Analysis of the MPI-IO Optimization Levels with the PIOViz Jumpshot Enhancement.

Autor: Hutchison, David, Kanade, Takeo, Kittler, Josef, Kleinberg, Jon M., Mattern, Friedemann, Mitchell, John C., Naor, Moni, Nierstrasz, Oscar, Pandu Rangan, C., Steffen, Bernhard, Sudan, Madhu, Terzopoulos, Demetri, Tygar, Doug, Vardi, Moshe Y., Weikum, Gerhard, Cappello, Franck, Herault, Thomas, Dongarra, Jack, Ludwig, Thomas, Krempel, Stephan
Zdroj: Recent Advances in Parallel Virtual Machine & Message Passing Interface (9783540754152); 2007, p213-222, 10p
Abstrakt: With MPI-IO we see various alternatives for programming file I/O. The overall program performance depends on many different factors. A new trace analysis environment provides deeper insight into the client/server behavior and visualizes events of both process types. We investigate the influence of making independent vs. collective calls together with access to contiguous and non-contiguous data regions in our MPI-IO program. Combined client and server traces exhibit reasons for observed I/O performance. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index