CROCO w/ GPU compilation error

compilation-installation
1

Hi, I wanto to compile croco-v2.1.3 so I’ve added #define openacc in cppdefs.h and selectec nvfortran as a compiler in jobcomp.

The following error appears. Any idea how to solve it?

nvfortran -c -g -fast -r8 -i4 -mcmodel=medium -Mbackslash -I/usr/include -acc -Minfo=accel get_bulk_.f -o get_bulk.o
set_bulk_tile:
2056, Generating update device(wspd(:,:))
2079, Generating update device(wspd(:,:),vwnd(:,:),uwnd(:,:),tair(:,:),rhum(:,:),radlw(:,:),prate(:,:),radsw(:,:),srflx(:,:))
cpp -traditional -DLinux -DXLF -P -I/usr/include -ICROCOFILES/AGRIF_INC bulk_flux.F > bulk_flux_.f1
python3 ./change_loops.py bulk_flux_.f1 bulk_flux_.tmp
cat bulk_flux_.tmp | ./mpc > bulk_flux_.f && \rm bulk_flux_.tmp
FORTRAN STOP
nvfortran -c -g -fast -r8 -i4 -mcmodel=medium -Mbackslash -I/usr/include -acc -Minfo=accel bulk_flux_.f -o bulk_flux.o
NVFORTRAN-S-0155-DO loop expected after ACC LOOP (bulk_flux_.f: 636)
0 inform, 0 warnings, 1 severes, 0 fatal for bulk_flux_tile
make: *** [Makedefs:15: bulk_flux.o] Error 2

Regards,

Andrés

2

Hi @AndresSepulveda
Remove this line: L-733 (!$acc loop seq ). It’s not needed here.

Try again to compile. pls let me know.
Thank you! best regards.

3

I was able to compile thanks. Now I have a problem reading the .in file

  Boundary File:  croco_bry.nc

Initial State File: croco_ini.nc Record: 1
Restart File: croco_rst.nc nrst = 89280 rec/file: 0
History File: croco_his.nc Create new: T nwrt =**** rec/file = 0
1 ntsavg Starting timestep for the accumulation of output
time-averaged data.
2880 navg Number of timesteps between writing of time-averaged
data into averages file.
Averages File: croco_avg.nc rec/file = 0

READ_INP ERROR while reading block with keyword ‘primary_history_fields’.

READ_INP ERROR: A total of 1 configuration errors discovered.

which is wierd because it is pretty standard

primary_history_fields: zeta UBAR VBAR U V wrtT(1:NT)
T T T T T 40T
auxiliary_history_fields: rho Omega W Akv Akt Aks Bvf Visc3d Diff3d HBL HBBL Bostr Bustr Bvstr Wstr Ustr Vstr Shfl Swfl rsw rlw lat sen HEL
F F T F T F F F F T T T F F T T T T T 10*T

4

Hi,

in or nml I don’t think it will change but read_inp.F can.
Thank you with best regards.

5

The is there. It got lost in the copy paste. Seems it doesn’t like them. I’ve added just two T’s (for temperature and salinity) and removed the othet 10*T

Now it crashes with something related to the bulk_flux.F (I am using ONLINE)

FATAL ERROR: data in PRESENT clause was not found on device 1: name=stau(imin:imax,jmin:jmax) host:0x117f581a0
file:/home/andres/croco-v2.1.3/Tunisia_GPU/Compile/bulk_flux_.f bulk_flux_tile line:546

my bulk_flux.F file is from the latest oficial release

6

Hi,
after closer look at it, I find it.
add after this line (line 73) its only in v2.1.3 as well as the master branch. but master have few new var (aer, cer, etc).

# ifdef CFB_STRESS
!$acc&               ,stau
# endif

Please check its working or not (as you mention some of the card).
let me know.
Thank you with best regards.

7

No luck yet, this error shows

nvfortran -c -g -fast -r8 -i4 -mcmodel=medium -Mbackslash -I/usr/include -acc -Minfo=accel get_bulk_.f -o get_bulk.o
set_bulk_tile:
2164, Generating update device(wspd(:,:))
2187, Generating update device(wspd(:,:),vwnd(:,:),uwnd(:,:),tair(:,:),rhum(:,:),radlw(:,:),prate(:,:),radsw(:,:),srflx(:,:))
cpp -traditional -DLinux -DXLF -P -I/usr/include -ICROCOFILES/AGRIF_INC bulk_flux.F > bulk_flux_.f1
python3 ./change_loops.py bulk_flux_.f1 bulk_flux_.tmp
cat bulk_flux_.tmp | ./mpc > bulk_flux_.f && \rm bulk_flux_.tmp
FORTRAN STOP
nvfortran -c -g -fast -r8 -i4 -mcmodel=medium -Mbackslash -I/usr/include -acc -Minfo=accel bulk_flux_.f -o bulk_flux.o
NVFORTRAN-S-0038-Symbol, stau, has not been explicitly declared (bulk_flux_.f: 497)
NVFORTRAN-S-0050-Assumed size array, stau, is not a dummy argument (bulk_flux_.f: 522)
NVFORTRAN-W-0119-Redundant specification for stau (bulk_flux_.f: 522)
0 inform, 1 warnings, 2 severes, 0 fatal for bulk_flux_tile
make: *** [Makedefs:15: bulk_flux.o] Error 2s

Here is the modification done

!$acc declare create( cff  , cff2
!$acc&               ,rho0i, cpi  , RH   , Hlv     , wspd0
!$acc&               ,TseaC, TseaK, Qsea , Tvstar
!$acc&               ,TairC, TairK, Q    , rhoAir  , Bf
!$acc&               ,delW , delT , delQ , ddelW , ddelT , ddelQ
!$acc&               ,Cd   , Ch   , Ce   , iexns , iexna
!$acc&               ,Wstar, Tstar, Qstar, Wstar0  , Tstar0, Qstar0
!$acc&               ,psi_u, ZoLu, psi_t, ZoLt    , patm
!$acc&               ,hfsen, hflat, hflw , upvel   , evap
# ifdef CFB_STRESS
!$acc&               ,stau
# endif
!$acc&               )
8

Hi,
sorry. it’s my apology.
you need to add it here in line - 122 after.

!$acc declare create( aer, cer
# ifdef CFB_STRESS
!$acc&               ,stau
# endif
!$acc&               )

And revert your earlier change to the line-73.
ordering problem. because declared here.
Thank you with best regards.

9

Thanks for all the help, a problem persists.

allocated block device:0x7fbd1fe00000 size:2097152 thread:1
deleted block device:0x7fbbfe000000 size:69069312 threadid=1
FATAL ERROR: data in PRESENT clause was not found on device 1: name=stau(imin:imax,jmin:jmax) host:0x116f12f20
file:/home/andres/croco-v2.1.3/Tunisia_GPU/Compile/bulk_flux_.f bulk_flux_tile line:546

Fri 10 Jul 2026 09:20:53 PM UTC

Here are the files that I’ve modified

bulk_flux.f (35.2 KB)

bulk_flux_.f (40.2 KB)

10

Now it runs!

Seems the IF has to be declared this way

!$acc declare create( aer, cer )

# ifdef CFB_STRESS

!$acc declare create( stau )

# endif

(solution by Claude Code)

1 Like
11

Ok. Thank you.
It seems cpp -traditional pass through mpc.
best regards.