Performance differences between RH6 and RH7

Description

Decreased performances in the OTB applications have been observed in the cluster of CNES between RH6 and RH7 : if the type of the output is not a float RH7 takes more time than RH6.

Results :

• RH7 :

Writing output/5_UpdateSynthesis_R1.tif...: 100% [**************************************************] (4e+01 seconds)
Writing output/5_UpdateSynthesis_R2.tif...: 100% [**************************************************] (1e+01 seconds)
 
real	0m51.818s
user	3m9.529s
sys	0m9.358s 

• RH6

Writing output/5_UpdateSynthesis_R1.tif...: 100% [**************************************************] (3e+01 seconds)
Writing output/5_UpdateSynthesis_R2.tif...: 100% [**************************************************] (1e+01 seconds)

real	0m43.846s
user	2m24.699s
sys	0m6.023s

Steps to reproduce

The application used in the example can be found here : UpdateSynthesis

./otbcli_UpdateSynthesis -inr1 4_CP_R1.tif -xml SENTINEL2A_20180418-104512-083_L2A_T32ULV_C_V2-2/SENTINEL2A_20180418-104512-083_L2A_T32ULV_C_V2-2_MTD_ALL.xml -cld 4_cld10.tif -wat 4_wat10.tif -snw 4_snw10.tif -weightl2a 4_WeightTotal.tif -outr1 4_UpdateSynthesis_R1.tif -prevproductr1 3_UpdateSynthesis_R1.tif -inr2 4_CP_R2.tif -outr2 4_UpdateSynthesis_R2.tif -prevproductr2 3_UpdateSynthesis_R2.tif -progress 1

Configuration information

OTB > 6.2