20120806, 06:38  #78 
Basketry That Evening!
"Bunslow the Bold"
Jun 2011
40<A<43 89<O<88
3·29·83 Posts 
This is a somewhat silly request, but in nfs.c, could you add some sort of description of how the state machine works at the beginning? It's not particularly hard to read from the code, but there's enough extra stuff/lines that by the time I've gotten through to case 6 I've already forgotten which one 2 was.
Alternately, use an enum NFS_STATE, but just adding a descriptive comment would probably be easier ( Edit: An idea for way off in the future when there's nothing of priority to work on (yeah right): In order to facilitate multiple jobs in one dir, instead of using nfs.[various exts] as the files, you could use a different header for each job. A simple header would be cxxx.[ext] so e.g. a C130 job would be c130.dat.p, c130.job, etc. Of course, to provide even more flexibility, you could also use the first 3,4,5,6 digits of the number, e.g. c130_1462.nfs.dat.p and c130_1462.job or c150_9225.job, etc. Code:
sprintf(nfs_obj_t>job_name, "c%d_%.4s", strlen(msieve_obj>input), msieve_obj>input); sprintf(nfs_obj_t>logfile, "%s.log", nfs_obj_t>job_name); Last fiddled with by Dubslow on 20120806 at 06:59 
20120806, 20:36  #79 
Mar 2010
67_{8} Posts 
Any chance YAFU could take advantage of a GPU or is that further down the merge with MSIEVE?

20120811, 02:14  #80 
Basketry That Evening!
"Bunslow the Bold"
Jun 2011
40<A<43 89<O<88
3×29×83 Posts 
A petpeeve request:
nfs_filemanip.c:631: Code:
if (VFLAG > 0) printf("found poly: %s",line); 
20120811, 04:31  #81 
"Ben"
Feb 2007
3,371 Posts 

20120811, 04:33  #82 
"Ben"
Feb 2007
3,371 Posts 

20120813, 04:28  #83 
Basketry That Evening!
"Bunslow the Bold"
Jun 2011
40<A<43 89<O<88
3·29·83 Posts 
Why does YAFU insist on searching for the last specialq if passed a nc* option? Is it possible to skip that?

20120814, 14:40  #84  
"Ben"
Feb 2007
3,371 Posts 
Quote:
For each of "nc", "nc2", "nc3", "ncr" I get the following output, and no specialq search: Code:
nfs: checking for job file  number in job file matches input nfs: checking for data file nfs: commencing NFS restart nfs: user specified post processing only, skipping search for last specialq 

