[FLASH-USERS] Problems with multigrid in cylindrical coordinates

ipatov at dtm.ciw.edu ipatov at dtm.ciw.edu
Thu Apr 12 16:42:19 CDT 2007


To: flash-users

   Problems with multigrid in cylindrical coordinates (we consider
collapse+sod:
collapse of a cloud together with a moving front):

(1)
Our runs with multipole were OK in FLASH2.5.
When we tried to make the same runs with multigrid (i.e, used only -auto),
then in FLASH2.5 we got errors after gmake

[e.g., external subroutine MG-INIT
   CHARACTER*1 MPI_ARGVS_NULL(1,1)

external subroutine MG_INIT_SRC

   CHARACTER*1 MPI_ARGVS_NULL(1,1)
   mg_unk(:,:,nguard+1,img_src,lb) &  ]

(2)
For FLASH2.3, gmake was passed for multigrid (we use 2D cylindrical), but
after initial plot I got
"mg_init:  unsupported grid geometry":

 [04-11-2007  14:42.00] *** plotfile: dustcoll_hdf5_plt_cnt_0000
 [04-11-2007  14:42.00] *** wrote to dustcoll_hdf5_plt_cnt_0000
 [04-11-2007  14:42.00] step       1  t=  0.000000E+00  dt= 1.000000E+00
 [04-11-2007  14:42.00] abort_flash():  called by PE     0;  message follows:
 [04-11-2007  14:42.00] mg_init:  unsupported grid geometry

Best regards
Sergei






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