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Old 2020-11-02, 18:02   #947
rogue
 
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Quote:
Originally Posted by kladner View Post
Being Chicago, the pertinent question is "how many times will it be counted?".
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Old 2020-11-02, 21:13   #948
Dr Sardonicus
 
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Quote:
Originally Posted by rogue View Post
Being Chicago, the pertinent question is "how many times will it be counted?".
That would depend on which party's candidates he voted for.

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Old 2020-11-03, 04:09   #949
kladner
 
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The real question for me is, "Will the outcome reflect the votes actually cast, or will chicanery exclude hundreds of thousands of legitimate ballots?"
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Old 2020-11-03, 13:00   #950
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Quote:
Originally Posted by kladner View Post
The real question for me is, "Will the outcome reflect the votes actually cast, or will chicanery exclude hundreds of thousands of legitimate ballots?"
Why not both?
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Old 2020-11-03, 14:43   #951
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Quote:
Originally Posted by Xyzzy View Post
We won the lottery and managed to place a 3080 (founder's edition) on order for delivery Monday.
Quote:
Originally Posted by Xyzzy View Post
Plot twist: We were offered $500 and a sealed NIB 3070 (founder's edition) for our soon-to-arrive 3080. That offer was too good to pass up! In the end, we will have paid only $250 a new 3070!
We decided to keep the 3080. It was delivered yesterday.

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Old 2020-11-03, 14:58   #952
kruoli
 
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Do you now have both?
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Old 2020-11-03, 15:05   #953
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No, just the 3080 for now.

We need to sell our 2060 Super before we get any more toys.
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Old 2020-11-30, 21:54   #954
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Finally sorted out most of the last box downed by a storm weeks ago. So 24 cores and 1 of the 2 gpus have now rejoined the fray. No idea what's wrong with the other gpu; doesn't even drive a display, but claims to be running at full clock rate while accomplishing nothing. It was running headless at the time of the storm.

Last fiddled with by kriesel on 2020-11-30 at 21:55
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Old 2020-12-01, 00:37   #955
petrw1
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Quote:
Originally Posted by Xyzzy View Post
We decided to keep the 3080. It was delivered yesterday.

Please let me know the mfaktc rates you get....in case I decide I need one.
P.S. Are you using the 2047 class version?
For my 2080Ti it was 10% faster.
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Old 2020-12-01, 06:40   #956
LaurV
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Quote:
Originally Posted by petrw1 View Post
P.S. Are you using the 2047 class version?
For my 2080Ti it was 10% faster.
What's that 2047 clases???
Mfaktc is either 4620 or 420 classes.

One being faster than the other doesn't depend much of the hardware, but it highly depends on the exponent range and bitlevel. It comes to balancing the sieving with exponentiation. Therefore it can be tuned a bit also from the sieve upper limit. But not much. Lots of candidates make sieving faster (i.e. high bitlevel, low p), while not many candidates (lower bitlevel and high p) leads to slower sieving and longer exponentiation for each remaining candidate, therefore you must decrease the number of classes to have more candidates for each class in the sieve. Sieving is more efficient on large chunks. On small chunks there is a lot of overhead to determine initial starting point for each chunk, and sieving is less efficient, as it eliminates less candidates at each pass, so it needs more passes. Depend of the range you work, bitlevel, and card (in this order) you can chose one variant of mfaktc, or the other.

Last fiddled with by LaurV on 2020-12-01 at 07:17
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Old 2020-12-01, 09:13   #957
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2047 M GpuSieveSize. In a modified mfaktc.ini, for a modified mfaktc.exe:

Code:
# GPUSieveSize defines how big of a GPU sieve we use (in M bits).
#
# Minimum: GPUSieveSize=4
# Maximum: GPUSieveSize=128 unless running a 2047-limit modified mfaktc
#
# Default: GPUSieveSize=64

GPUSieveSize=2047
There are indications performance would be helped a little on the fastest gpus if the variable was change from the current limiting signed 32 bit to unsigned allowing up to 4095. Another influence on low bit levels or high exponent is IO time for logging the class completions, and for which speed is helped by ssd or ramdisk.

Last fiddled with by kriesel on 2020-12-01 at 09:18
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