Re: [ESPResSo-users] Configuration file for building Espresso with LB

[Axel Arnold]

Hi,

Just to clarify: You need to remove all features ending in _GPU, because those 
require a CUDA capable device. In addition, remove all below the Debugging 
comment, including ADDITIONAL_CHECKS, which will speed up things drastically, 
and reduce output to a human level.

Best,
Axel

JP Dr. Axel Arnold
ICP, Universität Stuttgart
Allmandring 3
70569 Stuttgart
Email: address@hidden
Phone: +49 711 685 67609

> On 17 Dec 2014, at 16:02, Owen Hickey <address@hidden> wrote:
> 
> Hello Edith,
> 
> The message indicates that no GPU capable of running CUDA code was
> detected. The easiest way to solve this is to run configure with the
> option --without-cuda. The LB is much faster on a GPU but if you don't
> have one available the CPU version is an alternative.
> 
> Good luck,
> 
> Owen
> 
>> On Wed, Dec 17, 2014 at 1:48 PM, Edith Euan <address@hidden> wrote:
>> Dear Axel,
>> 
>> Thanks for your answer, a this is the output for the sample
>> "espresso_logo.tcl"
>> 
>> 0: node_grid 1 1 1, pos 0 0 0, node_neighbors
>> =======================================================
>> =              espresso_logo.tcl                      =
>> =======================================================
>> 
>> cup: bottom_rad 2.38732
>> handle rad=1.41421 circ=6.66431 beta -0.229935
>> saucer: r_out=4.77465, r_in=2.38732, rings=3
>> Parts: total 194, cup 124, saucer 70 (valency -1.77143)
>> #particles realloc 224
>> CUDA error: no CUDA-capable device is detected
>> 
>> Plus, we have a lot text printed on the screen that, indeed, we are not able
>> to understand. Please, find attached the file that contains part of the
>> text.
>> 
>> Would you be so kind and give us some suggestions to improve our
>> configuration file for a better installation?
>> 
>> Thank you so much in advance.
>> 
>> Best,
>> Edith
>> 
>> 
>> 
>> 
>> On Tue, Dec 16, 2014 at 10:50 PM, Axel Arnold <address@hidden>
>> wrote:
>>> 
>>> 
>>> On 16.12.2014, at 17:34, Edith Euan <address@hidden> wrote:
>>> 
>>> Unfortunately, with this configuration file, we are able to compile
>>> Espresso without problem, but it doesn't run correctly any test code.
>>> 
>>> 
>>> Could you be a bit more specific? What means “doesn’t run correctly”?
>>> Which "test code”? The problem is unlikely with the myconfig, since our CI
>>> also uses such a maximal set, and it works.
>>> 
>>> Note that you also enabled all debug output and expensive debug  checks,
>>> so you will be flooded with debug output that you will not be able to
>>> interpret, but makes your simulation terribly slow.
>>> 
>>> Axel
>>> 
>>> ------------------------------------------------
>>> JP Dr. Axel Arnold
>>> ICP, Universität Stuttgart
>>> Allmandring 3
>>> 70569 Stuttgart, Germany
>>> Email: address@hidden
>>> Phone: +49 711 685 67609
>> 
>> 
>> --
>> Dr. Edith Cristina Euán-Díaz
>> ---------------------------------------------
>> address@hidden
>> ---------------------------------------------
>> Postdoctoral Fellow
>> Condensed Matter Theory Group
>> University of Antwerp
>> Groenenborgerlaan 171
>> BE-2020 Antwerp, Belgium
>> ---------------------------------------------
>> T: +32 3 265 35 42 3527
>>