Spatiality Plot

Once the dependencies and DXT Explorer have been installed:

dxt-explorer -s DARSHAN_FILE_COLLECTED_WITH_DXT_ENABLE.darshan
Spatiality Plot

This will generate the base spatiality.html plot. Spatiality refers to the file offsets between consecutive I/O accesses. Typical spatial access patterns are contiguous, strided, or random. The spatiality.html plot shows the spatiality of the accesses in file made by each rank. Contextual information link Rank, Operation, Duration, Size, Offset, Lustre OST can also be seen by hovering over a request.

This is the expected console output when calling DXT Explorer:

2022-11-02 12:58:22,979 dxt - INFO - FILE: <Filename> (ID <File ID>)
2022-11-02 12:58:22,979 dxt - INFO - generating dataframes
2022-11-02 12:58:26,681 dxt - INFO - generating interactive spatiality for: <Filename>
2022-11-02 12:58:30,826 dxt - INFO - SUCCESS: <Path to the newly created spatiality.html>
2022-11-02 12:58:30,834 dxt - INFO - SUCCESS: <Path to the newly created index.html>
2022-11-02 12:58:30,834 dxt - INFO - You can open the index.html file in your browser to interactively explore all plots

Interactive examples of DXT traces collected from FLASH, E2E, and OpenPMD are available in the companion repository of our PDSW’21 paper.