Search found 39 matches

by keckler
Thu Jul 27, 2017 4:24 pm
Forum: Bugs, problems, questions & feeback
Topic: Fatal error in function CollectBurnData
Replies: 8
Views: 5849

Re: Fatal error in function CollectBurnData

I see, thanks for the input. There is not a physics-based reason for having multiple temperatures of the same isotope in my calculations, but it happens because of a script that I am using to handle fuel shuffling. As fuel is moved from lower temperature regions to higher temperature regions between...
by keckler
Wed Jul 26, 2017 5:59 pm
Forum: Bugs, problems, questions & feeback
Topic: Fatal error in function CollectBurnData
Replies: 8
Views: 5849

Re: Fatal error in function CollectBurnData

I just wanted to followup on this thread with my experience. I recently ran a job that gave back the same error: Composition must be in ascending order This error was thrown using version 2.1.29 in MPI mode. My burned material definitions had multiple versions of the same isotopes at different tempe...
by keckler
Wed Jul 26, 2017 4:57 pm
Forum: Parallelization
Topic: memory errors when increasing number of mpi tasks
Replies: 5
Views: 2296

Re: memory errors when increasing number of mpi tasks

Okay, so for now I would disregard my second post above. It seems like this was probably an anomaly, and you are probably correct that an older job was still running somehow and writing into the same file. That was weird, but probably not the root of my issue. After asking around and trying some mor...
by keckler
Fri Jul 21, 2017 11:12 pm
Forum: Parallelization
Topic: memory errors when increasing number of mpi tasks
Replies: 5
Views: 2296

Re: memory errors when increasing number of mpi tasks

Further update: I just noticed in one of my most recent jobs that there is some very random stuff in my output file. Out of nowhere the typical output block that I see during active transport cycles is smack in the middle of the calculation initialization... ... Warning message from function CheckNu...
by keckler
Fri Jul 21, 2017 10:27 pm
Forum: Parallelization
Topic: memory errors when increasing number of mpi tasks
Replies: 5
Views: 2296

memory errors when increasing number of mpi tasks

I am running a transport/depletion calculation with the coupled neutron/gamma mode right now with version 2.1.29. I am running with 600,000 particles per cycle and 520 cycles. I need this many particles due to very poor fission source convergence. When I run this calculation without MPI, but using t...
by keckler
Wed Jul 05, 2017 7:32 pm
Forum: Gamma transport
Topic: Tallies not working when particle type specified
Replies: 2
Views: 1572

Re: Tallies not working when particle type specified

All of the tallies work correctly now with the new definitions.

Thanks for the quick and simple reply!
by keckler
Mon Jul 03, 2017 11:50 pm
Forum: Gamma transport
Topic: Tallies not working when particle type specified
Replies: 2
Views: 1572

Tallies not working when particle type specified

I am running some calculations in the neutron/photon coupled mode and taking tallies of the power over a lattice. It seems that something is wrong with the way that tallies are working in this mode. I am specifying a few different tallies, and some of them work, while others do not. When in the stan...
by keckler
Mon Jul 03, 2017 4:31 pm
Forum: Gamma transport
Topic: Data read error when performing coupled gamma/neutron calcs
Replies: 5
Views: 2528

Re: Data read error when performing coupled gamma/neutron cals

Thanks Toni and Jaakko for the suggestions. I removed all instances of Fermium from my photon xsdata file and the calculation seems to be going fine now. Is this mentioned anywhere that photon transport will not work for Z > 99? I don't believe I ever saw it, and I would imagine that most people wou...
by keckler
Fri Jun 30, 2017 11:55 pm
Forum: Gamma transport
Topic: Data read error when performing coupled gamma/neutron calcs
Replies: 5
Views: 2528

Data read error when performing coupled gamma/neutron calcs

I am trying to convert an input deck of mine (which was working before) from just neutron transport to coupled photon/neutron transport. I have created a new photon xs library and converted it using the script xsdirconvert.pl. Everything seems to be going just fine during the data reading, but then ...