[aspect-devel] ": internal error: ** The compiler has encountered an unexpected problem.

[Lev Karatun]

Ok, will keep it in mind, thanks John!
By the way, did you notice any difference in performance when you were
switching between optimization levels?

Best regards,
Lev Karatun.

2017-07-06 11:37 GMT-04:00 John Naliboff <jbnaliboff at ucdavis.edu>:

> Hi Lev,
>
> Glad to hear the compilation worked. An anecdotal word of caution with
> regard to the intel optimization levels - with a different code we found
> some of our benchmarks were not passing when we switched from level 2 to
> level 3 optimization. That may not be the case here, but perhaps something
> to watch out for.
>
> Cheers,
> John
>
> *************************************************
> John Naliboff
> Assistant Project Scientist, CIG
> Earth & Planetary Sciences Dept., UC Davis
>
> On 07/06/2017 07:57 AM, Lev Karatun wrote:
>
> Hi Wolfgang,
>
> yes, I was actually trying to do it yesterday -- to compile with level 2
> optimization and on 1 core. It actually compiled successfully on 1 core for
> both level 2 and 3 optimizations.
> Thanks everyone for the help!
>
> Best regards,
> Lev Karatun.
>
> 2017-07-06 9:39 GMT-04:00 Wolfgang Bangerth <bangerth at tamu.edu>:
>
>> On 07/05/2017 10:45 AM, Lev Karatun wrote:
>>
>>> The cluster support says it's recommended to use intel compilers because
>>> they provide significant speed-ups on their machines, and all modules are
>>> installed using icc (including trilinos and p4est).
>>>
>>
>> From all of our experiments, the difference between icc and gcc is
>> actually quite small (at best a few percent). I wouldn't worry about it.
>>
>>
>> If I want to install Aspect using gcc, does it mean I have to reinstall
>>> deal.II, trilinos and p4est using gcc first?
>>>
>>
>> Yes, probably. (It may be that you don't have to reinstall p4est because
>> it's just a C library, but it may be easiest to just do that as well.)
>>
>> But I don't see why you need to switch to gcc. I believe that the
>> compiler just ran out of memory. You may as well just try to compile
>> everything again with, say, 'make -j1' and see whether that makes the
>> compilation succeed.
>>
>> Best
>>  W.
>>
>>
>> --
>> ------------------------------------------------------------------------
>> Wolfgang Bangerth          email:                 bangerth at colostate.edu
>>                            www: http://www.math.colostate.edu/~bangerth/
>>
>>
>
>
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