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Old 2022-06-15, 00:51   #1
BigNumberGuy
 
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Default Iteration Times

Hey, just wanted to ask, is an iteration time of 12-14 ms/iter normal around exponent on the order of 65 million?
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Old 2022-06-15, 00:56   #2
Uncwilly
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What processor, MB, memory, and how many cores being used?
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Old 2022-06-15, 00:57   #3
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Quote:
Originally Posted by BigNumberGuy View Post
Hey, just wanted to ask, is an iteration time of 12-14 ms/iter normal around exponent on the order of 65 million?
Can't tell. For what computation, in what software & version, on what hardware? If in a CPU app such as mprime/prime95 or Mlucas, how many cores/worker? If in a GPU app, how many instances running?
Did you use any reference info before asking, such as https://www.mersenneforum.org/showpo...5&postcount=4?

Last fiddled with by kriesel on 2022-06-15 at 01:00
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Old 2022-06-15, 01:51   #4
BigNumberGuy
 
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Processor: Apple M1 (dunno how many ghz)
Cores: 8 per worker, 1 worker
Memory: 8 GB
mprime v30.7b9
Running DC on M650xxxxx

Last fiddled with by BigNumberGuy on 2022-06-15 at 02:25
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Old 2022-06-15, 13:46   #5
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I'm not a Mac user myself, but mixing P cores & E cores in the same worker probably slows things. IIRC mprime does not expect and exploit optimally differing core performance levels in a mix. Try for just the 4 P cores. https://en.wikipedia.org/wiki/Apple_M1#Variants
See also https://mersenneforum.org/showthread.php?t=27112
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Old 2022-06-16, 00:24   #6
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Ok, I will try that.

EDIT: Nope, doesn't work. Iteration time springs up to about 17 ms/iter when I use 4 cores.

Last fiddled with by BigNumberGuy on 2022-06-16 at 00:31
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