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Modify an asio echo server so that it does not send message back to client
by Nicholas Yue 11 Jun '15

11 Jun '15

Hi, I am writing a simple server that is listening to binary data bucket being sent by a client. I am basing the prototype server on the following: http://www.boost.org/doc/libs/1_55_0/doc/html/boost_asio/example/cpp03/echo… I am wonder what is the correct way to modify the example so that it does not echo the result back to the client. The amount of binary data sent are substantial, more importantly, the client has no way to handle the incoming data on the socket. Cheers -- Nicholas Yue Graphics - Arnold, Alembic, RenderMan, OpenGL, HDF5 Custom Dev - C++ porting, OSX, Linux, Windows http://au.linkedin.com/in/nicholasyue https://vimeo.com/channels/naiadtools

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Re: [Boost-users] Boost-users Digest, Vol 4163, Issue 2
by Cook, Rich 10 Jun '15

10 Jun '15

I made a mistake. I used mpicxx in the below commands. If I use mpiCC, it gives the exact same output. > Date: Wed, 10 Jun 2015 18:38:26 +0000 > From: "Cook, Rich" <cook47(a)llnl.gov> > To: "boost-users(a)lists.boost.org" <boost-users(a)lists.boost.org> > Subject: Re: [Boost-users] "Re: Cannot build boost with MPI using > Intel openMPI wrapper" > Message-ID: <856FE4B0-86E0-4E87-90AE-65A0C4653D36(a)llnl.gov> > Content-Type: text/plain; charset="utf-8" > > Hi, here is the output of those commands, modified to reflect the actual tool I told boost to use, which is mpiCC, not mpicxx. What should I do with this output, and why does boost not accept it? Thanks! > > rcook@rzgpu2 (~ ): /usr/local/tools/openmpi-intel-debug-1.8.4/bin/mpicxx --showme:compile > -I/usr/local/tools/openmpi-intel-debug-1.8.4/include/openmpi/opal/mca/hwloc/hwloc191/hwloc/include -I/usr/local/tools/openmpi-intel-debug-1.8.4/include/openmpi/opal/mca/event/libevent2021/libevent -I/usr/local/tools/openmpi-intel-debug-1.8.4/include/openmpi/opal/mca/event/libevent2021/libevent/include -I/usr/local/tools/openmpi-intel-debug-1.8.4/include -I/usr/local/tools/openmpi-intel-debug-1.8.4/include/openmpi -pthread > > rcook@rzgpu2 (~ ): /usr/local/tools/openmpi-intel-debug-1.8.4/bin/mpicxx --showme:link > -pthread -Wl,-rpath -Wl,/usr/local/tools/openmpi-intel-debug-1.8.4/lib -Wl,--enable-new-dtags -L/usr/local/tools/openmpi-intel-debug-1.8.4/lib -lmpi > > > > Subject: Re: [Boost-users] Cannot build boost with MPI using Intel openMPI wrapper > From: Alain Miniussi (alain.miniussi_at_[hidden]) > Date: 2015-06-10 10:07:41 > > * Next message: Hadidi, Lars: "[Boost-users] Boost Random Numbers: Normal Distribution"<http://lists.boost.org/boost-users/2015/06/84409.php> > * Previous message: Boris Sch??ling: "Re: [Boost-users] Cannot build boost with MPI using Intel openMPI wrapper"<http://lists.boost.org/boost-users/2015/06/84407.php> > * In reply to: Boris Sch??ling: "Re: [Boost-users] Cannot build boost with MPI using Intel openMPI wrapper"<http://lists.boost.org/boost-users/2015/06/84407.php> > > ________________________________ > > What is the result of: > $/usr/local/tools/openmpi-intel-debug-1.8.4/bin/mpicxx --showme:compile > $/usr/local/tools/openmpi-intel-debug-1.8.4/bin/mpicxx --showme:link > ? > > > On 10/06/2015 11:08, Boris Sch?ling wrote: >> On Wed, 10 Jun 2015 02:37:26 +0200, Cook, Rich <cook47_at_[hidden]> wrote: >> >>> Hello, I'm seeing this in my build output. I'm hoping someone can >>> help me find out what the actual problem is. Thanks for any assistance. >>> >>> ===============MPI Auto-configuration=============== >>> MPI auto-detection failed: unknown wrapper compiler >>> /usr/local/tools/openmpi-intel-debug-1.8.4/bin/mpiCC >>> Please report this error to the Boost mailing list: http://www.boost.org<http://www.boost.org/> >>> You will need to manually configure MPI support. >>> MPI launcher: mpirun -np >>> ==================================================== >>> -- ✐Richard Cook ✇ Lawrence Livermore National Laboratory Bldg-453 Rm-4024, Mail Stop L-557 7000 East Avenue, Livermore, CA, 94550, USA ☎ (office) (925) 423-9605 ☎ (fax) (925) 423-6961 --- Information Management & Graphics Grp., Services & Development Div., Integrated Computing & Communications Dept. (opinions expressed herein are mine and not those of LLNL)

