Intel® Fortran Compiler 17.0 Developer Guide and Reference
Causes the compiler to flag procedures and data objects in the source file with the offload attribute target(mic). This option only applies to Intel® MIC Architecture. Option -qoffload-attribute-target is the replacement option for -offload-attribute-target, which is deprecated.
Only available on Intel® 64 architecture targeting Intel® MIC Architecture
Linux: | -qoffload-attribute-target=target-name |
macOS: | None |
Windows: | /Qoffload-attribute-target:target-name |
target-name |
Is a specific target. The only supported value for this argument is mic. |
OFF |
The compiler does not flag procedures and data objects in the source file with the offload attribute target(mic). |
This option causes the compiler to flag procedures and data objects in the source file with the offload attribute target(mic).
This option is similar to using the required individual directive ATTRIBUTES OFFLOAD:MIC to set the attribute target(mic) for all procedures and data objects in the source file.
Individual directive ATTRIBUTES OFFLOAD:MIC embedded in the source takes precedence over this option.
None
The following example shows the [q or Q]offload-attribute-target option. The module variable t_glob is updated only on the host; the module variable t_priv is updated only on the target. The [q or Q]offload-attribute-target option is used to flag all of the global procedures and global variables with the target(mic) attribute so individual ATTRIBUTES directives do not need to be inserted in the sources for the global procedures and global variables that are available on both the host and the target.
t.F90
=========
program sample
use m, only : t_glob, glob_func
integer :: i
!dir$ offload target(mic) out(i, t_glob)
i = glob_func()
write(*, '( "main: t_glob = ",i0," i = ",i0)' ) t_glob, i
end program sample
m.F90
=========
module m
integer :: t_glob = 65
public :: glob_func
integer :: t_priv = 43
private :: priv_func, t_priv
contains
integer function priv_func ()
! Increment on target only
# ifdef __MIC__
t_priv = t_priv + 1
# endif
priv_func = t_priv / 2
end function priv_func
integer function glob_func ()
integer :: j
j = priv_func()
write(*, '( "glob_func: t_priv = ",i0," j = ",i0)' ) t_priv, j
! Increment on target only#
ifdef __MIC__
t_glob = t_glob + 1
# endif
glob_func = t_glob / 2
end function glob_func
end module mThe command-lines for compiling the source files are:
Linux*:
$ ifort -c m.F90 -qoffload-attribute-target=mic
$ ifort m.o t.F90 -o t.exeWindows*:
$ ifort /c m.F90 /Qoffload-attribute-target:mic
$ ifort m.obj t.F90 /exe:t.exeThe output of t.exe will look similar to the following:
glob_func: t_priv = 44 j = 22 main: t_glob = 66 i = 33