what does “TBD” mean refer to “!$acc host_data” at http://www.pgroup.com/resources/accel.htm#spec?
Attempts to compile simple program result in the following error message
PGF90-S-0155-A data clause for a variable appears within another region with a data clause for the same variable a
PROGRAM main INTEGER :: a(1024) !$acc data copy(a) ! <Populate a(:) on device as before> !$acc host_data use_device(a) CALL dbl_cuda(a) !$acc end host_data !$acc end data END PROGRAM main