Search found 11 matches

by C.H.M. Broeders
Wed Feb 15, 2012 12:59 am
Forum: Bugs, problems, questions & feeback
Topic: Required hardware resources for burnup
Replies: 1
Views: 4325

Required hardware resources for burnup

Being generally very interested in nuclear reactor fuel burnup I am starting now applying serpent2 for burnup. I selected the example. serpent/Author_examples-1.1.7/PWR_BURNUP/pwr and did some trials with current versions of serpent1 and serpent2. For serpent2 I used the openmp parallel version with...
by C.H.M. Broeders
Fri Feb 10, 2012 1:30 am
Forum: Parallelization
Topic: openmp issues
Replies: 7
Views: 3423

Re: openmp issues

If applied well (?) using "set repro 0" in my case improves calculation time from 1.41 to 1.37 minutes (on MANDRIVA2011.0 64 bit at home)
Further in my opinion 15-17% overhead for parallelization with linear process number speedup is a good implementation.
CB
by C.H.M. Broeders
Fri Feb 10, 2012 12:28 am
Forum: Parallelization
Topic: openmp issues
Replies: 7
Views: 3423

Re: openmp issues

Most LINUX computer now have hardware with at least 2 CPUs. This means that the openmp option may save computation time by about 40%. Is there any argument not to apply openmp?
CB
by C.H.M. Broeders
Thu Feb 09, 2012 1:10 pm
Forum: Parallelization
Topic: openmp issues
Replies: 7
Views: 3423

Re: openmp issues

Thanks for the very effective communication. I just performed some tests with VVER example on Debian Lenny 64 bit with following results for "calculation time": 1) No openmp: 2.89 minutes 2) Openmp no "-omp 2" input (1 processor)": 3.38 minutes (x1.17) 3) Openmp with "-omp 2" input (2 processors)": ...
by C.H.M. Broeders
Thu Feb 09, 2012 2:25 am
Forum: Parallelization
Topic: openmp issues
Replies: 7
Views: 3423

openmp issues

After successful installation of serpent2.1.1 version without parallel options, I am trying to create parallel capabilities with openmp on MANDRIVA2011.0 64 bit computer. After installing openmp and gomp packages compilation of serpent2 with default options for openmp in Makefile is successful. Howe...
by C.H.M. Broeders
Wed Feb 08, 2012 1:52 pm
Forum: Bugs, problems, questions & feeback
Topic: Problems in 32-bit systems?
Replies: 2
Views: 4531

Re: Problems in 32-bit systems?

Is there a decission to stop with 32 bit serpent2 development?
See "input" problem discussion.
CB
by C.H.M. Broeders
Tue Feb 07, 2012 2:27 pm
Forum: Input
Topic: question concerning input
Replies: 8
Views: 22565

Re: question concerning input

Now results without boron match within error bars.
Any idea how to proceed with 32 bit problem?
by C.H.M. Broeders
Tue Feb 07, 2012 2:09 pm
Forum: Input
Topic: question concerning input
Replies: 8
Views: 22565

Re: question concerning input

Running this VVER problem on DEBIAN Lenny 64 bit ends without trivial problems, but k-eff values are significantly different, using jef311 library data (1.34 for sss2 vs 1.27 for sss).
Inputs are exactly the same in same directory with sss and sss2 in $PATH (on /usr/local/bin)
by C.H.M. Broeders
Tue Feb 07, 2012 12:59 am
Forum: Input
Topic: question concerning input
Replies: 8
Views: 22565

Re: question concerning input

First info: I am doing this tests on MANDRIVA 2010.2 32Bit LINUX system. Second: I installed the update 1. Results are the same when I did not make a mistake.. Third: I read your comment here. Then I recompiled update 1 with error messages below: Is it possible to inform by e-mail about postings her...
by C.H.M. Broeders
Fri Feb 03, 2012 11:49 pm
Forum: Input
Topic: question concerning input
Replies: 8
Views: 22565

question concerning input

Hi all, this evening I started working with serpent2-beta code. Installation without parallelization was straightforward without any problems. Next step was to repeat "Author_examples-1.1.7/VVER" testproblem with serpent version 1.1.16. Here I had to do the command "export SERPENT_DATA=/home/opt/ser...