Hello, I successfully installed firedrake but when I try to test the firedrake installation i get this error: (firedrake) [msarrafj@caml-lin Software]$ python -c "import firedrake" Traceback (most recent call last): File "<string>", line 1, in <module> File "/home/cougarnet.uh.edu/msarrafj/Software/firedrake/src/firedrake/firedrake/__init__.py <http://cougarnet.uh.edu/msarrafj/Software/firedrake/src/firedrake/firedrake/__init__.py>", line 32, in <module> from pyop2 import op2 # noqa: F401 File "/home/cougarnet.uh.edu/msarrafj/Software/firedrake/src/PyOP2/pyop2/__init__.py <http://cougarnet.uh.edu/msarrafj/Software/firedrake/src/PyOP2/pyop2/__init__.py>", line 4, in <module> from pyop2.op2 import * # noqa File "/home/cougarnet.uh.edu/msarrafj/Software/firedrake/src/PyOP2/pyop2/op2.py <http://cougarnet.uh.edu/msarrafj/Software/firedrake/src/PyOP2/pyop2/op2.py>", line 42, in <module> from pyop2.base import i # noqa: F401 File "/home/cougarnet.uh.edu/msarrafj/Software/firedrake/src/PyOP2/pyop2/base.py <http://cougarnet.uh.edu/msarrafj/Software/firedrake/src/PyOP2/pyop2/base.py>", line 57, in <module> from pyop2.sparsity import build_sparsity ImportError: /home/cougarnet.uh.edu/msarrafj/Software/firedrake/src/PyOP2/pyop2/sparsity.cpython-36m-x86_64-linux-gnu.so: <http://cougarnet.uh.edu/msarrafj/Software/firedrake/src/PyOP2/pyop2/sparsity.cpython-36m-x86_64-linux-gnu.so:> undefined symbol: PetscMallocA Attached is the associated firedrake-install.log if it helps Thanks in advance for your help. Sincerely, Sarraf