From: Peter Korsgaard <peter@korsgaard.com>
To: buildroot@busybox.net
Subject: [Buildroot] [PATCH 1/2] openblass: drop SSE_GENERIC target
Date: Sun, 01 Apr 2018 12:38:57 +0200 [thread overview]
Message-ID: <878ta7rz26.fsf@dell.be.48ers.dk> (raw)
In-Reply-To: <8e50e37d-589f-6ae7-5bd3-feef97bf05d7@mind.be> (Arnout Vandecappelle's message of "Sun, 1 Apr 2018 11:51:52 +0200")
>>>>> "Arnout" == Arnout Vandecappelle <arnout@mind.be> writes:
> On 01-04-18 10:46, Peter Korsgaard wrote:
>> Fixes #10856
>>
>> The SSE_GENERIC target fails to build with a "sgemm_kernel.o: No such file
>> or directory" error. Several upstream bug reports exist for this:
>>
>> https://github.com/xianyi/OpenBLAS/issues/502
>> https://github.com/xianyi/OpenBLAS/issues/685
>>
>> In both cases, upstream suggests using a different target definition
>> instead. E.G. from issue 685:
>>
>> You may use NORTHWOOD on x86: make TARGET=NORTHWOOD that uses SSE2
>> instructions. It's very hard to find non-SSE2 x86 CPUs today. For x86-64
>> use the PRESCOTT target
>>
>> So drop the SSE_GENERIC target. The only x86_64 variant we support not
>> covered by a more specific openblas target is the default variant, nocona.
> Actually, I think BR2_x86_corei7_avx is not covered either. And BR2_x86_jaguar.
corei7_avx is:
default "SANDYBRIDGE" if BR2_x86_corei7_avx
But jaguar indeed isn't. Jaguar is in the bobcat family so I'll add a
default "BOBCAT" entry for it:
https://en.wikipedia.org/wiki/List_of_AMD_microprocessors#Bobcat_core_architecture_(APU)
> These openblas targets really are an unmaintainable mess...
Indeed :/
--
Bye, Peter Korsgaard
next prev parent reply other threads:[~2018-04-01 10:38 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-01 8:46 [Buildroot] [PATCH 1/2] openblass: drop SSE_GENERIC target Peter Korsgaard
2018-04-01 8:46 ` [Buildroot] [PATCH 2/2] openblas: bump version to v0.2.20 Peter Korsgaard
2018-04-01 10:04 ` Thomas Petazzoni
2018-04-01 10:28 ` Peter Korsgaard
2018-04-01 10:45 ` Peter Korsgaard
2018-04-01 9:51 ` [Buildroot] [PATCH 1/2] openblass: drop SSE_GENERIC target Arnout Vandecappelle
2018-04-01 10:38 ` Peter Korsgaard [this message]
2018-04-01 10:45 ` Peter Korsgaard
2018-04-08 15:08 ` Peter Korsgaard
2018-04-11 15:46 ` Peter Korsgaard
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