74%
27.08.2014
conducted. In this article we profile I/O at the block layer to help you make the best storage decisions.
... /O profiler, or ioprof.
ioprof
When I discovered that understanding the output of blktrace was not so easy, I looked around for some “postprocessing” tools and came across ioprof. The website introduces ... conducted. In this article we profile I/O at the block layer to help you make the best storage decisions.
... I/O Profiling at the Block Level
27%
19.05.2014
with my /home/layton
directory on my local system (host = desktop
). I also access an HPC system that has its own /home/jlayton
directory (the login node is login1
). On the HPC system I only keep some
22%
06.05.2014
to big data, casino operators can create granular customer profiles. The Flamingo Hotel of Caesars Entertainment in Las Vegas alone employs 200 big data analysts. Specialized analytics solutions
23%
26.02.2014
). In fact, that’s the subject of the next article.
The Author
Jeff Layton has been in the HPC business for almost 25 years (starting when he was 4 years old). He can be found lounging around at a nearby
22%
12.02.2014
or sar+ksar). Others gather metrics for clusters (e.g., Ganglia or Cacti), and some come with plotting tools built-in using the RRDtool database. Some tools are specifically for performance profiling
27%
15.01.2014
toward improving application performance (profiling). However, how do you profile across a cluster, and how do you make it part of a “job”? I think this is a developing area of monitoring, and one
23%
03.07.2013
of the code. You are using asynchronous data transfers, you limit the number of collective operations, you are using a very low latency and high bandwidth network, you have profiled your application
27%
30.01.2013
(Listing 3).
Listing 3: Configuring Lmod init Scripts
[root@test1 profile.d]# ln -s /usr/local/lmod/lmod/init/profile /etc/profile.d/modules.sh
[root@test1 profile.d]# ln -s /usr
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16.01.2013
/yum.conf
# . /etc/profile.d/modules.sh
# module load openmpi-x86_64
# ompi_info | grep -i grid
MCA ras: gridengine (MCA v2.0, API v2.0, Component v1.5.4)
# echo "module load openmpi-x86_64" >> /etc/profile
80%
19.12.2012
your application, develop a complete profile of it.
Profiling and Tracing
Two main types of tools can be used to develop a complete profile of an application. One is called profiling and the other ... Profiling Is the Key to Survival