[Cryptech Tech] Status of RSA timing tests etc

[Joachim Strömbergson]

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Aloha!

Pavel Shatov wrote:
> Now Paul's idea to run the cores at FMC clock is very interesting,
> and I believe it's viable. It needs a minor bit of investigation with
> a scope, which I'm going to do next week.
> 
> As far as I understand, all the cores we currently have can now run
> at least at 100 MHz, so there should be no problem running them at 90
> MHz, and there's no reason to clock them slower than that.

How about that we do this in two steps:

(1) Increase the sys_clk for the cores to 100 MHz as discussed and
decided on before.

(2) Investigate and try and run the cores synchronously with the 90 MHz.

The point I see by doing this is that if we do (1) and don't see major
performance improvements, we should know a bit more about where the
bottleneck is hiding. Doing (1) should also confirm that we can run the
cores at 90 MHz with no problems. So it would be a bit of a pipe-clean
for (2). (1) _should_be an easy thing to do. Lets not wait anymore.


Pavel, I've asked a few times now, can you please confirm or correct the
suggested changes to the sys_clk clock generator parameters? And is the
changes to those parameters the only place we need to update. No changes
in the ucf-file?

- -- 
Med vänlig hälsning, Yours

Joachim Strömbergson - Assured AB
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