April 25, 2018 Dataset Open Access

Kelling, Jeffrey; Juckeland, Guido

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{
  "url": "https://rodare.hzdr.de/record/16", 
  "identifier": "https://doi.org/10.14278/rodare.16", 
  "creator": [
    {
      "affiliation": "Helmholtz-Zentrum Dresden-Rossendorf", 
      "name": "Kelling, Jeffrey", 
      "@type": "Person"
    }, 
    {
      "affiliation": "Helmholtz-Zentrum Dresden-Rossendorf", 
      "name": "Juckeland, Guido", 
      "@id": "https://orcid.org/0000-0002-9935-4428", 
      "@type": "Person"
    }
  ], 
  "datePublished": "2018-04-25", 
  "keywords": [
    "Scorep", 
    "Vampir", 
    "Tracing", 
    "Profiling"
  ], 
  "name": "Profiling of RT-PICLS Code", 
  "@id": "https://doi.org/10.14278/rodare.16", 
  "sameAs": [
    "https://www.hzdr.de/publications/Publ-27417"
  ], 
  "license": "https://creativecommons.org/licenses/by/4.0/legalcode", 
  "@type": "Dataset", 
  "@context": "https://schema.org/", 
  "distribution": [
    {
      "fileFormat": "zip", 
      "@type": "DataDownload", 
      "contentUrl": "https://rodare.hzdr.de/api/files/bbd4d9ce-0fdb-42a2-84a1-b5ecebf4d2a7/tracefile_rtpicls.zip"
    }
  ], 
  "description": "<p>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.</p>\n\n<p>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.</p>\n\n<p>Different file systems were evaluated for storing the output:</p>\n\n<ul>\n\t<li><strong>bigdata</strong>: the high-performance file system of the cluster based on GPFS.</li>\n\t<li><strong>nfs</strong>: a loop-mounted EXT4 image mounted to the current compute node via NFS.</li>\n\t<li><strong>scr</strong>: the local scratch file-system of the compute node.</li>\n\t<li><strong>tmpfs</strong>: a virtual filesystem, physically located in the main memory of the compute node.</li>\n</ul>\n\n<p>The trace files that were used to compile the referenced report are collected in this upload.</p>"
}