Hi Stefano,
Sure, please see the following. The PETSC_ARCH field is empty in the printout
despite the fact that it was set to 'arch-linux-c-opt' in the shell.
{'PETSC_DIR': '/home/pesun/.emopt', 'PETSC_ARCH': ''}
Best regards,
Peng Sun
________________________________
From: Stefano Zampini <stefano.zamp...@gmail.com>
Sent: Thursday, October 13, 2022 1:57 PM
To: Matthew Knepley <knep...@gmail.com>
Cc: Peng Sun <p...@outlook.com>; petsc-users@mcs.anl.gov
<petsc-users@mcs.anl.gov>
Subject: Re: [petsc-users] Issue with single precision complex numbers in
petsc4py
Matt
Yes, petsc4py does the right thing. This is probably. Picking up the wrong
PETSc arch.
Peng, can you please run this?
import petsc4py
petsc4py.init()
print(petsc4py.get_config())
On Oct 13, 2022, at 11:23 PM, Matthew Knepley
<knep...@gmail.com<mailto:knep...@gmail.com>> wrote:
Lisandro,
PETSc is compiled for single. Does petsc4py respect this, or does it always use
double for getArray() and friends?
Thanks,
Matt
On Thu, Oct 13, 2022 at 11:42 AM Peng Sun
<p...@outlook.com<mailto:p...@outlook.com>> wrote:
Hi Matt,
Sure, please see the attached configure.log file. Thanks!
Best regards,
Peng Sun
________________________________
From: Matthew Knepley <knep...@gmail.com<mailto:knep...@gmail.com>>
Sent: Thursday, October 13, 2022 6:34 AM
To: Peng Sun <p...@outlook.com<mailto:p...@outlook.com>>
Cc: petsc-users@mcs.anl.gov<mailto:petsc-users@mcs.anl.gov>
<petsc-users@mcs.anl.gov<mailto:petsc-users@mcs.anl.gov>>
Subject: Re: [petsc-users] Issue with single precision complex numbers in
petsc4py
First send configure.log so we can see the setup.
Thanks,
Matt
On Thu, Oct 13, 2022 at 12:53 AM Peng Sun
<p...@outlook.com<mailto:p...@outlook.com>> wrote:
Dear PETSc community,
I have a question regarding the single precision complex numbers of petsc4py.
I configured PETSc with the “--with-scalar-type=complex
--with-precision=single" option before compiling, but all the DA structures I
created with petsc4py had double precision.
Here is a minimum test code on Python 3.8/PETSc 3.12/petsc4py 3.12: both print
commands show data type of complex128. Could anybody please help me? Thanks!
import petsc4py
import sys
petsc4py.init(sys.argv)
from petsc4py import PETSc
da=PETSc.DA().create(sizes=[2,2,2],dof=1,stencil_type=0,stencil_width=1,boundary_type=1)
da_1 = da.createGlobalVec()
print(petsc4py.PETSc.ComplexType)
print(da_1.getArray().dtype)
Best regards,
Peng Sun
--
What most experimenters take for granted before they begin their experiments is
infinitely more interesting than any results to which their experiments lead.
-- Norbert Wiener
https://www.cse.buffalo.edu/~knepley/<http://www.cse.buffalo.edu/~knepley/>
--
What most experimenters take for granted before they begin their experiments is
infinitely more interesting than any results to which their experiments lead.
-- Norbert Wiener
https://www.cse.buffalo.edu/~knepley/<http://www.cse.buffalo.edu/~knepley/>
