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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal>When compiling mvapich-2.3.5 with GCC-11.1.0 on CentOS 7.9 I am seeing the following error when compiling with these flags:<o:p></o:p></p><p class=MsoNormal>./configure --prefix=/opt/mvapich2-2.3.5 --with-device=ch3:nemesis:tcp --disable-fortran<o:p></o:p></p><p class=MsoNormal>make<o:p></o:p></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:Consolas'>…<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:Consolas'>make[2]: Entering directory `/root/mvapich2-2.3.5'<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:Consolas'> CC src/mpi/attr/lib_libmpi_la-attr_delete.lo<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:Consolas'>In file included from src/mpi/attr/attr_delete.c:8:<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:Consolas'>./src/include/mpiimpl.h:1632:1: error: size of array element is not a multiple of its alignment<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:Consolas'>1632 | extern MPID_Request MPID_Request_direct[];<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:Consolas'> | ^~~~~~<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:Consolas'>./src/include/mpiimpl.h:1632:1: error: size of array element is not a multiple of its alignment<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:Consolas'>make[2]: *** [src/mpi/attr/lib_libmpi_la-attr_delete.lo] Error 1<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:Consolas'>make[2]: Leaving directory `/root/mvapich2-2.3.5'<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:Consolas'>make[1]: *** [all-recursive] Error 1<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:Consolas'>make[1]: Leaving directory `/root/mvapich2-2.3.5'<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:Consolas'>make: *** [all] Error 2<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:Consolas'>…<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Is this an issue of changes in GCC-11.1.0?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I am able to compile with GCC-10.3.0.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Sincerely,<o:p></o:p></p><p class=MsoNormal><i><span style='font-size:12.0pt;font-family:"Arial",sans-serif;color:gray'><img width=82 height=32 style='width:.8541in;height:.3333in' id="Picture_x0020_1" src="cid:image001.jpg@01D73DB0.7202BF00" alt="Description: LL"></span></i><span style='font-size:12.0pt;font-family:"Times New Roman",serif;color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal><i><span style='font-size:12.0pt;font-family:"Arial Black",sans-serif;color:gray'>Nicholas Clark</span></i><span style='font-size:12.0pt;font-family:"Times New Roman",serif;color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Arial",sans-serif;color:gray'>MIT Lincoln Laboratory <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Arial",sans-serif;color:gray'>ISR and Tactical Systems Division<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Arial",sans-serif;color:gray'>Embedded and Open Systems Group<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Arial",sans-serif;color:gray'>Systems Administration</span><span style='font-size:8.0pt;font-family:"Times New Roman",serif;color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Arial",sans-serif;color:gray'>244 Wood St., S3-487</span><i><span style='font-family:"Arial",sans-serif;color:#1F497D'><o:p></o:p></span></i></p><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Arial",sans-serif;color:gray'>Lexington, MA 02421-6426</span><span style='font-size:8.0pt;font-family:"Times New Roman",serif;color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Arial",sans-serif;color:gray'>(O): 781-981-9342</span><span style='font-size:8.0pt;font-family:"Times New Roman",serif;color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Arial",sans-serif;color:#1F497D'><a href="mailto:nicholas.clark@ll.mit.edu"><span style='color:blue'>nicholas.clark@ll.mit.edu</span></a></span><span style='font-size:8.0pt;font-family:"Times New Roman",serif;color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>