Comments (5)
from athena.
If I understand correctly, he said -O3 converges but the other configurations fail. I suspect that -O2 fails to unroll some functions and interfere vectorization with #pragma omp simd. (-O0 should work.) If this is the case, it is expected, but maybe it should be better documented.
from athena.
@tomidakn sorry, I remembered incorrectly when I talked to you about this. -O3 does not converge , but -O2 does.
@felker - I used Orszag-tan vortex test with 512x512 and 256x256 resolution. with -O3, the time step kept getting smaller and the program will run for a long time. I plan to run some more test on graviton 3 in the coming weeks.
from athena.
Tested this on C7g, the issue no longer exists. We can close this issue.
from athena.
tested on graviton3 c7g instance. the issue no longer exists.
from athena.
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from athena.