So glad I asked this question instead of reinventing the wheel :) I was mostly working off the Boussinesq and elasticity examples, so I missed step-35.
On Sunday, June 19, 2016 at 3:18:33 PM UTC-7, bangerth wrote: > > On 06/19/2016 04:12 PM, Daniel Shapero wrote: > > I'm working on a problem which involves iterating over the DoFHandlers > of both > > a scalar and a vector field at the same time, similar to step 31 > > < > https://urldefense.proofpoint.com/v2/url?u=https-3A__dealii.org_developer_doxygen_deal.II_step-5F31.html-23BoussinesqFlowProblemassemble-5Fstokes-5Fsystem&d=AwMFaQ&c=ODFT-G5SujMiGrKuoJJjVg&r=bn1clvQAiDQrfAC4yKbN0PlSr7RWRs-U3WJ0zRBB2qM&m=LKWtqGDlr1IIKNzL19q-BeEv113uSM-htWgg0-mfxtg&s=ZhkrkZJVtq3qsxTuL_dfYkgGkRnWYG_k859WMeIjWYQ&e=>. > > > > I'm creating an iterator class which will wrap up the iterators for both > the > > scalar and vector field into one object using a std::array of > > active_cell_iterators. The increment operator is implemented by > incrementing > > each active_cell_iterator in the array; the dereference operator returns > a > > reference to the array; etc. I've tested this out and it works fine. > > > > I'd like to be able to parallelize the assembly using WorkStream, which > uses > > an iterator range. What operations are required of the iterators passed > to > > WorkStream? From the comments in the source code, it looks like the > iterator > > must have operator- defined, so I take it that it must be a > random-access > > iterator > > < > https://urldefense.proofpoint.com/v2/url?u=http-3A__en.cppreference.com_w_cpp_concept_RandomAccessIterator&d=AwMFaQ&c=ODFT-G5SujMiGrKuoJJjVg&r=bn1clvQAiDQrfAC4yKbN0PlSr7RWRs-U3WJ0zRBB2qM&m=LKWtqGDlr1IIKNzL19q-BeEv113uSM-htWgg0-mfxtg&s=vlOxQjDUZgqn4d-Y5UwVkuANFbQJHZSsP3ooIzECGyc&e=>. > > > > The simple multi-iterator implementation I have now is only a forward > > iterator, since that was the bare minimum needed to get things working > in > > single-threaded mode. > > Daniel, > you are looking for the SynchronousIterator class :-) > > Cheers > W. > > -- > ------------------------------------------------------------------------ > Wolfgang Bangerth email: bang...@math.tamu.edu > <javascript:> > www: http://www.math.tamu.edu/~bangerth/ > > -- The deal.II project is located at http://www.dealii.org/ For mailing list/forum options, see https://groups.google.com/d/forum/dealii?hl=en --- You received this message because you are subscribed to the Google Groups "deal.II User Group" group. To unsubscribe from this group and stop receiving emails from it, send an email to dealii+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
