15%
10.09.2013
domains. Assuming that your application is scalable or that you might want to tackle larger data sets, what are the options to move beyond OpenMP? In a single word, MPI (okay, it is an acronym). MPI
14%
06.11.2012
options, and you notice that some simple options are a choice of MPI and BLAS libraries. Of course, you also need to choose a compiler. The task seems simple enough until you lay out the possible choices
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12.09.2018
, it offers the possibility of a shared filesystem using SSH, which can help with security because only port 22 needs to be open (which you need for MPI application communications, anyway). SSHFS also uses SFTP
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18.07.2012
In the first two Warewulf articles, I finished the configuration of Warewulf so that I could run applications and do some basic administration on the cluster. Although there are a plethora of MPI
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16.07.2015
Programmers use a number of compilers, libraries, MPI libraries/tools, and other tools to write applications. For example, someone might code with OpenACC, targeting GPUs and Fortran, whereas another person
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08.12.2020
service (DVS)
Nonuniform memory access (NUMA) properties
Network topology
Message passing interface (MPI) communication statistics (currently you have to use Intel MPI or MVAPICH2)
Power
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26.01.2012
processes (such as an HPC application). One way to use this tool is to run it on all of the compute nodes that are running a particular application, perhaps as part of a job script. When the MPI job runs, you
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03.07.2013
to understand the MPI portion, and so on. At this point, Amdahl’s Law says that to get better performance, you need to focus on the serial portion of your application.
Whence Does Serial Come?
The parts
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15.01.2014
(MPI), provisioning, and monitoring can also limit the data received and frequency at which it is gathered. As previously mentioned, oversubscribed networks are another source of bottlenecks, so you need
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21.04.2016
for certain usage modules or system architectures, especially with parallel MPI job execution.
Singularity for the Win!
Kurtzer, who works at Lawrence Berkeley National Laboratory (LBNL), is a long-time open
