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FLIP preconditioner? openCL? whats the catch?


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I tried help card and forum, but seemed like the topic was lightly touched.

- In H 14 we have new option, "Use OpenCL", in FLIP solver which, when on, disable preconditioner.

- The preconditioner help card said disable for 4 sockets machine. This mean 4 cpus machine. But this card was old, like since H12. I'm running dual xeon with total 24 cores 48 threads. Does this rule still apply to 4 cpus only?

- The openCL look like a faster solution than single threaded preconditioner. But it said for large viscous fluid.

Now im confused. Is there any rules of thumb for this?

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