On Tue, Jun 22, 2010 at 11:40 AM, Kristian Oelgaard <k.b.oelga...@gmail.com> wrote: > On 21 June 2010 23:16, Kent Andre <kent-...@simula.no> wrote: >> >> Strange. I used dorsal to compile the dev versions of the various >> packages. Dolfin, ffc, and sfc are only a few days old. > > I removed fenics-syfi and cloned a new one, then I got a little > further but crashed on swiginac, I removed the python-swiginac 1.5.1-2 > which I got through synaptic and had Dorsal install swiginac 1.5.1 > (thank you Dorsal!) after which the demo.py file ran without > complaints.
What was the problem with python-swiginac? I'm maintaining the package in Debian so I would be interested to know about any problems with it (also in Ubuntu). Johannes > Kristian > >> But do you have any suggestions for how to optimize the FFC generated >> code ? I have used quadrature here, tensor representation is not good >> in this application. >> >> Kent >> >> >> On Mon, 2010-06-21 at 23:05 +0200, Kristian Oelgaard wrote: >>> I tried to run the code against the dev versions of FEniCS and got the >>> following error after successfully finishing the FFC part: >>> >>> Traceback (most recent call last): >>> File "demo.py", line 15, in <module> >>> V = FunctionSpace(mesh, "CG", 1) >>> File >>> "/home/oelgaard/software/fenics/dolfin/local/lib/python2.6/site-packages/dolfin/function/functionspace.py", >>> line 230, in __init__ >>> FunctionSpaceBase.__init__(self, mesh, element) >>> File >>> "/home/oelgaard/software/fenics/dolfin/local/lib/python2.6/site-packages/dolfin/function/functionspace.py", >>> line 44, in __init__ >>> ufc_element, ufc_dofmap = jit(self._ufl_element) >>> File >>> "/home/oelgaard/software/fenics/dolfin/local/lib/python2.6/site-packages/dolfin/compilemodules/jit.py", >>> line 44, in mpi_jit >>> return local_jit(*args, **kwargs) >>> File >>> "/home/oelgaard/software/fenics/dolfin/local/lib/python2.6/site-packages/dolfin/compilemodules/jit.py", >>> line 87, in jit >>> p = form_compiler.default_parameters() >>> AttributeError: 'module' object has no attribute 'default_parameters' >>> >>> Kristian >>> >>> On 21 June 2010 15:42, <kent-...@simula.no> wrote: >>> > >>> > Hi, just portet SFC to dolfin-dev and ufl-dev and made some simple >>> > comparisons with FFC. I >>> > don't know exactly how representative these are, but I thought I'd try to >>> > compare >>> > them for fun. >>> > >>> > I have used the following code: >>> > >>> > from dolfin import * >>> > import time >>> > >>> > for compiler in ["ffc", "sfc"]: >>> > >>> > for N in [200, 400, 800]: >>> > >>> > parameters["form_compiler"]["name"]=compiler >>> > if compiler == "ffc": >>> > parameters["form_compiler"]["optimize"] = True >>> > parameters ["form_compiler"]["cpp_optimize"] = True >>> > >>> > mesh = UnitSquare(N, N) >>> > V = FunctionSpace(mesh, "CG", 1) >>> > >>> > P=6 >>> > U = Function(V) >>> > energy = U**6*(U*U + inner(grad(U), grad(U)))*dx >>> > >>> > v = TestFunction(V) >>> > u = TrialFunction(V) >>> > >>> > F = derivative(energy, U, v) >>> > J = derivative(F, U, u) >>> > >>> > print "" >>> > print "First time" >>> > print "" >>> > t0 = time.time() >>> > A = assemble(J) >>> > t1 = time.time() >>> > print "First time for ", compiler, " was ", t1 - t0 >>> > >>> > print "" >>> > print "Second time" >>> > print "" >>> > t0 = time.time() >>> > A = assemble(J) >>> > t1 = time.time() >>> > >>> > print "Second time for ", compiler, " was ", t1 - t0 >>> > >>> > >>> > With these options SFC is about 3 times faster than FFC. How should I >>> > optimize FFC ? >>> > >>> > Kent >>> > >>> > >>> > >>> > _______________________________________________ >>> > Mailing list: https://launchpad.net/~ffc >>> > Post to : ffc@lists.launchpad.net >>> > Unsubscribe : https://launchpad.net/~ffc >>> > More help : https://help.launchpad.net/ListHelp >>> > >> >> >> > > _______________________________________________ > Mailing list: https://launchpad.net/~ffc > Post to : ffc@lists.launchpad.net > Unsubscribe : https://launchpad.net/~ffc > More help : https://help.launchpad.net/ListHelp > _______________________________________________ Mailing list: https://launchpad.net/~ffc Post to : ffc@lists.launchpad.net Unsubscribe : https://launchpad.net/~ffc More help : https://help.launchpad.net/ListHelp
