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Re: [Opal] Increase in External Field Evaluation Time

Chronological Thread  
  • From: Christof Metzger-Kraus <christof.j.kraus AT>
  • To: Chris Hall <chall AT>
  • Cc: opal <opal AT>
  • Subject: Re: [Opal] Increase in External Field Evaluation Time
  • Date: Tue, 12 Jan 2021 06:21:44 +0100
  • Authentication-results: localhost; iprev=pass ( smtp.remote-ip=; spf=pass; dkim=pass header.s=20161025 header.a=rsa-sha256; dmarc=pass

Hi Chris,

I can't find anything in the changes of the source code that could have such an influence on the compute time for the external fields. I'll investigate this.


On Mon, Jan 11, 2021 at 9:44 PM Chris Hall <chall AT> wrote:
Hi All,

I recently noticed that some OPAL simulations were taking much longer than expected. We upgraded to OPAL 2.4.0 from 2.2.0 not that long ago so I reran an old simulation I still had outputs for. From this I see that the average Wall and CPU times for "External field eval." have increased by almost a factor of 10 when I compare 2.4 to 2.2. This leads to a doubling of the total wall clock run time. None of the other individual timing results show significant difference between the two runs.

Is anyone aware of changes between the two versions that might have caused this, or any other factors that should be investigated that would lead to this?

I've attached the run logs (with step updates cut out) for the runs on versions 2.2 and 2.4 for reference.


Chris hall

Research Scientist | RadiaSoft

720-502-3928 x709 | chall AT |

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