I get the following with a debug build.
balay@petsc-02:/scratch/balay/petsc/src/mat/tests$ make ex238 gcc -fPIC -Wall -Wwrite-strings -Wno-strict-aliasing -Wno-unknown-pragmas -fstack-protector -fvisibility=hidden -g3 -fPIC -Wall -Wwrite-strings -Wno-strict-aliasing -Wno-unknown-pragmas -fstack-protector -fvisibility=hidden -g3 -I/scratch/balay/petsc/include -I/scratch/balay/petsc/arch-linux-c-debug/include ex238.c -Wl,-rpath,/scratch/balay/petsc/arch-linux-c-debug/lib -L/scratch/balay/petsc/arch-linux-c-debug/lib -Wl,-rpath,/usr/lib/gcc/x86_64-linux-gnu/7 -L/usr/lib/gcc/x86_64-linux-gnu/7 -Wl,-rpath,/usr/lib/x86_64-linux-gnu -L/usr/lib/x86_64-linux-gnu -Wl,-rpath,/lib/x86_64-linux-gnu -L/lib/x86_64-linux-gnu -lpetsc -llapack -lblas -lpthread -lm -lX11 -lstdc++ -ldl -lgfortran -lm -lgfortran -lm -lgcc_s -lquadmath -lstdc++ -ldl -o ex238 balay@petsc-02:/scratch/balay/petsc/src/mat/tests$ valgrind --tool=memcheck ./ex238 -mat_block_size 12 ==34355== Memcheck, a memory error detector ==34355== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al. ==34355== Using Valgrind-3.13.0 and LibVEX; rerun with -h for copyright info ==34355== Command: ./ex238 -mat_block_size 12 ==34355== ==34355== Warning: set address range perms: large range [0x59e43040, 0xb696a840) (undefined) <<<<<<<<
Hang? takes a long time. try a different example
balay@petsc-02:/scratch/balay/petsc/src/mat/tests$ make ex237 gcc -fPIC -Wall -Wwrite-strings -Wno-strict-aliasing -Wno-unknown-pragmas -fstack-protector -fvisibility=hidden -g3 -fPIC -Wall -Wwrite-strings -Wno-strict-aliasing -Wno-unknown-pragmas -fstack-protector -fvisibility=hidden -g3 -I/scratch/balay/petsc/include -I/scratch/balay/petsc/arch-linux-c-debug/include ex237.c -Wl,-rpath,/scratch/balay/petsc/arch-linux-c-debug/lib -L/scratch/balay/petsc/arch-linux-c-debug/lib -Wl,-rpath,/usr/lib/gcc/x86_64-linux-gnu/7 -L/usr/lib/gcc/x86_64-linux-gnu/7 -Wl,-rpath,/usr/lib/x86_64-linux-gnu -L/usr/lib/x86_64-linux-gnu -Wl,-rpath,/lib/x86_64-linux-gnu -L/lib/x86_64-linux-gnu -lpetsc -llapack -lblas -lpthread -lm -lX11 -lstdc++ -ldl -lgfortran -lm -lgfortran -lm -lgcc_s -lquadmath -lstdc++ -ldl -o ex237 balay@petsc-02:/scratch/balay/petsc/src/mat/tests$ valgrind --tool=memcheck -q ./ex237 -f /scratch/balay/petsc/share/petsc/datafiles/matrices/spd-real-int32-float64 Benchmarking MatMult: with A seqaij 12x12 Benchmarking MatProduct AB: with A seqaij 12x12 and B seqdense 12x2 Benchmarking MatProduct AB: with A seqaij 12x12 and B seqdense 12x4 Benchmarking MatProduct AB: with A seqaij 12x12 and B seqdense 12x8 Benchmarking MatProduct AB: with A seqaij 12x12 and B seqdense 12x16 Benchmarking MatProduct AB: with A seqaij 12x12 and B seqdense 12x32 Benchmarking MatProduct AB: with A seqaij 12x12 and B seqdense 12x64 Benchmarking MatProduct AB: with A seqaij 12x12 and B seqdense 12x128 balay@petsc-02:/scratch/balay/petsc/src/mat/tests$
<<<<<<<<< So the likely issue is - this opt build with '-march=native' [perhaps this valgrind version is older than the cpu]. Ok try an optimized build on an older CPU - aka es [@gce]
balay@es:/scratch/balay/petsc/src/mat/tests$ make ex237 gcc -fPIC -Wall -Wwrite-strings -Wno-strict-aliasing -Wno-unknown-pragmas -fstack-protector -fvisibility=hidden -march=native -O3 -fPIC -Wall -Wwrite-strings -Wno-strict-aliasing -Wno-unknown-pragmas -fstack-protector -fvisibility=hidden -march=native -O3 -I/scratch/balay/petsc/include -I/scratch/balay/petsc/arch-linux-c-opt/include ex237.c -Wl,-rpath,/scratch/balay/petsc/arch-linux-c-opt/lib -L/scratch/balay/petsc/arch-linux-c-opt/lib -Wl,-rpath,/usr/lib/gcc/x86_64-linux-gnu/7 -L/usr/lib/gcc/x86_64-linux-gnu/7 -Wl,-rpath,/usr/lib/x86_64-linux-gnu -L/usr/lib/x86_64-linux-gnu -Wl,-rpath,/lib/x86_64-linux-gnu -L/lib/x86_64-linux-gnu -lpetsc -llapack -lblas -lpthread -lm -lX11 -lstdc++ -ldl -lgfortran -lm -lgfortran -lm -lgcc_s -lquadmath -lstdc++ -ldl -o ex237 balay@es:/scratch/balay/petsc/src/mat/tests$ valgrind --tool=memcheck -q ./ex237 -f /scratch/balay/petsc/share/petsc/datafiles/matrices/spd-real-int32-float64 Benchmarking MatMult: with A seqaij 12x12 Benchmarking MatProduct AB: with A seqaij 12x12 and B seqdense 12x2 Benchmarking MatProduct AB: with A seqaij 12x12 and B seqdense 12x4 Benchmarking MatProduct AB: with A seqaij 12x12 and B seqdense 12x8 Benchmarking MatProduct AB: with A seqaij 12x12 and B seqdense 12x16 Benchmarking MatProduct AB: with A seqaij 12x12 and B seqdense 12x32 Benchmarking MatProduct AB: with A seqaij 12x12 and B seqdense 12x64 Benchmarking MatProduct AB: with A seqaij 12x12 and B seqdense 12x128 balay@es:/scratch/balay/petsc/src/mat/tests$ <<<<<<< Satish On Mon, 22 Feb 2021, Barry Smith wrote:
I knew they hate Macs but now Linux? Any trustworthy machines to run valgrind?
$ petscmpiexec -valgrind -n 1 ./ex238 -mat_block_size 12 ==14144== ==14144== Process terminating with default action of signal 4 (SIGILL) ==14144== Illegal opcode at address 0x4F808A9 ==14144== at 0x4F808A9: PetscSetDisplay (in /scratch/bsmith/petsc/arch-add-baij-12/lib/libpetsc.so.3.014.4) ==14144== by 0x4F086BD: PetscOptionsCheckInitial_Private (in /scratch/bsmith/petsc/arch-add-baij-12/lib/libpetsc.so.3.014.4) ==14144== by 0x4F0D5BC: PetscInitialize (in /scratch/bsmith/petsc/arch-add-baij-12/lib/libpetsc.so.3.014.4) ==14144== by 0x108D0E: main (in /scratch/bsmith/petsc/src/mat/tests/ex238) Illegal instruction (core dumped) /scratch/bsmith/petsc/src/mat/tests (barry/2021-02-12/add-baij-12=) arch-add-baij-12 $ echo $PETSC_OPTIONS
/scratch/bsmith/petsc/src/mat/tests (barry/2021-02-12/add-baij-12=) arch-add-baij-12 $ hostname petsc-02 /scratch/bsmith/petsc/src/mat/tests (barry/2021-02-12/add-baij-12=) arch-add-baij-12 $ uname -a Linux petsc-02 4.15.0-135-generic #139-Ubuntu SMP Mon Jan 18 17:38:24 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux /scratch/bsmith/petsc/src/mat/tests (barry/2021-02-12/add-baij-12=) arch-add-baij-12 $ which valgrind /usr/bin/valgrind
$ make ex237 gcc -fPIC -Wall -Wwrite-strings -Wno-strict-aliasing -Wno-unknown-pragmas -fstack-protector -fvisibility=hidden -march=native -O3 -fPIC -Wall -Wwrite-strings -Wno-strict-aliasing -Wno-unknown-pragmas -fstack-protector -fvisibility=hidden -march=native -O3 -I/scratch/bsmith/petsc/include -I/scratch/bsmith/petsc/arch-add-baij-12/include ex237.c -Wl,-rpath,/scratch/bsmith/petsc/arch-add-baij-12/lib -L/scratch/bsmith/petsc/arch-add-baij-12/lib -lpetsc -llapack -lblas -lpthread -lm -lX11 -lquadmath -ldl -o ex237 /scratch/bsmith/petsc/src/mat/tests (barry/2021-02-12/add-baij-12=) arch-add-baij-12 $ petscmpiexec -valgrind -n 1 ./ex237 ==14841== ==14841== Process terminating with default action of signal 4 (SIGILL) ==14841== Illegal opcode at address 0x4F808A9 ==14841== at 0x4F808A9: PetscSetDisplay (in /scratch/bsmith/petsc/arch-add-baij-12/lib/libpetsc.so.3.014.4) ==14841== by 0x4F086BD: PetscOptionsCheckInitial_Private (in /scratch/bsmith/petsc/arch-add-baij-12/lib/libpetsc.so.3.014.4) ==14841== by 0x4F0D5BC: PetscInitialize (in /scratch/bsmith/petsc/arch-add-baij-12/lib/libpetsc.so.3.014.4) ==14841== by 0x109DE0: main (in /scratch/bsmith/petsc/src/mat/tests/ex237) Illegal instruction (core dumped) /scratch/bsmith/petsc/src/mat/tests (barry/2021-02-12/add-baij-12=) arch-add-baij-12