Search found 24 matches

by cgentry7
Thu Mar 31, 2016 3:05 pm
Forum: Bugs, problems, questions & feeback
Topic: Poisoning calculation by "set poi 1"
Replies: 14
Views: 15267

Re: Poisoning calculation by "set poi 1"

I would think the best approach would be to replace the current variables with the fixed calculations and have the previous calculation approach as a second set of variables (or vice versa). Others might have a use for the previous approach.
by cgentry7
Fri Mar 04, 2016 8:32 pm
Forum: Bugs, problems, questions & feeback
Topic: Poisoning calculation by "set poi 1"
Replies: 14
Views: 15267

Re: Poisoning calculation by "set poi 1"

When I use following: mat Xe135 1.0 54135.09c 1 mat Sm149 1.0 62149.09c 1 det flx du 0 de 2 det xe dm fuel dr 102 Xe135 de 2 dt 3 flx det sm dm fuel dr 102 Sm149 de 2 dt 3 flx and scale the results by the ratio of CELL_VOL / FUEL_VOL I get the microscopic cross-sections that correspond to INF_XXYYY_...
by cgentry7
Thu Mar 03, 2016 5:04 pm
Forum: Bugs, problems, questions & feeback
Topic: Poisoning calculation by "set poi 1"
Replies: 14
Views: 15267

Re: Poisoning calculation by "set poi 1"

I was curious as to if any effort was being made to include edits for Xe / Sm / Pm/ I microscopic cross-sections that correspond to INF_XXYYY_MACRO_ABS / C_XX where XX is the Element ID and YYY is the isotope number. My understanding is that the reported INF_XXYYY_MICRO_ABS in the *res.m file still ...
by cgentry7
Thu Dec 03, 2015 6:28 pm
Forum: Bugs, problems, questions & feeback
Topic: Number of Depletion Regions effecting Max NPG / MPI ratio
Replies: 17
Views: 14108

Re: Number of Depletion Regions effecting Max NPG / MPI ratio

It appears that the revised reinitrng.c file you provided me worked. So the problem was related to the random number seed exceeding the range of a long integer. I'm not sure if you wanted to add the revisions to this post or not, so I left them off. Sorry for the delay in response, I just wanted to ...
by cgentry7
Thu Dec 03, 2015 6:19 pm
Forum: Input
Topic: Microscopic Scattering Matrix
Replies: 1
Views: 3663

Microscopic Scattering Matrix

I just wanted to confirm, but SERPENT 2 still cannot produce a microscopic scattering matrix, correct?

Thanks,
Cole
by cgentry7
Thu Nov 12, 2015 8:41 pm
Forum: Bugs, problems, questions & feeback
Topic: Number of Depletion Regions effecting Max NPG / MPI ratio
Replies: 17
Views: 14108

Re: Number of Depletion Regions effecting Max NPG / MPI ratio

Running with batching set to 10 produced the "Unable to initiate self-sustaining chain reaction" error. I dropped the batching number to 5 and got the following warning: ***** Thu Nov 12 12:34:18 2015 (seed = 1447349464, MPI task = 877) Warning message from function SampleReaction: Failed to sample ...
by cgentry7
Thu Nov 12, 2015 5:52 pm
Forum: Bugs, problems, questions & feeback
Topic: Number of Depletion Regions effecting Max NPG / MPI ratio
Replies: 17
Views: 14108

Re: Number of Depletion Regions effecting Max NPG / MPI ratio

That's correct, internode parallelization using MPI and intranode parallelization using OPENMP. The output files are too large to attach to the post so I'm going to email them.
by cgentry7
Wed Nov 11, 2015 8:12 pm
Forum: Bugs, problems, questions & feeback
Topic: Number of Depletion Regions effecting Max NPG / MPI ratio
Replies: 17
Views: 14108

Re: Number of Depletion Regions effecting Max NPG / MPI ratio

I'm using "sep 1", so only single depletion regions for each pin, but each pin depleted independently.
by cgentry7
Wed Nov 11, 2015 4:16 pm
Forum: Bugs, problems, questions & feeback
Topic: Number of Depletion Regions effecting Max NPG / MPI ratio
Replies: 17
Views: 14108

Re: Number of Depletion Regions effecting Max NPG / MPI ratio

I get this immediately. Usually before 20 or so skipped generations. If I run about 500 nodes with 16 cores per node it runs fine. When I go back up to 1200 nodes with 16 cores per node, the simulation dies before getting through the skipped generations. If I run with no depletion, I can run 1200 no...
by cgentry7
Mon Nov 09, 2015 3:24 pm
Forum: Bugs, problems, questions & feeback
Topic: Number of Depletion Regions effecting Max NPG / MPI ratio
Replies: 17
Views: 14108

Re: Number of Depletion Regions effecting Max NPG / MPI ratio

Yes, it does. The results appear to be appropriate. If I turn depletion off I can run with many more MPI tasks. It is only when I'm depleting that this becomes a problem.