Le 17/01/2017 à 00:09, Volker Braun a écrit : > You can force a particular architecture with > > OPENBLAS_CONFIGURE="TARGET=PRESCOTT" make -p openblas > > Yes! it works, thanks.
Otherwise there are solutions when the vitual machine is run by KVM/libvirt:
1) if you add
<kvm>
<hidden state='on'/>
</kvm>
in the definition of the vm, it will appear like the underlying machine,
2)
Define the type of cpu:
<cpu mode='custom' match='exact'>
<model fallback='allow'>SandyBridge</model>
</cpu>
yours
t.
>
> On Monday, January 16, 2017 at 11:54:56 AM UTC+1, tdumont wrote:
>
>
> I tried to install 7.5.1 from source on an Ubuntu 14.04 (yes, I have no
> choice).
> This fails when compiling openblas-0.2.19.p0, when building
> libopenblas_banias-r0.2.19.a.
>
> ar -ru ../libopenblas_banias-r0.2.19.a samax_k.o samin_k.o
> .....
> .....
>
> ar: sgemm_kernel.o: No such file or directory.
>
> In the root of sage, I then do:
>
> find . -name "sgemm_kernel*"
>
> and find:
>
>
> ./local/var/tmp/sage/build/openblas-0.2.19.p0/src/kernel/power/sgemm_kernel_16x8_power8.S
>
>
> ./local/var/tmp/sage/build/openblas-0.2.19.p0/src/kernel/arm64/sgemm_kernel_4x4.S
>
>
> ./local/var/tmp/sage/build/openblas-0.2.19.p0/src/kernel/arm64/sgemm_kernel_8x8.S
>
>
> ./local/var/tmp/sage/build/openblas-0.2.19.p0/src/kernel/arm64/sgemm_kernel_16x4.S
>
>
> ./local/var/tmp/sage/build/openblas-0.2.19.p0/src/kernel/mips64/sgemm_kernel_loongson3b_4x4.S
>
>
> ./local/var/tmp/sage/build/openblas-0.2.19.p0/src/kernel/mips64/sgemm_kernel_loongson3a_4x4.S
>
>
> ./local/var/tmp/sage/build/openblas-0.2.19.p0/src/kernel/mips64/sgemm_kernel_8x4_ps.S
>
>
> ./local/var/tmp/sage/build/openblas-0.2.19.p0/src/kernel/mips/sgemm_kernel_8x8_msa.c
>
>
> ./local/var/tmp/sage/build/openblas-0.2.19.p0/src/kernel/arm/sgemm_kernel_4x4_vfpv3.S
>
>
> ./local/var/tmp/sage/build/openblas-0.2.19.p0/src/kernel/arm/sgemm_kernel_4x2_vfp.S
>
>
> ./local/var/tmp/sage/build/openblas-0.2.19.p0/src/kernel/x86_64/sgemm_kernel_16x4_haswell.S
>
>
> ./local/var/tmp/sage/build/openblas-0.2.19.p0/src/kernel/x86_64/sgemm_kernel_8x8_sandy.S
>
>
> ./local/var/tmp/sage/build/openblas-0.2.19.p0/src/kernel/x86_64/sgemm_kernel_8x4_bulldozer.S
>
>
> ./local/var/tmp/sage/build/openblas-0.2.19.p0/src/kernel/x86_64/sgemm_kernel_16x2_piledriver.S
>
>
> ./local/var/tmp/sage/build/openblas-0.2.19.p0/src/kernel/x86_64/sgemm_kernel_16x2_bulldozer.S
>
>
> ./local/var/tmp/sage/build/openblas-0.2.19.p0/src/kernel/x86_64/sgemm_kernel_16x4_sandy.S
>
>
> which are certainly different versions of this sgemm_kernel, for
> different architecture.
>
> So, what happens ?
> Should it be that the architecture of the machine is not detected ?
> I am
> on a virtual machine.
>
> Any idea ?
>
> Yours
>
> t.d.
>
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<<attachment: tdumont.vcf>>
