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Old 2011-09-05, 22:30   #1
dbaugh
 
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Question multi-core TF

Can trial factoring be setup to use multiple cores on a single number and factor range or must there be different ranges on a single number assigned to different workers?
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Old 2011-09-05, 23:27   #2
lycorn
 
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Quote:
Originally Posted by dbaugh View Post
Can trial factoring be setup to use multiple cores on a single number?
No. TF code is not multithreaded.
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Old 2011-09-05, 23:52   #3
science_man_88
 
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Quote:
Originally Posted by lycorn View Post
No. TF code is not multithreaded.
it kinda maid no sense to me that way because if you're trying to find a factor ( hopefully lowest) if the lowest one does find a factor you would likely have to stop all workers.
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Old 2011-09-06, 01:32   #4
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A perhaps more informative answer right now is that GPUs such as the NVIDIA GTX440 series supporting CUDA (and now also, on a more experimental basis, some ATI/AMD GPUs supporting OpenCL) manage to very effectively parallelize the TF problem and tremendously outproduce CPUs, by 10-100x to 1, depending on the CPU and GPU being compared.

So if you want to get a lot of TF done, you need a GPU, running mfaktc or mfakto. Look under the "Hardware" forum, in the "GPU" subforum and ask there for details.
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