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Dear Mikhail,<br>
<br>
QE makes intensive usage of external Math libraries: BLAS, LAPACK,
FFT. <br>
Most of the computational workload is performed by those libraries.<br>
Codes (as well as QE) can advantage of the SIMD units available as
far as your software stack enable so:<br>
<br>
1) O.S. support. For instance, see at the "flags" line of the
/proc/cpuinfo for Linux OS<br>
<br>
2) Compile your code and external libraries with proper options (see
compiler manual) <br>
<br>
3) Make use of third-party pre-compiled libraries highly optimized
for given architectures (MKL, ACML, ESSL, etc...)<br>
<br>
Kind Regards,<br>
<br>
Ivan<br>
<br>
On 15/10/2013 17:43, Mikhail Ozhgibesov (Dr) wrote:
<blockquote cite="mid:CE8383A1.2E9%25mikeozh@ntu.edu.sg" type="cite">
<div>Dear developers,</div>
<div><br>
</div>
<div>Does the quantum ESPRESSO explicitly utilises advantages of
SSE and/or AVX technologies?</div>
<div><br>
</div>
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<div>
<p class="MsoNormal" style="margin: 0in 0in 0.0001pt;
font-size: 11pt; ">Best regards,<o:p></o:p></p>
<p class="MsoNormal" style="margin: 0in 0in 0.0001pt;
font-size: 11pt; "> Mikhail</p>
</div>
</div>
</blockquote>
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