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Re: [Boost-users] "Re: Cannot build boost with MPI using Intel openMPI wrapper"
by Cook, Rich 10 Jun '15

10 Jun '15

Hi, here is the output of those commands, modified to reflect the actual tool I told boost to use, which is mpiCC, not mpicxx. What should I do with this output, and why does boost not accept it? Thanks! rcook@rzgpu2 (~ ): /usr/local/tools/openmpi-intel-debug-1.8.4/bin/mpicxx --showme:compile -I/usr/local/tools/openmpi-intel-debug-1.8.4/include/openmpi/opal/mca/hwloc/hwloc191/hwloc/include -I/usr/local/tools/openmpi-intel-debug-1.8.4/include/openmpi/opal/mca/event/libevent2021/libevent -I/usr/local/tools/openmpi-intel-debug-1.8.4/include/openmpi/opal/mca/event/libevent2021/libevent/include -I/usr/local/tools/openmpi-intel-debug-1.8.4/include -I/usr/local/tools/openmpi-intel-debug-1.8.4/include/openmpi -pthread rcook@rzgpu2 (~ ): /usr/local/tools/openmpi-intel-debug-1.8.4/bin/mpicxx --showme:link -pthread -Wl,-rpath -Wl,/usr/local/tools/openmpi-intel-debug-1.8.4/lib -Wl,--enable-new-dtags -L/usr/local/tools/openmpi-intel-debug-1.8.4/lib -lmpi Subject: Re: [Boost-users] Cannot build boost with MPI using Intel openMPI wrapper From: Alain Miniussi (alain.miniussi_at_[hidden]) Date: 2015-06-10 10:07:41 * Next message: Hadidi, Lars: "[Boost-users] Boost Random Numbers: Normal Distribution"<http://lists.boost.org/boost-users/2015/06/84409.php> * Previous message: Boris SchÃ¤ling: "Re: [Boost-users] Cannot build boost with MPI using Intel openMPI wrapper"<http://lists.boost.org/boost-users/2015/06/84407.php> * In reply to: Boris SchÃ¤ling: "Re: [Boost-users] Cannot build boost with MPI using Intel openMPI wrapper"<http://lists.boost.org/boost-users/2015/06/84407.php> ________________________________ What is the result of: $/usr/local/tools/openmpi-intel-debug-1.8.4/bin/mpicxx --showme:compile $/usr/local/tools/openmpi-intel-debug-1.8.4/bin/mpicxx --showme:link ? On 10/06/2015 11:08, Boris Schäling wrote: > On Wed, 10 Jun 2015 02:37:26 +0200, Cook, Rich <cook47_at_[hidden]> wrote: > >> Hello, I'm seeing this in my build output. I'm hoping someone can >> help me find out what the actual problem is. Thanks for any assistance. >> >> ===============MPI Auto-configuration=============== >> MPI auto-detection failed: unknown wrapper compiler >> /usr/local/tools/openmpi-intel-debug-1.8.4/bin/mpiCC >> Please report this error to the Boost mailing list: http://www.boost.org<http://www.boost.org/> >> You will need to manually configure MPI support. >> MPI launcher: mpirun -np >> ==================================================== >> >> >> Here are the commands that generated it: >> >> + mkdir -p //usr/local/tools/boost-intel-1.57.0 >> + mkdir -p //usr/local/bin >> + pushd boost_1_57_0 >> /tmp/dpkg-mkdeb.1Tdcc4kqMi/src/boost_1_57_0 >> /tmp/dpkg-mkdeb.1Tdcc4kqMi/src >> + ./bootstrap.sh --prefix=/usr/local/tools/boost-intel-1.57.0 >> + echo 'using mpi : >> /usr/local/tools/openmpi-intel-debug-1.8.4/bin/mpiCC ;' >> >> tools/build/src/user-config.jam >> >> + ./b2 -j20 --debug-configuration install > > It's a while ago that I was using Boost.MPI. But if auto-detection > fails, you could pass MPI-related options explicitly. There is this > remark in the MPI Jamfile: > > # If your MPI implementation does not have a wrapper compiler, or the MPI > # auto-detection code does not work with your MPI's wrapper compiler, > # you can pass MPI-related options explicitly via the second parameter > to the > # mpi module: > # > # using mpi : : <find-shared-library>lammpio > <find-shared-library>lammpi++ > # <find-shared-library>mpi <find-shared-library>lam > # <find-shared-library>dl ; > > HTH, > Boris > >> [...] > > _______________________________________________ > Boost-users mailing list > Boost-users_at_[hidden] > http://lists.boost.org/mailman/listinfo.cgi/boost-users -- --- Alain -- ✐Richard Cook ✇ Lawrence Livermore National Laboratory Bldg-453 Rm-4024, Mail Stop L-557 7000 East Avenue, Livermore, CA, 94550, USA ☎ (office) (925) 423-9605 ☎ (fax) (925) 423-6961 --- Information Management & Graphics Grp., Services & Development Div., Integrated Computing & Communications Dept. (opinions expressed herein are mine and not those of LLNL)

