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Hi,<br>
<br>
Here is some description and performance results for the new Lustre
ADIO driver. You might be interested.<br>
<br>
The main purpose of the new lustre adio driver is to collect the small
size I/O requests into
fewer number of larger ones according to Lustre's striping feature with
low overhead automatically. We
also provide some hints for performance tuning.<br>
<br>
In the following graph, the recent FLASH I/O benchmarking result shows
that the new
driver performs much better than the old one, especially for a
large-scale system.<br>
In this test,
FLASH I/O blocksize is 4*4*4 that means each 3 clients write 40KB,
40.5KB and 42KB respectively. The I/O
operation iteration (nvar) is set to 1024.<br>
<br>
<img alt="" src="cid:part1.04050106.06020809@sun.com" height="193"
width="590"><br>
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--></style>HTH,<br>
LiuYing<br>
<br>
<br>
emoly.liu wrote:
<blockquote cite="mid:49110B1A.5030201@sun.com" type="cite">sending to
lustre-devel@ as well
<br>
<br>
Hello,
<br>
<br>
A new Lustre ADIO driver for MPICH2-1.0.7 is available now, which is
co-developed by SUN Lustre group and Oak Ridge National Lab. (The patch
is attached.)
<br>
<br>
Any feedback and performance results are welcomed.
<br>
<br>
Thanks,
<br>
LiuYing
<br>
<br>
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<br>
<br>
<pre class="moz-signature" cols="72">--
Best regards,
LiuYing
System Software Engineer, Lustre Group
Sun Microsystems ( China ) Co. Limited
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