20120814, 16:07  #85 
Basketry That Evening!
"Bunslow the Bold"
Jun 2011
40<A<43 89<O<88
16065_{8} Posts 
Code:
bill@Gravemind:~/yafu/rsals∰∂ taskset D nice n 19 ./yafu "nfs($(cat num))" threads 3 ncr R 08/13/12 06:58:15 v1.31.1 @ Gravemind, System/Build Info: Using GMPECM 6.3, Powered by GMP 5.0.1 detected Intel(R) Core(TM) i72600K CPU @ 3.40GHz detected L1 = 32768 bytes, L2 = 8388608 bytes, CL = 64 bytes measured cpu frequency ~= 3392.309750 using 20 random witnesses for RabinMiller PRP checks =============================================================== ======= Welcome to YAFU (Yet Another Factoring Utility) ======= ======= bbuhrow@gmail.com ======= ======= Type help at any time, or quit to quit ======= =============================================================== cached 78498 primes. pmax = 999983 >> nfs: checking for job file  number in job file matches input nfs: checking for data file nfs: commencing NFS restart nfs: previous data file found  commencing search for last specialq line 0 = 26325291,50042659:4603,53FB,1FA39,6B809,988D3,342751,3A8A073,3,5,5,DF,347:63966941,24B5,4D33,404FF,2658127,8E9,5,D,17,1F7,6309FFB line 1 = 21418767,175944275:834ea07,EC5B1,3B3C23,162257B,522BFBF,3,3,11,11,89,E3,6A3:40b07bd1,238C45,37D89D,5DD02B,351A31B,1499,11,6309FFB line 2 = 8786805,125447437:1eb15509,2353,38B7,4451,234F5,3D0AF,C5011,106867,3,38F:1c7c74c9,ced9391,B1F13,1292161,3C5A3A1,D,1F,6309FFB line 3 = 22063949,47404121:f50365f,966AF,BB0C69,BC23EB,15B5,118D,5,7,17,AD,137,5C9:24d2391d,b8faf5d,4CB955,8C4D0F,4151249,5,6309FFB nfs: parsing specialq parsing rat side spq from 22063949,47404121:f50365f,966AF,BB0C69,BC23EB,15B5,118D,5,7,17,AD,137,5C9:24d2391d,b8faf5d,4CB955,8C4D0F,4151249,5,6309FFB found 5c9 parsing alg side spq from 22063949,47404121:f50365f,966AF,BB0C69,BC23EB,15B5,118D,5,7,17,AD,137,5C9:24d2391d,b8faf5d,4CB955,8C4D0F,4151249,5,6309FFB found 6309ffb parsing rat side spq from 26325291,50042659:4603,53FB,1FA39,6B809,988D3,342751,3A8A073,3,5,5,DF,347:63966941,24B5,4D33,404FF,2658127,8E9,5,D,17,1F7,6309FFB found 347 parsing alg side spq from 26325291,50042659:4603,53FB,1FA39,6B809,988D3,342751,3A8A073,3,5,5,DF,347:63966941,24B5,4D33,404FF,2658127,8E9,5,D,17,1F7,6309FFB found 6309ffb parsing rat side spq from 21418767,175944275:834ea07,EC5B1,3B3C23,162257B,522BFBF,3,3,11,11,89,E3,6A3:40b07bd1,238C45,37D89D,5DD02B,351A31B,1499,11,6309FFB found 6a3 parsing alg side spq from 21418767,175944275:834ea07,EC5B1,3B3C23,162257B,522BFBF,3,3,11,11,89,E3,6A3:40b07bd1,238C45,37D89D,5DD02B,351A31B,1499,11,6309FFB found 6309ffb nfs: commencing gnfs on c235: 5924803283046424380127702714410168927856963922073854385856048259658298530274495160311145216164689204483139094513462824443493417977121643921085458690640985251793305798081061369516712260880142935593529633572390949734336224813305984910083 nfs: found 214584929 relations, continuing job at specialq = 103849979 nfs: commencing msieve linear algebra commencing linear algebra matrix starts at (0, 0) matrix is 8044900 x 8045076 (2404.6 MB) with weight 742704674 (92.32/col) sparse part has weight 541868260 (67.35/col) saving the first 48 matrix rows for later matrix includes 64 packed rows matrix is 8044852 x 8045076 (2327.3 MB) with weight 589558220 (73.28/col) sparse part has weight 529625512 (65.83/col) using block size 65536 for processor cache size 8192 kB dump interval = 2000 commencing Lanczos iteration (3 threads) memory use: 2018.8 MB restarting at iteration 18633 (dim = 1178407) linear algebra at 14.7%, ETA 85h15m 8045076 dimensions (14.7%, ETA 85h15m) checkpointing every 90000 dimensions linear algebra completed 3620501 of 8045076 dimensions (45.0%, ETA 50h43m) Edit: Code:
bill@Gravemind:~/yafu/rsals∰∂ cat yafu.ini B1pm1=100000 B1pp1=20000 B1ecm=11000 rhomax=1000 threads=2 pretest_ratio=0.35 // btw, even with this, for aliquots i usually see ratio <0.33, typically ~0.30 v=1 ggnfs_dir=/home/bill/yafu/ggnfs/ ecm_path=/home/bill/yafu/ecm/ecm Last fiddled with by Dubslow on 20120814 at 16:11 
20120814, 16:17  #86 
"Ben"
Feb 2007
3,371 Posts 
Ah. No, it is the version. The checks for "nc*" were added in 1.32.