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Cannot build boost with MPI using Intel openMPI wrapper
by Cook, Rich 10 Jun '15

10 Jun '15

Hello, I'm seeing this in my build output. I'm hoping someone can help me find out what the actual problem is. Thanks for any assistance. ===============MPI Auto-configuration=============== MPI auto-detection failed: unknown wrapper compiler /usr/local/tools/openmpi-intel-debug-1.8.4/bin/mpiCC Please report this error to the Boost mailing list: http://www.boost.org You will need to manually configure MPI support. MPI launcher: mpirun -np ==================================================== Here are the commands that generated it: + mkdir -p //usr/local/tools/boost-intel-1.57.0 + mkdir -p //usr/local/bin + pushd boost_1_57_0 /tmp/dpkg-mkdeb.1Tdcc4kqMi/src/boost_1_57_0 /tmp/dpkg-mkdeb.1Tdcc4kqMi/src + ./bootstrap.sh --prefix=/usr/local/tools/boost-intel-1.57.0 + echo 'using mpi : /usr/local/tools/openmpi-intel-debug-1.8.4/bin/mpiCC ;' >> tools/build/src/user-config.jam + ./b2 -j20 --debug-configuration install # ====================================================================== And here is the full output of that last b2 command: notice: found boost-build.jam at /tmp/dpkg-mkdeb.1Tdcc4kqMi/src/boost_1_57_0/boost-build.jam notice: loading Boost.Build from /tmp/dpkg-mkdeb.1Tdcc4kqMi/src/boost_1_57_0/tools/build/src notice: Searching '/etc' '/g/g0/rcook' '/tmp/dpkg-mkdeb.1Tdcc4kqMi/src/boost_1_57_0/tools/build/src' '/usr/share/boost-build' '/tmp/dpkg-mkdeb.1Tdcc4kqMi/src/boost_1_57_0/tools/build/src/kernel' '/tmp/dpkg-mkdeb.1Tdcc4kqMi/src/boost_1_57_0/tools/build/src/util' '/tmp/dpkg-mkdeb.1Tdcc4kqMi/src/boost_1_57_0/tools/build/src/build' '/tmp/dpkg-mkdeb.1Tdcc4kqMi/src/boost_1_57_0/tools/build/src/tools' '/tmp/dpkg-mkdeb.1Tdcc4kqMi/src/boost_1_57_0/tools/build/src/contrib' '/tmp/dpkg-mkdeb.1Tdcc4kqMi/src/boost_1_57_0/tools/build/src/.' for site-config configuration file 'site-config.jam'. notice: Configuration file 'site-config.jam' not found in '/etc' '/g/g0/rcook' '/tmp/dpkg-mkdeb.1Tdcc4kqMi/src/boost_1_57_0/tools/build/src' '/usr/share/boost-build' '/tmp/dpkg-mkdeb.1Tdcc4kqMi/src/boost_1_57_0/tools/build/src/kernel' '/tmp/dpkg-mkdeb.1Tdcc4kqMi/src/boost_1_57_0/tools/build/src/util' '/tmp/dpkg-mkdeb.1Tdcc4kqMi/src/boost_1_57_0/tools/build/src/build' '/tmp/dpkg-mkdeb.1Tdcc4kqMi/src/boost_1_57_0/tools/build/src/tools' '/tmp/dpkg-mkdeb.1Tdcc4kqMi/src/boost_1_57_0/tools/build/src/contrib' '/tmp/dpkg-mkdeb.1Tdcc4kqMi/src/boost_1_57_0/tools/build/src/.'. notice: Searching '/g/g0/rcook' '/tmp/dpkg-mkdeb.1Tdcc4kqMi/src/boost_1_57_0/tools/build/src' '/usr/share/boost-build' '/tmp/dpkg-mkdeb.1Tdcc4kqMi/src/boost_1_57_0/tools/build/src/kernel' '/tmp/dpkg-mkdeb.1Tdcc4kqMi/src/boost_1_57_0/tools/build/src/util' '/tmp/dpkg-mkdeb.1Tdcc4kqMi/src/boost_1_57_0/tools/build/src/build' '/tmp/dpkg-mkdeb.1Tdcc4kqMi/src/boost_1_57_0/tools/build/src/tools' '/tmp/dpkg-mkdeb.1Tdcc4kqMi/src/boost_1_57_0/tools/build/src/contrib' '/tmp/dpkg-mkdeb.1Tdcc4kqMi/src/boost_1_57_0/tools/build/src/.' for user-config configuration file 'user-config.jam'. notice: Loading user-config configuration file 'user-config.jam' from '/tmp/dpkg-mkdeb.1Tdcc4kqMi/src/boost_1_57_0/tools/build/src'. ===============MPI Auto-configuration=============== MPI auto-detection failed: unknown wrapper compiler /usr/local/tools/openmpi-intel-debug-1.8.4/bin/mpiCC Please report this error to the Boost mailing list: http://www.boost.org You will need to manually configure MPI support. MPI launcher: mpirun -np ==================================================== -- ✐Richard Cook ✇ Lawrence Livermore National Laboratory Bldg-453 Rm-4024, Mail Stop L-557 7000 East Avenue, Livermore, CA, 94550, USA ☎ (office) (925) 423-9605 ☎ (fax) (925) 423-6961 --- Information Management & Graphics Grp., Services & Development Div., Integrated Computing & Communications Dept. (opinions expressed herein are mine and not those of LLNL)

