Parallélisme

Référence de l'expérience :

• http://forge.ipsl.jussieu.fr/nemoyao/wiki/exp1 -- expérience de référence 1 (3D)
• number of threads = 16

Parallelization profiling:

The number of threads used for the parallelism is: 16.

• The number of total loops is 37 containing 82 total modules.
• The number of parallelized loop is 28 containing 59 modules,
• the percentage of parallel loops is 75.6757%
• and the percentage of modules that have been parallelized is 71.9512%.
• There are 5 modules not present in an order directive.

In the backward procedure:

• The number of atomic update in the parallel regions is 109, the total number of update is 428.
• The percentage of atomic update is 25.4673%

Résultats

m1qn3: output mode is 6

number of iterations: 15

number of simulations: 52

realized relative precision on g: 0.55E-01

norm of x = 0.19348639E+04

f = 0.17069031E+03

norm of g = 0.70167274E+01

résultat détaillé :

• séquentiel : source:/trunk/scripts/script_outputs/run_batch_sinobad_seq.sh.o332@43​
• parallèle : source:/trunk/scripts/script_outputs/run_batch_sinobad.sh.o331@42​

run duration

• sequential (old version): 994s
• sequential (new version): 330s
• parallèle : 206s
• speedup : 1,6 (amdahl (à la louche sur le nb de modules parallélisés)= 3,1)