[ET Trac] [Einstein Toolkit] #1718: MemSpeed: Re-use allocated memory

Einstein Toolkit trac-noreply at einsteintoolkit.org
Sat Aug 4 13:06:34 CDT 2018

#1718: MemSpeed: Re-use allocated memory
  Reporter:  Erik Schnetter         |      Owner:  (none)
      Type:  enhancement            |     Status:  new
  Priority:  minor                  |  Milestone:
 Component:  EinsteinToolkit thorn  |    Version:  development version
Resolution:                         |   Keywords:

Comment (by Erik Schnetter):

 MemSpeed needs to allocate sufficiently much memory to ensure that the
 measurement is not handled by the L3 cache. By default, it allocates 1/4
 of 1 NUMA node worth of memory. There is an option to allocate even more
 memory so that the inter-NUMA memory speed can also be measured.

 If you run one or two instances of MemSpeed simultaneously, there should
 be no swapping. I do this regularly on my laptop.

 It should be possible to limit this further to e.g. at most 10x the last-
 level cache size.

Ticket URL: <https://trac.einsteintoolkit.org/ticket/1718#comment:2>
Einstein Toolkit <http://einsteintoolkit.org>
The Einstein Toolkit

More information about the Trac mailing list