julia compile on AMD

[jean-michel mercier]

Hello,
When I use julia with AMD processors (CENTOS 6.6), my program is 4 times slower than the Intel processor. So I try to recompile julia with the following options:
OPENBLAS_TARGET_ARCH = BARCELONA
OPENBLAS_USE_THREAD = 0
I have this error when compiling:
gc.c: 40: error: flexible array member in struct Otherwise empty
make [2]: *** [gc.o] Error 1
make [2]: *** Waiting for unfinished jobs ...

Many tahnks for your help!

JM

[Isaiah Norton]

Looks like https://github.com/JuliaLang/julia/issues/10041

[jean-michel mercier]

Hello,
Yet I have a version of gcc is this:
gcc Version 4.4.7 20120313 (Red Hat 4.4.7-11) (CCG)
This version is above that recommended in the doc

[Andreas Noack]

Others know more about this, but it would probably be good if you could ude a more recent compiler. The old ones causes problems and it is not unlikely that the official requirement will be a newer one soon.

[Milan Bouchet-Valat]

Le mardi 03 février 2015 à 17:21 +0100, jean-michel mercier a écrit :
> Hello,
> Yet I have a version of gcc is this:
> gcc Version 4.4.7 20120313 (Red Hat 4.4.7-11) (CCG)
> This version is above that recommended in the doc

Yes, in the referenced issue we're currently wondering whether we should
fix the docs or the code.

Anyway, on RHEL6 you can use the devtoolset, which provides very recent
compilers. Red Hat provides one if you're under contract, and a free
version is available from:
http://linux.web.cern.ch/linux/devtoolset/


Regards