For one we haven't seen this issue before, and don't know what it causing this on your machine. [why is /home/txdy827/software/petsc-3.8.4/arch-linux2-cxx-debug/lib/libpetsc.a created in 'deterministic mode' as this message suggests].
It not clear why this warning comes up. Likely you can ignore it. Or if you wish to debug - suggest: - create a fresh build of petsc - and send us the relevant logs, [configure.log, make.log] And you are using a very old version of petsc. Suggest upgrading to current release - 3.13 - if feasible. Satish On Mon, 29 Jun 2020, yym wrote: > txdy827@ubuntu:~/software/petsc-3.8.4/src/snes/impls/ngmres$ make > make[1]: Warning: Archive > '/home/txdy827/software/petsc-3.8.4/arch-linux2-cxx-debug/lib/libpetsc.a' > seems to have been created in deterministic mode. 'snesngmres.o' will always > be updated. Please consider passing the U flag to ar to avoid the problem. > > > > > /home/txdy827/software/petsc-3.8.4/arch-linux2-cxx-debug/bin/mpicc -o > snesngmres.o -c -Wall -Wwrite-strings -Wno-strict-aliasing > -Wno-unknown-pragmas -fstack-protector -fvisibility=hidden -g -O > -I/home/txdy827/software/petsc-3.8.4/include > -I/home/txdy827/software/petsc-3.8.4/arch-linux2-cxx-debug/include > `pwd`/snesngmres.c > /usr/bin/ar cr > /home/txdy827/software/petsc-3.8.4/arch-linux2-cxx-debug/lib/libpetsc.a > snesngmres.o > if test -n ""; then /usr/bin/ar cr snesngmres.lo; fi > /bin/rm -f snesngmres.o snesngmres.lo > make[1]: Warning: Archive > '/home/txdy827/software/petsc-3.8.4/arch-linux2-cxx-debug/lib/libpetsc.a' > seems to have been created in deterministic mode. 'snesngmres.o' will always > be updated. Please consider passing the U flag to ar to avoid the problem. > make[1]: Warning: Archive > '/home/txdy827/software/petsc-3.8.4/arch-linux2-cxx-debug/lib/libpetsc.a' > seems to have been created in deterministic mode. 'ngmresfunc.o' will always > be updated. Please consider passing the U flag to ar to avoid the problem. > /home/txdy827/software/petsc-3.8.4/arch-linux2-cxx-debug/bin/mpicc -o > ngmresfunc.o -c -Wall -Wwrite-strings -Wno-strict-aliasing > -Wno-unknown-pragmas -fstack-protector -fvisibility=hidden -g -O > -I/home/txdy827/software/petsc-3.8.4/include > -I/home/txdy827/software/petsc-3.8.4/arch-linux2-cxx-debug/include > `pwd`/ngmresfunc.c > /usr/bin/ar cr > /home/txdy827/software/petsc-3.8.4/arch-linux2-cxx-debug/lib/libpetsc.a > ngmresfunc.o > if test -n ""; then /usr/bin/ar cr ngmresfunc.lo; fi > /bin/rm -f ngmresfunc.o ngmresfunc.lo > make[1]: Warning: Archive > '/home/txdy827/software/petsc-3.8.4/arch-linux2-cxx-debug/lib/libpetsc.a' > seems to have been created in deterministic mode. 'ngmresfunc.o' will always > be updated. Please consider passing the U flag to ar to avoid the problem. > make[1]: Warning: Archive > '/home/txdy827/software/petsc-3.8.4/arch-linux2-cxx-debug/lib/libpetsc.a' > seems to have been created in deterministic mode. 'anderson.o' will always be > updated. Please consider passing the U flag to ar to avoid the problem. > /home/txdy827/software/petsc-3.8.4/arch-linux2-cxx-debug/bin/mpicc -o > anderson.o -c -Wall -Wwrite-strings -Wno-strict-aliasing -Wno-unknown-pragmas > -fstack-protector -fvisibility=hidden -g -O > -I/home/txdy827/software/petsc-3.8.4/include > -I/home/txdy827/software/petsc-3.8.4/arch-linux2-cxx-debug/include > `pwd`/anderson.c > /usr/bin/ar cr > /home/txdy827/software/petsc-3.8.4/arch-linux2-cxx-debug/lib/libpetsc.a > anderson.o > if test -n ""; then /usr/bin/ar cr anderson.lo; fi > /bin/rm -f anderson.o anderson.lo > make[1]: Warning: Archive > '/home/txdy827/software/petsc-3.8.4/arch-linux2-cxx-debug/lib/libpetsc.a' > seems to have been created in deterministic mode. 'anderson.o' will always be > updated. Please consider passing the U flag to ar to avoid the problem. > > > > > > > > thank you for your help!
