[test] Add CPU memory latency test

[sekelle]

No description provided.

[vkarak]

@jenkins-cscs retry daint

[jgphpc]

Should lower reference be smaller ?

  * Stage directory: /scratch/snx3000tds/piccinal/reframe/stage/dom/gpu/PrgEnv-cray/CPULatencyTest
  * Failing phase: performance
  * Reason: performance error: failed to meet reference: latencyL2=1.15884, expected 3.44 (l=3.4055999999999997, u=4.3344)

I need to retest this one:

FAILURE INFO for CPULatencyTest
  * System partition: dom:gpu
  * Environment: PrgEnv-gnu
  * Stage directory: /scratch/snx3000tds/piccinal/reframe/stage/dom/gpu/PrgEnv-gnu/CPULatencyTest
  * Job type: batch job (id=None)
  * Maintainers: ['SK']
  * Failing phase: run
  * Reason: job error: [jobid=None] could not find enough nodes: required 1, found 0

[jgphpc]

There seems to be an issue with --exec-policy=async and self.num_tasks = 0 (independent of this PR). Running without --exec-policy=async gives:

FAILURE INFO for CPULatencyTest
  * Environment: PrgEnv-cray
  * Reason: performance error: failed to meet reference: latencyL2=1.21557, expected 3.65 (l=3.6134999999999997, u=4.599)
------------------------------------------------------------------------------
  * Environment: PrgEnv-gnu
  * Reason: performance error: failed to meet reference: latencyL2=1.21533, expected 3.65 (l=3.6134999999999997, u=4.599)

[jgphpc]

discussed offline

[victorusu]

lgtm

[codecov-io]

Codecov Report

Merging #874 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #874   +/-   ##
=======================================
  Coverage   91.71%   91.71%           
=======================================
  Files          78       78           
  Lines       10339    10339           
=======================================
  Hits         9482     9482           
  Misses        857      857

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[codecov-io]

Codecov Report

Merging #874 into master will increase coverage by 0.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #874      +/-   ##
==========================================
+ Coverage   91.66%   91.68%   +0.01%     
==========================================
  Files          78       78              
  Lines       10350    10350              
==========================================
+ Hits         9487     9489       +2     
+ Misses        863      861       -2

Impacted Files	Coverage Δ
reframe/frontend/dependency.py	97.47% <0%> (+1.68%)	⬆️

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[jgphpc]

'ault:intel', 'ault:amdvega' and 'tave:compute' are not in the ci

[vkarak]

Thanks @sebkelle1, nice work! I have a couple of suggestions for some side improvements.

[vkarak]

@sebkelle1 Can you address my PR comments, so that we can merge this one?

[pep8speaks]

Hello @sebkelle1, Thank you for updating!

Cheers! There are no PEP8 issues in this Pull Request!Do see the ReFrame Coding Style Guide

Comment last updated at 2019-09-13 22:56:21 UTC

[vkarak]

@jenkins-cscs retry dom