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process speed in fluent

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Old   July 5, 2020, 06:29
Default process speed in fluent
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aref
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Hello guys. hope you be healthy.i have two question.
When Run i processing 6m hexa element in fluent and choose 1 cores,the speed is two low,then when i set 3 cores in parallel tab the speed become more low.
1.what is the reason of decreasing speed by switching 1 to 3 cores?
2.what should i do to increase the speed of process?
My OS is windows 10 64 bit
My ram is 8 gb
and my cpu have 4 cores and 0 hyperthread.
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Old   July 5, 2020, 21:02
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Check your RAM usage during calculation, you might be exceeding your RAM capacity. If you are over-capacity, increasing number of cores will slow it down since it has to load and un-load all the time.
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