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star-fst-l - [Star-fst-l] Final FST deadtime/rates with 3 timebins

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  • From: Tonko Ljubicic <tonko AT bnl.gov>
  • To: Star-fst L <star-fst-l AT lists.bnl.gov>
  • Subject: [Star-fst-l] Final FST deadtime/rates with 3 timebins
  • Date: Wed, 22 Dec 2021 11:04:31 +0100

Hello Gerard, all,

I played a bit with the intrinsic deadtime and:

1) 290 still crashes
2) 300 is OK -- I will set it to 300

Running full blast I get 100% dead at:

1) 4600 Hz
2) 140 MB/s per fiber
3) 94% CPU usage

Which means that at this point the CPU is the limiting factor.
We'll see how it will go in reality, with actual required rates, etc
but if we still have a problem I can mess with the code
and likely optimize the CPU code more to reach the final
limiter which is 200 MB/s per fiber, at ~6500 Hz.

-- Tonko




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