Matthew Kury <[email protected]> writes: > Yes you are correct I am sorry about that. I meant DMGetLocalVector, and the > ilk. > > here is a dummy function I am working on to try to figure out what is going > wrong: > ///////////////////////////////////////////// > // Get the information to operate on > // Make Local Versions > Vec XLoc; > DM Xdm; > PetscSection XSec; > PetscReal *XPoints=NULL; > > PetscErrorCode ierr; > > > ierr = DMGetLocalVector(msh.dm,&XLoc);chk;
Here, you get XLoc from msh.dm. > ierr = DMGetCoordinateDM(msh.dm,&Xdm);chk; > ierr = DMGetCoordinatesLocal(msh.dm, &XLoc);chk; > VecView(XLoc,pview); > > ierr = DMDAVecGetArrayRead(Xdm,XLoc,&XPoints);chk; > ierr = DMDAVecRestoreArrayRead(Xdm,XLoc,&XPoints);chk; > > ierr = DMRestoreLocalVector(Xdm,&XLoc);chk; Here, you return it to Xdm. > //////////// end of function > > the error I get that seems to appear after the 2nd call or so is: > 0]PETSC ERROR: --------------------- Error Message > -------------------------------------------------------------- > [0]PETSC ERROR: Invalid argument > [0]PETSC ERROR: Wrong type of object: Parameter # 2 > [0]PETSC ERROR: See http://www.mcs.anl.gov/petsc/documentation/faq.html for > trouble shooting. > [0]PETSC ERROR: Petsc Release Version 3.6.1, Jul, 22, 2015 > [0]PETSC ERROR: ./net.out on a arch-darwin-c-debug named > Matthews-MacBook-Pro-2.local by mkury Sat Apr 16 01:33:34 2016 > [0]PETSC ERROR: Configure options --with-cc=gcc --with-cxx=g++ > --with-fc=gfortran --download-fblaslapack --download-mpich > --download-petsc4py --download-triangle --download-chaco --download-metis > --download-parmetis --download-ctetgen > [0]PETSC ERROR: #2294 DMDAVecGetArrayRead() line 299 in > /usr/local/petsc-3.6.1/src/dm/impls/da/dagetarray.c This #2294 is nowhere near the top of your stack. Please check error codes. Running in a debugger would help you understand what is wrong. > [0]PETSC ERROR: #2295 Element_Investigation_TEST() line 248 in > /Users/mkury/Documents/Code/petFEM/src/elementFunctions.c > > > > > > > thanks again, > > Matt > On Apr 16, 2016, at 1:21 AM, Jed Brown <[email protected]> wrote: > >> Matthew Kury <[email protected]> writes: >> >>> Hello, >>> >>> I have done some reading and I have not been able to find out what the >>> proper way to create and use vectors within a function. >>> >>> If I have a function that passes in dm and V then: >>> +++ >>> DMPlexGetLocalVec(dm, &VLocal) ; >> >> This function doesn't exist, and neither does DMPlexCreateLocalVec (from >> the subject of your email), but when I gaze into my crystal ball, it >> says you're probably spelling it DMGetLocalVector. Please send the full >> error message. >> >>> DMGlobalToLocalBegin(dm,V,INSERT_VALUES,VLocal); >>> DMGlobalToLocalEnd(dm,V,INSERT_VALUES,VLocal) ; >>> >>> VecGetArray(VLoc,VLocalArray); >>> >>> “Stuff with VLocalArray” >>> >>> VecRestoreArray(VLoc,VLocalArray); >>> >>> DMLocalToGlobalBegin(dm,VLocal,ADD_VALUES,V); >>> DMLocalToGlobalEnd(dm,VLocal,ADD_VALUES,V); >>> >>> DMRestoreLocalVector(dm,&VLocal); >>> +++ >>> >>> The second time I call the function I get errors with the VecGetArray() >>> function. I would appreciate any advice as to what is going wrong. >>> >>> Thank you, >>> >>> Matthew
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