On Wed, Dec 14, 2016 at 12:47 PM, Erik Bray <erik.m.b...@gmail.com> wrote:
> On Wed, Dec 14, 2016 at 12:42 PM, Dima Pasechnik <dimp...@gmail.com> wrote:
>> Hi Erik,
>>
>> there are bugs in 7.4 (which is the version your Windows version is based
>> on, right?)
>> that break SAGE_FAT_BINARY.
>> See https://trac.sagemath.org/ticket/21850 and
>> https://trac.sagemath.org/ticket/21849
>> and https://trac.sagemath.org/ticket/21772
>>
>> Did you backport these?
>
> No, I did not.  Thanks for pointing these out--at least one of these
> is the likely culprit then.  For example I note in the .debug_info
> section that givaro was built with AVX support, which Peter's CPU does
> not have.  I'll backport these fixes and make a new build.

Perhaps a thing in the future to do will be to provide a "fat"
installer, with different builds of some packages (and only those
packages where it applies) for different CPU architectures.  The
easiest thing to do would be to just provide entire separate
installers for different CPUs, and we might start with that.  But
really the installer should automatically select the correct binaries
for the target system and users shouldn't have to think about it.

But first it would be best to see what the demand is like before
putting a lot of effort into it.

>> On Wednesday, December 14, 2016 at 11:04:01 AM UTC, Erik Bray wrote:
>>>
>>> On Wed, Dec 14, 2016 at 11:33 AM, Peter Luschny <peter....@gmail.com>
>>> wrote:
>>> >> Could you tell me what kind of CPU you have?  And remind me, was this
>>> >> running in a VM (it shouldn't matter but I'm curious)?
>>> >
>>> >
>>> > No, no, it ran on bare iron.
>>>
>>> Okay, so there are at least a few instructions my CPU has that yours
>>> doesn't, such as the SSSE3 instruction set (as opposed to SSE3).
>>> Still hard to narrow it down much though.
>>
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