[CP2K-user] [CP2K:11916] Cores to use the H2O_64 benchmark

Julita Inca Chiroque ji... at pucp.pe
Wed Jun 26 22:04:23 UTC 2019


Thank you Thomas for the answer.
So, this means that I can start the benchmarking of the 256 water sample
using 8 cores?
As you said, I experienced memory issues with MPI when I use 1, 2 and 4
with popt.

Thanks again Thomas,
Julita

El mié., 26 jun. 2019 a las 21:41, Thomas Kühne (<tku... at gmail.com>)
escribió:

> Dear Julita,
>
> this is a rather old benchmark conducted on „Jump“ at Jülich around 2005!
> For the largest systems benchmarks for small CPU number are most likely
> not available due to limited memory and/or unreasonable execution time.
>
> Cheers,
> Thomas
>
> Am 26.06.2019 um 22:17 schrieb Julita Inca Chiroque <ji... at pucp.pe>:
>
> Hello cp2k group
>
> Can I ask if there is a reason to plot the graph attached (found in the
> CP2K official website) since 8 cores to test the H2O_256.inp instead of 1?
>
> I was trying to run the benchmark using 1 to 512 cores, and it crashes
> when I set 1, 2, and 4 cores with MPI. I was looking for the solution to
> fix this bug, but I don't have the right answer yet. I run this sample
> three times so far on a Broadwell architecture.
>
> Thanks in advance,
> Julita Inca
>
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