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eval_if fails - problem for C++ guru
by Robert Ramey 07 Jun '15

07 Jun '15

I've been having a very difficult time with a problem illustrated by the following program: It looks like the eval_if in line 51 isn't working correctly. That is, the metafuction get_promotion_policy is being invoked when both types are not safe types. I've been working on this for two days and can't see what's going on. Any help from a TMP genious would be much appreciated. #include <type_traits> #include <boost/mpl/and.hpp> #include <boost/mpl/or.hpp> #include <boost/mpl/if.hpp> #include <boost/mpl/eval_if.hpp> #include <boost/mpl/identity.hpp> struct safe_tag {}; template<class T, class P = void> struct safe : public safe_tag { T m_t; typedef P PromotionPolicy; }; template<class T> struct is_safe : public //std::is_arithmetic<T> std::is_base_of<safe_tag, T> {}; template<class T, class U> struct common_policies { static_assert( boost::mpl::or_< is_safe<T>, is_safe<U> >::value, "at least one type must be a safe type" ); template<typename Z> struct get_promotion_policy { static_assert( is_safe<Z>::value, "only safe types have promotion policies" ); typedef typename Z::PromotionPolicy type; }; // if both types are safe, the policies have to be the same! static_assert( boost::mpl::eval_if< boost::mpl::and_< is_safe<T>, is_safe<U> >, typename std::is_same< typename get_promotion_policy<T>::type, typename get_promotion_policy<U>::type >::type, boost::mpl::identity<boost::mpl::true_> >::type::value, "if both types are safe, the policies have to be the same!" ); // now we've verified that there is no conflict between policies // return the one from the first safe type typedef typename boost::mpl::if_< is_safe<T>, T, typename boost::mpl::if_< is_safe<U>, U, // boost::mpl::void_ >::type >::type safe_type; typedef typename get_promotion_policy<safe_type>::type promotion_policy; }; common_policies<int, safe<int> > t; int main(){ return 0; }

