May 2010 - Boost - lists.preview.boost.org

[GIL] How do you use GIL?
by Lubomir Bourdev 14 May '10

14 May '10

If you are using GIL in your project and don’t mind being quoted, could you please email me your name, your project/company or university and any optional comments? We will be giving a tutorial for Boost.GIL at the CVPR 2010 conference in San Francisco on June 13. CVPR is an international conference in computer vision attended by many people from both industry and academia. This is an opportunity to promote the boost libraries in general. Thanks, Lubomir

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Fwd: [MPI] Test Processor Counts
by Belcourt, Kenneth 14 May '10

14 May '10

Sent to the users list by mistake. Begin forwarded message: > From: "Belcourt, Kenneth" <kbelco(a)sandia.gov> > Date: May 14, 2010 11:03:23 AM MDT > To: "boost-users(a)lists.boost.org" <boost-users(a)lists.boost.org> > Subject: [MPI] Test Processor Counts > > Hi, > > While running the trunk tests, we've found that occasionally the > system load average jumps up over 100 and occasionally hits 200. As > you can imagine for 8 to 32 core systems, this adversely impacts users > on those systems. > > The issue is that I'm running the trunk tests in parallel, usually -j8 > to -j32 and when the MPI tests run, we run into the high load > problem. Some of the MPI tests run up to 17 processors so the > combination of parallel testing and large processor count tests cause > this issue. Now the high load average may last for only 5 to 15 > minutes or so but this is enough to trigger a sysadmin question asking > what I'm up. > > I'm looking for a solution that wouldn't require significantly > reducing testing throughput. Possible solutions might include > serializing the execution of the MPI tests using something like the > link-semaphore in Boost.Build, reducing the processor counts of the > MPI tests, only running the larger tests on unchecked or unknown MPI > implementations, setting up an MPI machine file to run the MPI tests > off of the local system that built the executable, etc... > > Any other ideas on how to manage this? > > Thanks. > > -- Noel >

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[regex] Last VC6 version
by Roger Orr 13 May '10

13 May '10

The page http://www.boost.org/doc/libs/1_43_0/libs/regex/doc/html/boost_regex/install .html still states that VC6 can be used to build regex, but this no longer appears to be actually the case. Does anyone know which was the last version of boost regex to support VC6? Regards, Roger.

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Patch to value_initialized
by Christopher Jefferson 13 May '10

13 May '10

I just wanted to make people away of a suggested patch to value_initialized, explicitly adding the default constructor, copy constructor and operator=, given in https://svn.boost.org/trac/boost/ticket/4213 . The default constructor is necessary for clang and comeau (in strict mode) to allow const value_initialized values without an explicit value. I believe this is correct behaviour, but other compilers are more lack. I believe this patch is small and should work fine, but I know that this has been a very sensitive bit of code in the past, prone to kicking up minor compiler problems. My preferred option would be to try submitting this patch to trunk and see if any tester kicks up a fuss. If any do, then I am happy to introduce some macros.

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trac database locked
by Kim Barrett 13 May '10

13 May '10

I'm trying to submit a patch via trac and get the error "OperationalError: database is locked"

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[interprocess] flat_set/flat_map should add front(), back(), operator[], pop_back()
by Thorsten Ottosen 13 May '10

13 May '10

Hi Ion, When using e.g. a flat_set as a priority queue, it is annoying not to have back() and pop_back() available. As for operator[](), then of couse cont.begin()[n] works, but this is somewhat less pretty compared to just cont[n]. Therefore I would really like to see all the above functions added to the interface. kind regards Thorsten

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[LA] vector_traits for setters
by Daniel Pfeifer 13 May '10

13 May '10

Hi Emil and others, Qt 4.6 brought support for some vector and matrix types. While it is easy to define matrix_traits for QGenericMatrix and QMatrix4x4, i am struggling with the vector_traits for QVector2D, QVector3D and QVector4D. The problem is that Qt's vector types have setters and no non-const-ref getters. Is there a plan for (Boost).LA to support types with setters? cheers, Daniel Documentation for Qt's vector and matrix types can be found here: http://doc.qt.nokia.com/4.6/qmatrix4x4-members.html http://doc.qt.nokia.com/4.6/qgenericmatrix-members.html http://doc.qt.nokia.com/4.6/qvector2d-members.html http://doc.qt.nokia.com/4.6/qvector3d-members.html http://doc.qt.nokia.com/4.6/qvector4d-members.html

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[exception] warnings from BOOST_THROW_EXCEPTION
by Steven Watanabe 13 May '10

13 May '10

AMDG The attached patch fixes warnings like ..\..\../boost/property_tree/string_path.hpp:216: error: control reaches end of non-void function Okay to commit? In Christ, Steven Watanabe

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[svn sandbox access] svn sandbox access requested via correct method but no reply
by Dan Walters 12 May '10

12 May '10

Hi all, I emailed boost-owner(a)lists.boost.org on 27 April 2010 23:32 requesting sandbox svn access but am yet to recv a reply. After asking in #boost, DHulme recommended that I post here mentioning this. Thanks for your time, Dan

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[trac] New components
by Daniel James 12 May '10

12 May '10

Hi, Please can someone add functional/foward and functional/factory to the components on trac? They should be owned by t_schwinger. thanks, Daniel

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