python but I seem to remember succeeding in this test some time ago with the same version of Python. I tried Cygwin's GCC (4.7.3) and a custom built FSF GCC 4.8.2 without success. I also tried to replace Cygwin binaries with version 1.7.0 and a few others before 1.7.25 without apparent changes. So I'm a little lost now. Can anyone reporduce that? Any help would be appreciated! I have another quite unrelated question while I'm here: I recently had trouble because in Sage two DLLs ended up with the same name and wanted to be loaded at the same time, resulting in a "cannot reloacte blah.dll at the same address". Renaming one of the dll (C file and rebuilding) solved the problem. I assume this is a windows limitations, is that right? Thanks in advance for your help, Best, -- Jean-Pierre Flori -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
