Process killed for large areas

[jortecal]

Dear all,

I have been trying to produce the cheesemask for a circular area of radius 3 degrees following steps 1 to 5 of the cookbook (https://erosita.mpe.mpg.de/dr1/eSASS4DR ... _cookbook/) and whenever I get to step 5, the one using erbackmap, the process gets killed after few minutes of computation without any explanation. I am doing it for a region centered at the center of the LMC, and doing the same for a smaller region i.e. a radius of 1.5 degree, it works properly. I am not sure if it is a problem of my computer not being able to handle the computation or something else.

This is what I get:

Code: Select all

erbackmap image="image_fromselreg_comb_LMC_rad3deg_rebin40.fits" expimage="expmap_srcreg_comb_LMC_rad3deg_rebin40.fits" boxlist="boxlist_srcreg_comb_LMC_rad3deg_rebin40.fits" detmask="detmask_srcreg_comb_LMC_rad3deg_rebin40.fits" bkgimage="bkg_map_srcreg_comb_LMC_rad3deg_rebin40.fits" emin=500 emax=10000 cheesemask="cheesemask_srcreg_comb_LMC_rad3deg_rebin40.fits" cheesemask_flag="Y" maxcut=0.7
 erbackmap: 1.26.2 eSASS4DR1 feb 01 15:54:38 2024
 erbackmap/ero_cifsl: Accessing cal file tm1_2dpsf_190220v03.fits
Killed

Let me know if I can provide more information to make it clearer.
Thanks,
Jorge

[JeremySanders]

Hi Jorge

This seems like it ran out of memory to me.

Is this Linux? If so, you could try running dmesg (may need sudo) and see whether the OOM Killer (out of memory killer) killed the process. If so, you'll need a machine with more memory or swap, or use smaller regions. It could also be quotas that are imposed on your user. You could also try running the command while running "top" to see whether the memory usage (RES) is large.

Cheers

Jeremy