<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
</head>
<body>
<div class="BodyFragment"><font size="2"><span style="font-size:11pt;">
<div class="PlainText">Hi,<br>
<br>
I am test-driving hardware for a new machine for my group and having a hard time making sense the output of the stream test:<br>
<br>
I am attaching the results and my reference (xeon 8260 nodes on QueenBee 3 at LONI).<br>
<br>
If I understand correctly, on the AMD node, the memory bandwidth is saturated with a single core. Is this expected?<br>
The comparison is not totally fair in that QB3 uses intel MPI and MPI compilers, whereas the AMD node uses mvapich2, which I compiled with the following options: ./configure --prefix=/home/amduser/Development/mvapich2-2.3.5-gcc9.3 --with-device=ch3:nemesis:tcp
--with-rdma=gen2 --enable-cxx --enable-romio --enable-fast=all --enable-g=dbg --enable-shared-libs=gcc --enable-shared<br>
<br>
Am I doing something wrong on the AMD node?<br>
<br>
Regards,<br>
Blaise<br>
<br>
<br>
<br>
</div>
</span></font></div>
<div class="BodyFragment"><font size="2"><span style="font-size:11pt;">
<div class="PlainText"><br>
-- <br>
A.K. & Shirley Barton Professor of Mathematics<br>
Adjunct Professor of Mechanical Engineering<br>
Adjunct of the Center for Computation & Technology<br>
Louisiana State University, Lockett Hall Room 344, Baton Rouge, LA 70803, USA<br>
Tel. +1 (225) 578 1612, Fax +1 (225) 578 4276 Web <a href="http://www.math.lsu.edu/~bourdin">
http://www.math.lsu.edu/~bourdin</a><br>
<br>
</div>
</span></font></div>
</body>
</html>