Hi Lu,
There are obviously many ways of achieving a bandwidth of 5GByte/s, but one
example would be to set --sys-clock to 700 Mhz (~1.43 ns per clock period), and
assuming 64 byte transactions you would then get 64 / 8 + 1 cycles per
transaction, hence 64 bytes per 9 cycles or ~12.86 ns, which gives you ~4.98
Gbyte/s.
Note that the bus is effectively a crossbar, so you have this bandwidth per
master/slave pair.
Andreas
From: Lu Bai <[email protected]<mailto:[email protected]>>
Reply-To: gem5 users mailing list
<[email protected]<mailto:[email protected]>>
Date: Tuesday, August 27, 2013 9:42 PM
To: gem5 users mailing list <[email protected]<mailto:[email protected]>>
Subject: [gem5-users] how to change the speed of bus
Hi all,
I'm trying to modify the speed of bus. I'm running the benchmark on full system
mode, and the bus speed I need is 5GB/s.
In the "Bus.py" file, there are only two parameters that can be modified:
header_cycles=Param.Cycles(1, "cycles of overhead per transaction")
width=Param.Unsigned (8, "bus width(bytes)")
Can anyone tell me that is that possible to get a bus with speed of 5GB/s by
modifying the "Bus.py"?
Thanks in advance,
Lu
-- IMPORTANT NOTICE: The contents of this email and any attachments are
confidential and may also be privileged. If you are not the intended recipient,
please notify the sender immediately and do not disclose the contents to any
other person, use it for any purpose, or store or copy the information in any
medium. Thank you.
ARM Limited, Registered office 110 Fulbourn Road, Cambridge CB1 9NJ, Registered
in England & Wales, Company No: 2557590
ARM Holdings plc, Registered office 110 Fulbourn Road, Cambridge CB1 9NJ,
Registered in England & Wales, Company No: 2548782
_______________________________________________
gem5-users mailing list
[email protected]
http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users
