GPU610/Team DAG

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Team DAG

Team Members

1. Chris Schreiber, Team Lead

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Progress

Assignment 1

Project selection discussed with Chris Szalwinski. Configuring local working environment and hardware for working with the CERN project source code.

Profile of the Drive_God_lin program utilizing only 1 core/thread on the CPU (forcing serialized execution of all OpenMP Pragmas in the C+ and Fortran code) showed 4 primary targets to rewrite using CUDA kernels. All 4 of these procedure calls are part of the Fortran library included for executing the analysis. There are some portions of the 'main' method in the Drive_God_lin.c code which include a parallel OpenMP pragma, and this could also be tuned for some improvement for initialization of the data arrays, but may not provide improvement for the reading of the data file. Methods most likely to offer parallel improvements via CUDA kernels (Top 5 based on Flat Profile).

Each sample counts as 0.01 seconds.

 %   cumulative   self              self     total           

time seconds seconds calls ms/call ms/call name

47.66      9.99     9.99   314400     0.03     0.03  zfunr_

30.45     16.37     6.38      524    12.18    12.18  ordres_

10.84     18.64     2.27   314400     0.01     0.01  cfft_

 3.53     19.38     0.74   314400     0.00     0.04  tunelasr_

 3.34     20.08     0.70     1048     0.67    13.42  spectrum_