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Old 2006-11-13, 07:25   #23
jinydu
 
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Quote:
Originally Posted by cheesehead View Post
My data? Are you referring to the entries in the "[x]jmptable[p]" tables in Prime95 source module mult.asm?
Yes. Unfortunately, I don't know where the Prime95 source module mult.asm is.

Quote:
Originally Posted by cheesehead View Post
To which of the tables in http://www.mersenneforum.org/showthread.php?t=2731 are you referring?
The first one; post #8 by Joe_O.

So here is an interesting question. Right now, I have 367.584 CPU years of credit for CPU testing ( That figure hasn't budged since Oct. 27 ). How large would an exponent have to single-handedly be worth that much GIMPS credit?

Last fiddled with by jinydu on 2006-11-13 at 07:25
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Old 2006-11-13, 15:19   #24
S485122
 
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On the first page of the GIMPS site you will see a link in the upper right corner : Source Code
On that page there is another link : download all the source code(3.6MB)
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Old 2006-11-26, 23:08   #25
jinydu
 
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Quote:
Originally Posted by cheesehead View Post
Look in Prime95 source module mult.asm at tables xjmptable and xjmptablep.

Some raw excerpts:

xjmptable DD 743, 32, 0.00000111, 896
...
allfft DD 68130000, 3670016, 0.323, 9456000
...
allfft DD 77910000, 4194304, 0.382, 5724160
...
allfft DD 96830000, 5242880, 0.485, 7045376
...
allfft DD 115300000, 6291456, 0.668, 8364416
...
allfft DD 134200000, 7340032, 0.886, 9683456
...


xjmptablep DD 739, 32, 0.00000111, 1152
...
allfft DD 58410000, 3145728, 0.289, 4143104
...
allfft DD 77700000, 4194304, 0.425, 5462016
...
DD 115000000, 6291456, 0.668, 9650176
...
DD 153100000, 8388608, 1.042, 12828672
...

I'll leave those to your interpretation. :-)
There are two tables under xjmptable. In each table, the first numerical column appears to be the maximum size of the exponent for that exponent to have that FFT size; the second numerical column is the FFT size. For some reason, the second table seems to be wrong; for instance, it seems to claim a FFT jump at p = 20M, when in fact no such jump exists.

For the first table (which seems to be correct), there seems to be a lot of near (but not exact) repetition for any given FFT range. As the numbers get larger, the table becomes increasingly repetitive. However, the indented text towards right does change a little with each repetition; I'm not sure what that means. There is a third number to the right of the FFT size that stays the same with each repetition of an FFT size; I don't know what it means either. For FFT size 6,291,456, that number is 0.668. It might have something to do with credit; but even if it does, whether or not Primenet awards credit in accordance with this chart is still an open question for me.

So if my guess is correct, the complete list of FFT ranges for version 24.14 are:

Code:
5\leq p\leq742                       32
743\leq p\leq1098                    48
1099\leq p\leq1468                   64
1469\leq p\leq1826                   80
1827\leq p\leq2178                   96
2179\leq p\leq2538                    112
2539\leq p\leq2904                   128
2905\leq p\leq3612                    160
3613\leq p\leq4310                   192
4311\leq p\leq5028                   224
5029\leq p\leq5754                   256
5755\leq p\leq7148                   320
7149\leq p\leq8526                   384
8527\leq p\leq9932                   448
9933\leq p\leq11358                   512
11359\leq p\leq14118                  640
14119\leq p\leq16838                  768
16839\leq p\leq19638                  896
19639\leq p\leq22476                  1024
22477\leq p\leq27898                 1280
27899\leq p\leq33288                  1536
33289\leq p\leq38798                  1792
38799\leq p\leq44338                 2048
44339\leq p\leq55098                 2560
55099\leq p\leq65728                  3072
65729\leq p\leq76558                  3584
76559\leq p\leq87548                 4096
87549\leq p\leq108799                5120
108800\leq p\leq129899                6144
129900\leq p\leq151299                7168
151300\leq p\leq172699                8192
172700\leq p\leq214399                10240
214400\leq p\leq255299                12288
255300\leq p\leq297299                14336
297300\leq p\leq340399                16384
340400\leq p\leq423299               20480
423300\leq p\leq504599                24576
504600\leq p\leq587499                28672
587500\leq p\leq671399                32768
671400\leq p\leq835199                40960
835200\leq p\leq995499                49152
995500\leq p\leq1157999               57344
1158000\leq p\leq1324999              65536
1325000\leq p\leq1647999              81920
1648000\leq p\leq1965999              98304
1966000\leq p\leq2286999              114688
2287000\leq p\leq2613999              131072
2614000\leq p\leq3250999              163840
3251000\leq p\leq3874999              196608
3875000\leq p\leq4511999              229376
4512000\leq p\leq5157999              262144
5158000\leq p\leq6420999              327680
6421000\leq p\leq7650999              393216
7651000\leq p\leq8907999              458752
8908000\leq p\leq10179999             524288
10180000\leq p\leq12649999            655360
12650000\leq p\leq15069999             786432
15070000\leq p\leq17549999            917504
Argh! After going through all that work, it appears that the above table is incorrect...

Last fiddled with by jinydu on 2006-11-27 at 00:07
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Old 2006-12-22, 10:54   #26
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StarQwest received 79.417 CPU years for testing M100,000,007. Does anyone know how to account for that figure?
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