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Message
From: zhang_lsv@y...<zhang_lsv@y...>
Date: Tue Dec 21 01:13:23 CET 2004
Subject: [openrisc] OpenRisc Benchmarking
Hi, Matjaz,I found if I set the Flash Memory delayr = 2 (original is 10), the number
of cycles can be heavily decreased. But is such setting reasonable ?
Why is the default value 10 ?
And How to get the number of instructions totally ?
thanks
----- Original Message -----
From: Matjaz Breskvar<phoenix@o...>
To:
Date: Mon Dec 20 23:18:45 CET 2004
Subject: [openrisc] OpenRisc Benchmarking
> * zhang_lsv@y... (zhang_lsv@y...) wrote:
> > I borrowed the Makefile from the testbench in the 'sim'
> package. It
> > seems not using O2 option there. Now I added -O3, and the
> number of
> > cycles has decreased to 7 Million, which is still 8-9 times
> larger than
> > others. Do any other options I can play with ?
> >
> > In addition to the number of cycles, how can I know the
> "number of
> > total instructions" so that I can compute
> "IPC"?
> try also -fomit-frame-pointer and be sure configure memory delays
> to 0
> in the sim.cfg.
> the code you have looks simple enough so i'd investigate the
> assembler
> to chack for hardware muls and the the code seams reasonable...
> regards,
> p.
>
>
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