Intel® Fortran Compiler 18.0 Developer Guide and Reference
Statement: Performs a synchronization of all images. It takes the following form:
SYNC ALL[([STAT=stat-var][, ERRMSG=err-var])]
stat-var |
Is a scalar integer variable in which the status of the synchronization is stored. |
err-var |
Is a scalar default character variable in which an error condition is stored if such a condition occurs. |
STAT= and ERRMSG= can appear in either order, but only once in a SYNC ALL statement.
Execution on an image, for example, C, of the segment following the SYNC ALL statement is delayed until each other image has executed a SYNC ALL statement as many times as has image C.
The segments that executed before the SYNC ALL statement on an image, precede the segments that execute after the SYNC ALL statement on another image.
In the following example, image 5 reads data and transmits the data to other images:
REAL :: W[*]
SYNC ALL
IF (THIS_IMAGE()==5) THEN
READ (*,*) W
DO I = 6, NUM_IMAGES()
W[I] = W
END DO
END IF
...
SYNC ALL