Cristobal Navarro wrote:
> i made some progress while we were mailing between us.
>
>
> first of all, im trying to see if my object can be serialized /
> deserialized in the common way without going into MPI yet.

 

> objects are Lattices, they have Nodes and Edges. nothing more.

> it compiles and links ok, and when i test serialization /
> deserialization with the following code..:
> 
>                 printf("serializing to binlat.x...\n");
>                 //!file mode
>                 /*
>                 std::ofstream ofs("binlat.x", ios::binary);
>                 boost::archive::binary_oarchive oa(ofs);
>                 */
>                 oa << *(this->lat);
>                 ofs.close();
>                 lat->print(); //check what lattice im serializing
>                 //!Deserialization - read file  binlat.x and
> reconstruct
>                 printf("reconstructing serialized binlat.x...\n");
>                 Lattice nl;
>                 std::ifstream ifs("binlat.x", ios::binary);
>                 boost::archive::binary_iarchive ia(ifs);
>                 //!deserialize object
>                 ia >> nl;
>                 ifs.close();
>                 nl.print();
>

Hmmm- what surrounds this?

 

>                 oa << *(this->lat);

 

 

 

 

 

 

>
>
> i get bad errors when deserializing, complaining about a bool and
> char.
> serializing to binlat.x...
> Lattice::print().....START
> Nodes=2   Edges= 1
> Node[0] sp=1 ext=1
> Linked to edge 2 (Node 3 or 0 )
> Node[3] sp=1 ext=2
> Linked to edge 2 (Node 3 or 0 )
> Lattice::print().....END
> [enter]
> reconstructing swerialized binlat.x...
> [enter]
> plattice:
> /usr/local/include/boost/archive/basic_binary_iprimitive.hpp:98: void
> boost::archive::basic_binary_iprimitive<Archive, Elem,
> Tr>::load(bool&) [with Archive = boost::archive::binary_iarchive,
> Elem = char, Tr = std::char_traits<char>]: Assertion `0 == i || 1 ==
> i' failed.    
> [lenovo00:29384] *** Process received signal ***
> [lenovo00:29384] Signal: Aborted (6)
> [lenovo00:29384] Signal code:  (-6)
> [lenovo00:29384] [ 0] [0xfea410]
> [lenovo00:29384] [ 1] /lib/tls/i686/cmov/libc.so.6(abort+0x182)
> [0xd41a82]
> [lenovo00:29384] [ 2]
> /lib/tls/i686/cmov/libc.so.6(__assert_fail+0xf8) [0xd37718]
> [lenovo00:29384] [ 3]
> ..
> ..
> *** End of error message ***
>
>
> i started debugging, and realized that the problem is completely gone
> when i remove "edges" from the serialization members of "Lattice"
> object. 
> its weird, because "edge" is a map of <int, Edge> and much simplier
> than "nodes" which does work. obviously i cannot continue without
> edges, so i need to fix it somehow, but i dont understand the error
> related to edges, maybe is something im not seeing.  
>
>
> dont get distracted by the messy code, i had to edit it a little to
> focus on the case.
> regards
> Cristobal
>
>
>
>
>
>
> On Thu, Aug 26, 2010 at 4:35 PM, Robert Ramey <ramey@rrsd.com> wrote:
>
>> Change the "would" into "is": it is possible to mix Boost.MPI with
>> Boost.Serialization. Any objext that can be serialized can be sent by
>> Boost.MPI. This was actually the basic idea behind Boost.MPI, to use
>> Boost.Serialization to pack and unpack MPI buffers, or to create
>> custom MPI datatypes.
>
> On thing that I never understood is why you need MPI data types at
> all.
> If one is serializing (packing) to a binary array, and sending that,
> what
> hae MPI data types have to do with it.
>
> If one were using heterogenious machines, I could understand the
> usage of MPI types. But as I understand it, the MPI serialization
> presumes
> that the machines are binary compatible.  So I'm just not seeing this.
>
> Robert Ramey
>
>
>
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