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</o:shapelayout></xml><![endif]--></head><body lang=EN-CA link="#0563C1" vlink="#954F72" style='word-wrap:break-word'><div class=WordSection1><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt'>Dear PETSc developers and users,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt'>I am trying to install the latest PETSc version on an ancient cluster. The OpenMPI version is 1.6.5 and Compiler is Intel 14.0, which are the newest on that cluster. I have no problem to install PETSc up to version 3.12.5. However, if I try to use PETSc 3.13+, there are three undefined reference errors in MPI_Win_allocate, MPI_Win_attach and MPI_Win_create_dynamic. I know these three functions are available from OpenMPI 2.0+. Because the cluster is not in technical support anymore, there is no way I can install new OpenMPI version or do some update. Is it possible to disable these three functions in PETSc 3.13+ version?<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt'>The errors occur in ‘make check’ step:<o:p></o:p></span></p><p class=p1><span class=s1>/home/dsu/soft/petsc/petsc-3.13.0/linux-intel-openmpi/lib/libpetsc.so: undefined reference to `MPI_Win_allocate'</span><o:p></o:p></p><p class=p1><span class=s1>/home/dsu/soft/petsc/petsc-3.13.0/linux-intel-openmpi/lib/libpetsc.so: undefined reference to `MPI_Win_attach'</span><o:p></o:p></p><p class=p1><span class=s1>/home/dsu/soft/petsc/petsc-3.13.0/linux-intel-openmpi/lib/libpetsc.so: undefined reference to `MPI_Win_create_dynamic'</span><o:p></o:p></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt'>The configuration used is shown below:<o:p></o:p></span></p><p class=p1><span lang=EN-US style='font-size:11.0pt'> </span><span class=s1>./configure --with-cc=mpicc --with-cxx=mpicxx --with-fc=mpif90 --download-mumps --download-scalapack --download-parmetis --download-metis --download-fblaslapack --download-hypre --download-superlu --download-hdf5=yes --with-debugging=0 COPTFLAGS="-O3 -march=native -mtune=native" CXXOPTFLAGS="-O3 -march=native -mtune=native" FOPTFLAGS="-O3 -march=native -mtune=nativels"</span><o:p></o:p></p><p class=MsoNormal><span style='font-size:11.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'>Thanks,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'>Danyang<o:p></o:p></span></p></div></body></html>