Run time gadget2 vs. gadget4

From: HU, Rui <>
Date: Sat, 10 Sep 2022 07:49:05 +0000

Hi all,

I am try to use the same IC (generated by 2LPTic), same setting and same threads in gadget2 and gadget4. Then I found gadget4 (2300s for 16 threads) is almost twice as slow as gadget2 (1226s for 16 threads). Is that because gadget4 do not do the merge and do two half-step kicks? Or maybe I misunderstand the Figure 61 in the Gadget4-code paper?

Received on 2022-09-10 09:49:25

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