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Diffstat (limited to 'doc/FAQ')
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1 files changed, 53 insertions, 1 deletions
@@ -1,7 +1,7 @@ Cactus Code Frequently Asked Questions -$Header: /mnt/data2/cvs2svn/cvs-repositories/Cactus/doc/FAQ,v 1.46 2002-09-22 13:35:52 allen Exp $ +$Header: /mnt/data2/cvs2svn/cvs-repositories/Cactus/doc/FAQ,v 1.47 2002-09-22 13:56:59 allen Exp $ Also available at http://www.cactuscode.org/Documentation/FAQ @@ -34,6 +34,7 @@ B3 How do I checkout an earlier version of Cactus ? B4 When running GetCactus it tells me it is refusing to update my thorn because it is installed from a different repository. + ------------------------------------------------------------------------------ Configuring and Building: @@ -158,6 +159,8 @@ D8 (Linux) Testsuites for CactusEinstein/AHFinder and CactusBench/BenchADM D9 How do I run Cactus until a given coordinate time instead of to a given iteration number? +D10 Output to screen using the Info IO method of IOBasic doesn't work. + ------------------------------------------------------------------------------ Thorn Writing: @@ -183,6 +186,12 @@ E5 What is the difference between using "const cGH *cctkGH" and "cGH *cctkGH" E6 On compiling Fortran code I get errors like "dummy argument CCTK_DIM has not been given a type", but I'm not using CCTK_DIM in the routine? +E7 If I have two grid array groups with identical sizes (and ghost zones, + distributions, etc.), are they guaranteed to be distributed in the same + way? That is, can I count on the fact that their local shapes (lsh) + will be the same? It is true empirically. What if the grid arrays have + different variable types or numbers of time levels? + ------------------------------------------------------------------------------ General @@ -213,6 +222,11 @@ F8 How does Cactus manage to so seamlessly call Fortran routines from C, and vice versa? +------------------------------------------------------------------------------ +Documentation: + +G1 How can I build the ThornGuide documentation for single thorns or + arrangements? @@ -857,6 +871,20 @@ D9 How do I run Cactus until a given coordinate time instead of to a Instead of setting cactus::cctk_itlast set cactus::cctk_final_time to the required coordinate time, and also set cactus::terminate = "time". +D10 Output to screen using the Info IO method of IOBasic doesn't work. + + I want to watch min/max values for 'wavetoy::phi' during a cactus run + on stdout. For that, I added + + IOBasic::outInfo_every = 10 + IOBasic::outInfo_vars = "wavetoy::phi" + + to my parameterfile. Thorn IOBasic is active, but I only get the + iteration number and coordinate time printed to screen. + + You need to activate a thorn which implements the min/max reductions, + for example CactusPUGH/PUGHReduce. + ------------------------------------------------------------------------------ Thorn Writing: @@ -948,6 +976,23 @@ E5 I am writing a thorn, what is the difference between using have any benefit in writing cleaner code. I think this is just overkill and using just 'const cGH *' is fine. +E6 On compiling Fortran code I get errors like "dummy argument CCTK_DIM has + not been given a type", but I'm not using CCTK_DIM in the routine? + + Check if you have passed CCTK_ARGUMENTS in the argument list for the + routine, is do you must have a line + + DECLARE_CCTK_ARGUMENTS + + in your declarations section. + +E7 If I have two grid array groups with identical sizes (and ghost zones, + distributions, etc.), are they guaranteed to be distributed in the same + way? That is, can I count on the fact that their local shapes (lsh) + will be the same? It is true empirically. What if the grid arrays have + different variable types or numbers of time levels? + + Yes to all. ------------------------------------------------------------------------------ General @@ -1061,3 +1106,10 @@ F8 How does Cactus manage to so seamlessly call Fortran routines from we have macros for one, two or three strings in an argument list. +------------------------------------------------------------------------------ +Documentation: + +G1 How can I build the ThornGuide documentation for single thorns or + arrangements? + + gmake Thorn
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