[Beowulf] Definition of HPC
hahn at mcmaster.ca
Thu Apr 18 11:46:01 PDT 2013
> If you have looked into it, sudo echo 3 > /proc/sys/vm/drop_caches is well nigh impossible.
> But you can run an suid C program which does effectively the same job.
"sudo sysctl -w vm.drop_caches=3" is the smarter way to do it,
or a fixed executable with sudo. or a fixed executable with suid.
or better yet: have the system do it when appropriate,
since inappropriate drop_caches could cause problems.
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