Yep... you can check the actual temp in linux with lmsensors, or
otherwise remotely through the xport using roach_monitor.py. If
they're in an air-conditioned room, it _should_ be fine.
The PAPER ROACH PPCs have run at 60degC for extended periods without
trouble, but much above that and
Hi All.
Just a few comments on bus performance.
The processor bus is 16 bits at 66 MHz (or 83), so the theoretical maximum
is 133 MB/s.
There are 3 cycles bus overhead per transaction (for registering etc in
FPGA) and an extra two or so for for accessing the register/bram. So that is
roughly a
So commenting out all the lines in /etc/syslog.conf and then rebooting
seems to have done the trick. I now see ~7.8MB/s read times. Yay!
Muchas gracias!
On Wed, Apr 28, 2010 at 8:00 AM, Jason Manley jasonman...@gmail.com wrote:
Syslog flushes all logs to disk as they happen (synchronous
Hi, Jason,
Glad you made it back to SA OK!
On Apr 28, 2010, at 8:00 , Jason Manley wrote:
The logs you're seeing are likely from the kernel itself, as BORPH
logs every bus transaction. A kernel recompile is required to
remove this entirely. But you can configure what is logged to disk
by
Hi, Mel,
On Apr 28, 2010, at 9:54 , melvyn wright wrote:
You should be getting around 7MegaBytes/s across that bus.
56 Mb / 16 b 4 MHz bus clock frequency
Good suggestion re kernel, but don't understand the significance of
the 56 Mb
I omitted the /s in 56 Mb/s. 7 megabytes/s == 56
ROACH bus runs at 66MHz (or 83MHz if you overclock it to boot config
H). I agree that the 3.5MB/s is miserable performance considering what
it should be capable of achieving. I suspect these bottlenecks are
mostly BORPH related. I also recall an extended bus handshake being
mentioned for
On a semi-related note, I've notice the CPU running pretty hot when I
read data fast from the FPGA and make packets out of it. Do we need
heatsinks for the CPU?
On Wed, Apr 28, 2010 at 10:44 PM, Jason Manley jasonman...@gmail.com wrote:
ROACH bus runs at 66MHz (or 83MHz if you overclock it to
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