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boost::tuple in std::map
by Uthpal Urubail 06 Jun '15

06 Jun '15

Experts, I am using boost::tuple as key in std::map. I would like to write my own comparison method (considering tolerance in comparison) The default comparison defined in tuple_comparison.hpp is of no use to me. Any help in this is highly appreciated. Regards, UJ

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[Log] Failed to compile applications with Boost.Log
by lin li 05 Jun '15

05 Jun '15

Hi, guys. I am trying to to compile the tutorial code from Boost.Log with the trivial logger. But it fails with the error: "‘boost::log::v2s_mt_posix::trivial::boost’ has not been declared" OS: OracleLinux 6.6 G++: 4.4.7 Boost: 1.57 I have googled a lot about it, but it seems that all answers are related to some linking error, but this one is different. It seems that it does not even find the declaration in the first place. Anyone has similar experience?

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Re: [Boost-users] Serialization] Non-default constructor and static data members
by Mccall, Kurt E. (JSC-EG411) 04 Jun '15

04 Jun '15

Robert, thanks for the reply -- I won't attempt to serialize the static const members. Also, it looks like if the members is static but not const and defined outside of the class, the linker finds it just fine, when it is referenced in save_construct_data(). Kurt > >I'm not so sure about that. There no need to serialize the static const >values since they are fixed and initialized before the first instance is >constructed. > >It has always been that static variables had to be explicitly >initialized outside the class. As in > >const int A::var1 = 1; // no longer necessary >const int A::var2 = 2; > >But I guess C++11 changed that. > >Robert Ramey >_______________________________________________ >Boost-users mailing list >Boost-users(a)lists.boost.org >http://lists.boost.org/mailman/listinfo.cgi/boost-users

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[Serialization] Non-default constructor and static data members
by Mccall, Kurt E. (JSC-EG411) 04 Jun '15

04 Jun '15

I'm trying to serialize a class with a non-default constructor and static const data members, so I have to override boost::serialization::save_construct_data() and load_construct_data(). I am getting a linking error:the static members referred to in save_construct_data() cannot be found ("undefined reference"). #include <boost/archive/tmpdir.hpp> #include <boost/archive/xml_iarchive.hpp> #include <boost/archive/xml_oarchive.hpp> // forward declarations class A; namespace boost { namespace serialization { template<class Archive> inline void save_construct_data(Archive &ar, const A *t, const unsigned int file_version); } } class A { friend class boost::serialization::access; // friend function (omitting load_construct_data() for brevity) template<class Archive> friend void save_construct_data(Archive &ar, const A *t, const unsigned int file_version); public: static const int var1 = 1; static const int var2 = 2; template<class Archive> void serialize(Archive & ar, const unsigned int file_version) { // do nothing }; } // overridden Boost function namespace boost { namespace serialization { template<class Archive> inline void save_construct_data( Archive &ar, const A *t, const unsigned int file_version) { // link errors happen at both of these two lines ("undefined reference" of var1, var2). ar << boost::serialization::make_nvp("var1", ::A::var1); ar << boost::serialization::make_nvp("var2", t->var2); }; }} // namespace… This puzzles me since I thought that static members have external linkage. This question seems to be more about namespaces than it is about Boost::Serialization, but I post here because some Serialization user must have run into it. Thanks, Kurt

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boost multi_index_container with composite_key iterator
by Uthpal Urubail 04 Jun '15

04 Jun '15

Experts, Is there a better approach to iterator over boost multiindex composite key? The issue with the below approach is, the same key is appearing multiple times. typedef multi_index_container loadTable_Def; loadTable_Def pb; //! for(loadTable_Def::iterator i=pb.begin(),i_end=pb.end();i!=i_end; ) { // Get the range of the current key loadTable_Def::iterator iter_next=pb.upper_bound(pb.key_extractor()(*i)); do { loadTable_Def::iterator it1,it2; boost::tie(it1,it2) = pb.equal_range(boost::make_tuple(<passing multiple key >)); while(it1 != it2) { //std::cout<<"print values"<<" ,"; ++it1; } } while(++i!=iter_next); } Regards, UJ

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