> when I compiled with > #define align_boundary sizeof(double) > example/sql/sudoku_odbc.mod > and some other models glpsol stopped without returning results.
> With > #define align_boundary 16 > I obtained the expect results. > http://msdn.microsoft.com/en-us/library/aa290049.aspx > teaches "On both of the 64-bit platforms, the top of each stackframe > is 16-byte aligned." > http://msdn.microsoft.com/en-us/library/ycsb6wwf.aspx > teaches "malloc is required to return memory on a 16-byte boundary." > AMD Athlon offers 128 bit memory operations (e.g. CMPXCHG16B). > http://en.wikipedia.org/wiki/X86-64 > AMD64 technology for simultaneous high-performance 32- and 64-bit > computing with a 128-bit integrated DDR memory controller > http://www.amd.com/us-en/Corporate/VirtualPressRoom/0,,51_104_543_5730~82319,00.html > Hence 128-bit alignment makes some sense. Thank you. All this is very educational. :) Nonetheless, it is unclear to me why and where the addressing error happens, because all basic data types used in glpk are not longer than 8 bytes, so 8-byte alignment for structs and arrays is sufficient in all cases, even in the case of 8-byte pointers. _______________________________________________ Help-glpk mailing list [email protected] http://lists.gnu.org/mailman/listinfo/help-glpk
