PETSc, pronounced PET-see (the S is silent), is a suite of data structures and routines for the scalable (parallel) solution of scientific applications modeled by partial differential equations.
Questions tagged [petsc]
145 questions
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using PETSc in gfortran, but it didn't compile
I want to test and use PESTc in fortran, so I wrote something very simple and null like (petscexe.F):
PROGRAM petscexe
INCLUDE 'petscsys.h'
END PROGRAM petscexe
to see if the header file can be correctly imported.
I compile the file with…
jengmge
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generating petsc binary file using python
I am trying to create a PETSC binary file using python. I try to run the script on bash shell but I get an error
$ python -c 'print file.shape\n import sys,os\n sys.path.append(os.path.join(os.environ['PETSC_DIR'],'bin','pythonscripts'))\nimport…
user3097509
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1 answer
creal and cimag problems with Clang 3.4
I am compiling a library with Petsc using Clang 3.4 and get:
error: use of undeclared identifier 'creal'
it follows from the following define:
petscmath.h:121:38: note: expanded from macro 'PetscRealPartComplex'
#define PetscRealPartComplex(a) …
Denis
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Howto enable stronger optimization builds
I am trying to build PETSc and have problems to enable optimization. Without specifying, PETSc always creates a debugging build, but I can turn that off with passing --with-debugging=0 to cmake. However, this only enables -O1 by default, but as my…
user3046263
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2 answers
C and MPI: function works differently with same data
I have successfully wrote a complicate function with PETSc library (it's a MPI-based scientific library for parallel solving huge linear systems). This library provides its own "malloc" version and basic datatypes (i.e. "PetscInt" as standard…
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3 answers
easy petsc function call in a class
The following question might be easy to answer, but I did not find any solution in the Internet. To put it in a nutshell, I put some petsc function calls in a class.
The following equation solver script works without any problems:
static char help[]…
Sebastian
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Why the PETSC code run in 1 process and doesn't run in 2 processes?
This is a simple code from the book PETSc for Partial Differential Equations: Numerical Solutions in C and Python. It computes the zero of atan(x). If I run it in one process, it runs properly. However, if I run in two processes, it doesn't run. I…
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compile error related to "in expansion of macro ‘CHKERRQ"’
I have this compiler error related to "in expansion of macro ‘CHKERRQ’" from PETSC whenever I call "CHKERRQ", I am not sure what causes it, could anyone please give any advice?
Thanks for your help in advance,
Feng
Feng
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1 answer
Compile petsc included code using a makefile, failed for '.f90' but passed for '.F90'
I'm leaning petsc (3.13.1) on a Linux virtual machine.
The compiler is mpich-3.2.1 compiled with gfortran.
While going through the tutorials I found the extensinos are .F90,
the files did not work after I changed the ext to .f90.
I added some rules…
Frank Han
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