April 25, 2018 Dataset Open Access

Kelling, Jeffrey; Juckeland, Guido

Dublin Core Export

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  <dc:creator>Kelling, Jeffrey</dc:creator>
  <dc:creator>Juckeland, Guido</dc:creator>
  <dc:date>2018-04-25</dc:date>
  <dc:description>It was observed, that the RT-PICLS code ran by FWKT on the hypnos cluster was producing an unusual amount of system load, according to Ganglia metrics. Since this may point to an IO-problem in the code, this code was analyzed more closely.

RT-PICLS was run with additionally provided input data on 64 CPU cores (AMD Opteron) in a single node of the hypnos cluster. Score-P 4.0 with IO-tracing support was used for profiling and tracing of the application. A developer version of Vampir 9.2 [3] enabled graphical analysis of the traces.

Different file systems were evaluated for storing the output:


	bigdata: the high-performance file system of the cluster based on GPFS.
	nfs: a loop-mounted EXT4 image mounted to the current compute node via NFS.
	scr: the local scratch file-system of the compute node.
	tmpfs: a virtual filesystem, physically located in the main memory of the compute node.


The trace files that were used to compile the referenced report are collected in this upload.</dc:description>
  <dc:identifier>https://rodare.hzdr.de/record/16</dc:identifier>
  <dc:identifier>10.14278/rodare.16</dc:identifier>
  <dc:identifier>oai:rodare.hzdr.de:16</dc:identifier>
  <dc:relation>urn:urn:nbn:de:bsz:d120-qucosa-224404</dc:relation>
  <dc:relation>url:https://www.hzdr.de/publications/Publ-27417</dc:relation>
  <dc:relation>doi:10.14278/rodare.15</dc:relation>
  <dc:relation>url:https://rodare.hzdr.de/communities/fwc</dc:relation>
  <dc:relation>url:https://rodare.hzdr.de/communities/rodare</dc:relation>
  <dc:rights>info:eu-repo/semantics/openAccess</dc:rights>
  <dc:rights>https://creativecommons.org/licenses/by/4.0/legalcode</dc:rights>
  <dc:subject>Scorep</dc:subject>
  <dc:subject>Vampir</dc:subject>
  <dc:subject>Tracing</dc:subject>
  <dc:subject>Profiling</dc:subject>
  <dc:title>Profiling of RT-PICLS Code</dc:title>
  <dc:type>info:eu-repo/semantics/other</dc:type>
  <dc:type>dataset</dc:type>
</oai_dc:dc>