20120814, 16:20  #87  
Basketry That Evening!
"Bunslow the Bold"
Jun 2011
40<A<43 89<O<88
3·29·83 Posts 
Quote:
I upgraded the exe in ~/yafu, but not the subfolders Code:
^Cnear algebra completed 3640974 of 8045076 dimensions (45.3%, ETA 50h30m) Received signal 2... please wait setting flag Received signal 2... please wait setting flag Received signal 2... please wait setting flag lanczos halted after 57579 iterations (dim = 3641100) BLanczosTime: 101792 ***factors found*** ***cofactor*** C235 = 5924803283046424380127702714410168927856963922073854385856048259658298530274495160311145216164689204483139094513462824443493417977121643921085458690640985251793305798081061369516712260880142935593529633572390949734336224813305984910083 bill@Gravemind:~/yafu/rsals∰∂ cp ../yafu . bill@Gravemind:~/yafu/rsals∰∂ taskset D nice n 19 ./yafu "nfs($(cat num))" threads 3 ncr R 08/14/12 11:21:17 v1.32 @ Gravemind, System/Build Info: Using GMPECM 6.3, Powered by GMP 5.0.1 detected Intel(R) Core(TM) i72600K CPU @ 3.40GHz detected L1 = 32768 bytes, L2 = 8388608 bytes, CL = 64 bytes measured cpu frequency ~= 3392.310470 using 20 random witnesses for RabinMiller PRP checks =============================================================== ======= Welcome to YAFU (Yet Another Factoring Utility) ======= ======= bbuhrow@gmail.com ======= ======= Type help at any time, or quit to quit ======= =============================================================== cached 78498 primes. pmax = 999983 >> nfs: checking for job file  number in job file matches input nfs: checking for data file nfs: commencing NFS restart nfs: user specified post processing only, skipping search for last specialq nfs: commencing gnfs on c235: 5924803283046424380127702714410168927856963922073854385856048259658298530274495160311145216164689204483139094513462824443493417977121643921085458690640985251793305798081061369516712260880142935593529633572390949734336224813305984910083 nfs: continuing with sieving  could not determine last special q; using default startq nfs: commencing msieve linear algebra commencing linear algebra Last fiddled with by Dubslow on 20120814 at 16:21 Reason: code 

