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Old 08-01-2003, 04:19 AM
Stephen Williams
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Default Re: OT: EDA tools on AMD-64?

Joe wrote:

> Any news about support of EDA tools running on AMD-64 platform?
> (Especially backend stuffs which likely to take up more memory).
> I only heard that Cadence and VCS (Synopsys) will support it.
> Any more? Is it available now or should I wait? Any performance
> figures?
>


Icarus Verilog supports AMD-64.

Also, you can generally run ix86 Linux binaries on Linux/x86-64
without a hitch (and without a performance penalty.)

My 1.8GHz Opteron is nearly twice as fast (Icarus Verilog) as
the 1.8GHz Athon, for the same price. I have seen huge simulations
that take more then 4Gig run to completion. Very nice.

--
Steve Williams "The woods are lovely, dark and deep.
steve at icarus.com But I have promises to keep,
http://www.icarus.com and lines to code before I sleep,
http://www.picturel.com And lines to code before I sleep."

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Old 08-01-2003, 01:36 PM
David Jones
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Default Re: OT: EDA tools on AMD-64?

In article <[email protected]>,
Stephen Williams <[email protected]> wrote:
>My 1.8GHz Opteron is nearly twice as fast (Icarus Verilog) as
>the 1.8GHz Athon, for the same price. I have seen huge simulations
>that take more then 4Gig run to completion. Very nice.


Is this due to Icarus exploting the 64-bit architecture (really, just
the increased registers - nothing else will cut the runtime) or does
the Opteron run all 32-bit code twice as fast as well?

I'd like to get my hands on an Opteron but they ain't selling 'em in
the local stores just yet.
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Old 08-01-2003, 07:32 PM
Stephen Williams
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Default Re: OT: EDA tools on AMD-64?

David Jones wrote:
> In article <[email protected]>,
> Stephen Williams <[email protected]> wrote:
>
>>My 1.8GHz Opteron is nearly twice as fast (Icarus Verilog) as
>>the 1.8GHz Athon, for the same price. I have seen huge simulations
>>that take more then 4Gig run to completion. Very nice.

>
>
> Is this due to Icarus exploting the 64-bit architecture (really, just
> the increased registers - nothing else will cut the runtime) or does
> the Opteron run all 32-bit code twice as fast as well?


There is some, but not much in Icarus Verilog that takes advantage
of 64bit words, so I have no reason to doubt that I would get the
same if I ran as a 32bit program. Can't say I bothered with the
experiment.

Of course, the 64bit really pays when your designs are so big
the simulations take lots of address space.

> I'd like to get my hands on an Opteron but they ain't selling 'em in
> the local stores just yet.


Got mine here: www.polywell.com
It's not obvious from their web page, but you can get them in
workstation clothing. Mine cost on the order of $5,000 w/o monitor.

--
Steve Williams "The woods are lovely, dark and deep.
steve at icarus.com But I have promises to keep,
http://www.icarus.com and lines to code before I sleep,
http://www.picturel.com And lines to code before I sleep."

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