We motivate and discusses some features of a language
model combining data-parallel features from HPF
with an explicitly MIMD (SPMD) programming style.  This model, which
we call the "HPspmd" model, is designed to facilitate calls to
libraries for parallel programming with distributed data.

The slow uptake of HPF is partly attributed to immaturity in current
compilers.  But it seems that some programmers are equally comfortable
with the explicit SPMD programming style.  Many higher-level parallel
programming environments and libraries assume this style (ScaLAPACK,
PetSc, Kelp, the Global Arrays, etc).  Unfortunately the library-based
SPMD approach lacks the uniformity and elegance of HPF.

The class of programming languages we discuss borrow ideas
from HPF, but relinquish other principles.
An explicitly MIMD programming model is complemented by syntax
for representing distributed arrays.  These features
can make calls to various data-parallel libraries about as convenient
as calling an array intrinsic function in Fortran 90.