DG, thanks for the parameter file.
During today's call we also saw that you mentioned that you encountered a segmentation fault when using one ghost point. Do you have a backtrace? Did you try running the code in a debugger to check which variable is causing it?
Cheers, Bruno
Il giorno gio 21 apr 2022 alle ore 17:32 Garrison, David Garrison@uhcl.edu ha scritto:
I don’t use standard Einstein Toolkit thorns. I also don’t use refinement levels in Carpet. Please see attached for an example. The error occurs when I change the ghost zone size to 1.
-DG
-- David Garrison, Ph.D. Associate Dean for the College of Science and Engineering, Professor and Founding Chair of Physics University of Houston-Clear Lake Bayou 3611/STEM 2252 Houston, TX 77058
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On Apr 21, 2022, at 9:24 AM, Bruno Giacomazzo bruno.giacomazzo@unimib.it wrote:
DG, if you could share the parameter file that would be useful in order to try reproducing the error with standard Einstein Toolkit thorns. I do not see any problem with the lines of code you posted in the email.
Do you get the same problem also when using Carpet without refinement levels?
Best regards, Bruno
Il giorno gio 31 mar 2022 alle ore 19:17 Garrison, David < Garrison@uhcl.edu> ha scritto:
Hello,
It is a custom code so I am attaching the part I used to do the reductions instead.
handle = CCTK_ReductionHandle("average"); ierr = CCTK_Reduce(cctkGH, -1, handle, 1, CCTK_VARIABLE_REAL, &scale_factor, 1, CCTK_VarIndex("MHD_Analysis::aa_out_avg")); ierr = CCTK_Reduce(cctkGH, -1, handle, 1, CCTK_VARIABLE_REAL, &utime, 1, CCTK_VarIndex("MHD_Analysis::univ_age"));
-DG
On Mar 31, 2022, at 9:21 AM, Bruno Giacomazzo bruno.giacomazzo@unimib.it wrote:
DG, could you share the parameter file you are using? So that we may have a better look at the problem.
Thanks, Bruno
Il giorno mer 30 mar 2022 alle ore 20:52 Garrison, David < Garrison@uhcl.edu> ha scritto:
Hello,
Whenever I set the number of ghost zones to 1, I get segmentation faults from my reduction operations. This wasn’t an issue with Pugh or when I use 2 or more ghost zones with Carpet. Has anyone else had this problem?
-DG
-- David Garrison, Ph.D. Interim Associate Dean for the College of Science and Engineering, Professor and Founding Chair of Physics University of Houston-Clear Lake Bayou 3611/STEM 2252 Houston, TX 77058
BAYOU: 281-283-3717 STEM : 281-283-3796 https://www.uhcl.edu/science-engineering/faculty/garrison-david http://www.uhcl.edu/physics
"If we knew what it was we were doing, it would not be called research, would it?" — Albert Einstein.
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-- David Garrison, Ph.D. Interim Associate Dean for the College of Science and Engineering, Professor and Former Chair of Physics University of Houston-Clear Lake Bayou 3611 Houston, TX 77058
Tel: 281-283-3796 Fax: 281-283-3709 http://sce.uhcl.edu/garrison http://www.uhcl.edu/physics
"If we knew what it was we were doing, it would not be called research, would it?" ‹ Albert Einstein.
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Prof. Bruno Giacomazzo Department of Physics University of Milano-Bicocca Piazza della Scienza 3 20126 Milano Italy
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There are only 10 types of people in the world: Those who understand binary, and those who don't