1.1.1. 4.6.1 Generating Python code

Whenever Kepler actor is created, associated Python actor is generated inside $HOME/kepler/itm/python directory. You can use this code inside your Python based workflow. However, there are few things to remember.

Make sure to use:

IMAS

Most recent PyUAL release

Make sure to import module from

/work/imas/core/pyual

Make sure to use most recent release of FC2K.

In case you can't use most recent release of FC2K,

the lowest version that supports Python code generation is: 4.2.6

module switch fc2k/4.2.6 # at ITER

 

1.1.2. 4.6.2 Sample code

Make sure to check how to generate actor, based on compiled library. You can find this information here:

IMAS
4.2 FC2K - Example 1 - Embedding Fortran codes into Kepler (no IDSes)

4.3 FC2K - Example 2 - Embedding Fortran code into Kepler (IDSes)

 

1.1.3. 4.6.3 How to use generated code

After generating the code, you can use it inside your Python workflow.

Let's take a simple case

subroutine noids(input, output)
implicit none
integer,parameter :: DP=kind(1.0D0)

integer, intent(in):: input
integer, intent(out):: output


write(0,*) 'Entering subroutine noids. Input value: ',input

output = input * 2

write(0,*) 'End Subroutine'

return
end subroutine

You can compile it using following Makefile

F90=gfortran
COPTS= -g -fno-second-underscore -fPIC

all: noids.o libnoids

libnoids: noids.o
	ar -rvs libnoids.a noids.o

noids.o: noids.f90
	$(F90) $(COPTS) -c -o $@ $^

clean:
	rm -f *.o *.a

And then, after generating FC2K actor, you can access actor following way, from the Python

# the name of the actor (defined in fc2k)
from actors import noids

result = noids(1)

print 'Hello! This is what I got: ', result
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