20120815, 01:37  #88 
Basketry That Evening!
"Bunslow the Bold"
Jun 2011
40<A<43 89<O<88
1C35_{16} Posts 
About the PRP>P thing
The APRCL Wiki page says Alpertron uses it in his ECM/Java website, with downloadable source code. Another benefit is that since alpertron himself posts here, we can be absolutely sure no licenses are being violated
Code:
// Written by Dario Alejandro Alpern (Buenos Aires  Argentina) // Last updated September 10th, 2011. See http://www.alpertron.com.ar/ECM.HTM // // Based in Yuji Kida's implementation for UBASIC interpreter // // No part of this code can be used for commercial purposes without // the written consent from the author. Otherwise it can be used freely // except that you have to write somewhere in the code this header. // Prime checking routine // Return codes: 0 = Number is prime. // 1 = Number is composite. int AprtCle(BigInteger N) { int i, j, G, H, I, J, K, P, Q, T, U, W, X; int IV, InvX, LEVELnow, NP, PK, PL, PM, SW, VK, TestedQs, TestingQs; int QQ, T1, T3, U1, U3, V1, V3; int LengthN, LengthS; long Mask; double dS; String primalityString = ""; lowerTextArea.setText("Starting Prime Check routine."); NumberLength = BigNbrToBigInt(N, TestNbr); GetYieldFrequency(); GetMontgomeryParms(); if (!Computing3Squares) { textAreaContents = ""; StringToLabel = "Testing primality of "; insertBigNbr(N); addStringToLabel("(" + N.toString().length() + " digits)"); primalityString = textAreaContents + StringToLabel + "\nAPRTCLE progress: "; } j = PK = PL = PM = 0; for (I = 0; I < NumberLength; I++) { biS[I] = 0; for (J = 0; J < PWmax; J++) { aiJX[J][I] = 0; } } GetPrimes2Test : for (i = 0; i < LEVELmax; i++) { biS[0] = 2; for (I = 1; I < NumberLength; I++) { biS[I] = 0; } for (j = 0; j < aiNQ[i]; j++) { Q = aiQ[j]; U = aiT[i] * Q; do { U /= Q; MultBigNbrByLong(biS, Q, biS, NumberLength); } while (U % Q == 0); // Exit loop if S^2 > N. if (CompareSquare(biS, TestNbr) > 0) { break GetPrimes2Test; } } /* End for j */ } /* End for i */ if (i == LEVELmax) { /* too big */ return ProbabilisticPrimeTest(N); } LEVELnow = i; TestingQs = j; T = aiT[LEVELnow]; NP = aiNP[LEVELnow]; MainStart : for (;;) { for (i = 0; i < NP; i++) { P = aiP[i]; SW = TestedQs = 0; Q = W = (int) BigNbrModLong(TestNbr, P * P); for (J = P  2; J > 0; J) { W = (W * Q) % (P * P); } if (P > 2 && W != 1) { SW = 1; } for (;;) { for (j = TestedQs; j <= TestingQs; j++) { Q = aiQ[j]  1; G = aiG[j]; K = 0; while (Q % P == 0) { K++; Q /= P; } Q = aiQ[j]; if (K == 0) { continue; } if (!Computing3Squares) { lowerTextArea.setText( primalityString + "P = " + P + ", Q = " + Q + " (" + (i * (TestingQs + 1) + j) * 100 / (NP * (TestingQs + 1)) + "%)"); } PM = 1; for (I = 1; I < K; I++) { PM = PM * P; } PL = (P  1) * PM; PK = P * PM; J = 1; for (I = 1; I < Q; I++) { J = J * G % Q; aiIndx[J] = I; } J = 1; for (I = 1; I <= Q  2; I++) { J = J * G % Q; aiF[I] = aiIndx[(Q + 1  J) % Q]; } for (I = 0; I < PK; I++) { for (J = 0; J < NumberLength; J++) { aiJ0[I][J] = aiJ1[I][J] = 0; } } if (P > 2) { JacobiSum(1, 1, P, PK, PL, PM, Q); } else { if (K != 1) { JacobiSum(1, 1, P, PK, PL, PM, Q); for (I = 0; I < PK; I++) { for (J = 0; J < NumberLength; J++) { aiJW[I][J] = 0; } } if (K != 2) { for (I = 0; I < PM; I++) { for (J = 0; J < NumberLength; J++) { aiJW[I][J] = aiJ0[I][J]; } } JacobiSum(2, 1, P, PK, PL, PM, Q); for (I = 0; I < PM; I++) { for (J = 0; J < NumberLength; J++) { aiJS[I][J] = aiJ0[I][J]; } } JS_JW(PK, PL, PM, P); NormalizeJS(PK, PL, PM, P); for (I = 0; I < PM; I++) { for (J = 0; J < NumberLength; J++) { aiJ1[I][J] = aiJS[I][J]; } } JacobiSum(3 << (K  3), 1 << (K  3), P, PK, PL, PM, Q); for (J = 0; J < NumberLength; J++) { for (I = 0; I < PK; I++) { aiJW[I][J] = 0; } for (I = 0; I < PM; I++) { aiJS[I][J] = aiJ0[I][J]; } } JS_2(PK, PL, PM, P); NormalizeJS(PK, PL, PM, P); for (I = 0; I < PM; I++) { for (J = 0; J < NumberLength; J++) { aiJ2[I][J] = aiJS[I][J]; } } } } } for (J = 0; J < NumberLength; J++) { aiJ00[0][J] = aiJ01[0][J] = MontgomeryMultR1[J]; for (I = 1; I < PK; I++) { aiJ00[I][J] = aiJ01[I][J] = 0; } } VK = (int) BigNbrModLong(TestNbr, PK); for (I = 1; I < PK; I++) { if (I % P != 0) { U1 = 1; U3 = I; V1 = 0; V3 = PK; while (V3 != 0) { QQ = U3 / V3; T1 = U1  V1 * QQ; T3 = U3  V3 * QQ; U1 = V1; U3 = V3; V1 = T1; V3 = T3; } aiInv[I] = (U1 + PK) % PK; } else { aiInv[I] = 0; } } if (P != 2) { for (IV = 0; IV <= 1; IV++) { for (X = 1; X < PK; X++) { for (I = 0; I < PK; I++) { for (J = 0; J < NumberLength; J++) { aiJS[I][J] = aiJ0[I][J]; } } if (X % P == 0) { continue; } if (IV == 0) { LongToBigNbr(X, biExp, NumberLength); } else { LongToBigNbr(VK * X / PK, biExp, NumberLength); if (VK * X / PK == 0) { continue; } } JS_E(PK, PL, PM, P); for (I = 0; I < PK; I++) { for (J = 0; J < NumberLength; J++) { aiJW[I][J] = 0; } } InvX = aiInv[X]; for (I = 0; I < PK; I++) { J = I * InvX % PK; AddBigNbrModN(aiJW[J], aiJS[I], aiJW[J], TestNbr, NumberLength); } NormalizeJW(PK, PL, PM, P); ...<char limit> 
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