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Re: 64-bit

From: Thomas Hruska <thruska_at_cubiclesoft.com>
Date: 2005-12-19 22:10:42 CET

Stefan Küng wrote:
> Thomas Hruska wrote:
>> Stefan Küng wrote:
>>> Hi,
>>> The 1.3.0 release isn't that long away anymore. So I started
>>> wondering if we should try to get a working 64-bit version of TSVN to
>>> be included in the official 1.3.0 release.
>>> I've already got OpenSSL successfully compiled for x64.
>> The last time I checked, OpenSSL 64-bit (0.9.8 series) STILL didn't
>> have assembler optimizations. Without the assembler optimizations,
>> 32-bit builds with assembler support will run circles around the
>> 64-bit builds even on a 64-bit platform (when assembler support is
>> added back in, then the story will be quite different). So, yes,
>> OpenSSL 64-bit CAN be built, the question is whether or not to
>> actually do it. Here's the relevant text from the INSTALL.W64 file:
>> "Caveat lector
>> -------------
>> As of moment of this writing Win64 support is classified "initial"
>> for the following reasons.
>> - No assembler modules are engaged upon initial 0.9.8 release."
> I've read that too. But with a good optimizing compiler, there won't be
> much of a speed reduction without assembler.
> What do you mean with "run circles"? And why should 32-bit builds even
> try to load *our* openssl dll? The dll is in our own install dir, and
> that's the only place it belongs (read the openssl docs: they clearly
> state that you must not put it in Windows or System32 or the Win64
> equivalent of these dirs).
> Stefan

I was talking about 32-bit builds of _OpenSSL_ with assembler modules
will outperform 64-bit OpenSSL builds without assembler modules by at
least a factor of 10 - no matter how good your optimizing compiler is.
I wasn't referring to other apps. Sorry for the confusion.

Thomas Hruska
CubicleSoft President
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Received on Mon Dec 19 22:15:14 2005

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