Shared memory in /var/run instead of /tmp

Question

I use shared memory segment on a diskless node.
This shared memory segment are stored in /tmp.
Is there a way to put them in a "memory based" directory, as /var/run (solaris 8) instead of
the disk-based directory

Answer 1

My problem was especially to change toe location
of the shared memory on file system. I succeed
with FIFO but not with shared memory. I
don't find any solution.
concerning the definition of memory base vs. file
based I have no clue but the following extract from
docset
------[Extract from solaris 8 documentation]-----
The /var/run File System
A new TMPFS-mounted file system, /var/run, is the
repository for temporary system files that are not
needed across system reboots in this Solaris release
and future releases. The /tmp directory continues to
be repository for non-system temporary files.
Because /var/run is mounted as a memory-based file
system rather than a disk-based file system, updates
to this directory do not cause unnecessary disk
traffic that would interfere with systems running
power management software.
The /var/run directory requires no administration.
You may notice that it is not unmounted with the
umount -a or the umountall command.
For security reasons, /var/run is owned by root.