[J3] Question about coarray implementations

[Jeff Hammond]

Is anyone aware of a Fortran implementation of the coarray model where images are not OS processes?

Furthermore, are there any implementations that create images at some point after entry into the main program, such as the first time a coarray is allocated, or an image query function is called?

I am familiar with OpenCoarrays and Intel Fortran, both of which use MPI, and Cray Fortran, which uses a PGAS runtime that is interoperable with MPI, but no other implementations.

Thanks,

Jeff