On 2/11/26 12:24 PM, Sandra Loosemore wrote:
On 2/10/26 11:20, Jerry D wrote:
Dear all, as requested,
See attached patch 9 of 13
More documentation comments:
diff --git a/gcc/fortran/invoke.texi b/gcc/fortran/invoke.texi
index 6e8e13a982b..c544037033a 100644
--- a/gcc/fortran/invoke.texi
+++ b/gcc/fortran/invoke.texi
@@ -2350,6 +2350,15 @@ memory.
Warning: Choosing a large shared memory size may produce large coredumps!
+@env{GFORTRAN_IMAGE_RESTARTS_LIMIT}: On certain platforms, esp. MacOS, the
+shared memory segment needs to be placed on the same (virtual) address in every
+image or synchronisation primitives do not work as expected. Unfortunately are
Please use American spelling, e.g. synchronization.
+some OSes somewhat arbitrary on when they can do this. When the OS is not able
s/are some OSes/some operating systems are/
+to fullfill the request, then the image aborts itsself and is restarted by the
s/fullfill/fulfill/
s/itsself/itself
+supervisor untill the OS complies. This environment variable limits the total
s/untill/until/
+number of restarts of all images having an issue with shared memory segment
+placement. The default value is 4000.
+
The shared memory coarray library internally uses some additional environment
variables, which will be overwritten without notice or may result in failure to
start. These are: @code{GFORTRAN_IMAGE_NUM}, @code{GFORTRAN_SHMEM_PID} and
-Sandra
Duly noted and thanks for comments.
I will update.
Jerry
