[test] Extend DGEMM test for using MKL

[lucamar]

I have added the build and run of DGEMM using PrgEnv-intel with MKL.
The performance values are still the same, I have tested Dom for the time being and the performance fits the current range.
I have inserted a new tag benchmark, therefore the performance thresholds might change with respect to diagnostic.

[pep8speaks]

Hello @lucamar, Thank you for updating!

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

Comment last updated on February 08, 2019 at 15:38 Hours UTC

[lucamar]

Note that you need to run reframe -P normal on Dom to get the node assignment correctly.

[codecov-io]

Codecov Report

Merging #662 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #662   +/-   ##
=======================================
  Coverage   91.84%   91.84%           
=======================================
  Files          77       77           
  Lines        9366     9366           
=======================================
  Hits         8602     8602           
  Misses        764      764

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 383e672...04562f2. Read the comment docs.

[victorusu]

I just have a couple of comments. But overall lgtm

[teojgo]

lgtm

[vkarak]

I have a minor comment. Other than that it lgtm.

[vkarak]

@victorusu Can you recheck and approve?

[vkarak]

I will move the test to microbenchmarks

[victorusu]

I will merge, as soon as the tests pass.