[Advcomparch] (no subject)

Nikolaos Peitsinis el04711 at mail.ntua.gr
Fri May 1 19:28:46 EEST 2009


¼óïí áöïñÜ ôçí áíáöïñÜ

-ÈÝëïõìå ôï IPC ãéá ôá benchs, áõôü óçìáßíåé üôé êÜíïõìå
IPC=instructions/cycles ãéá ôá benchmarks ìüíï; Ôá cycles åßíáé áêñéâþò
1_000_000_000.

-Ôá miss rates åßíáé ìüíï ãéá read, ìüíï ãéá write Þ êáé ãéá ôá 2; ÈÝëïõìå
äçëáäÞ äýï ãñáöéêÝò, ìßá ãéá êÜèå miss rate óå êÜèå l1 cache Þ ìßá êïéíÞ;

-Ïé ãñáöéêÝò èá ãßíïõí îå÷ùñéóôÜ ãéá êÜèå level 1 cache;

-Ôá óôáôéóôéêÜ ðáßñíïíôáé ãéá user, supervisor Þ total;

-Ðüóåò åßíáé áêñéâþò ïé ãñáöéêÝò ðïõ ÷ñåéáæüìáóôå;

-Ïé ãñáöéêÝò èá áíáöÝñïíôáé óôá åîÞò: bench, IPC Þ miss rate, cache ìüíï; Ïé
ìåôáâëçôÝò ìáò äåí åßíáé ìüíï áõôÝò, áí Ý÷ïõìå óôïí Üîïíá × ôá associativity
êáé size, óôïí Üîïíá ø ôé èá âÜëïõìå; Ôá IPC Þ miss rates áíÜëïãá ìå ôç
ãñáöéêÞ ðïõ èÝëïõìå; Ôá äéáöïñåôéêÜ benchmarks êáé ïé äéáöïñåôéêÝò cache ðïý
ïñßæïíôáé;



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