How I install YAFU onto my Ubuntu Machines - Page 9

EdH · 2020-07-01, 21:20

Quote:

Originally Posted by Mr. Odd

I'm using the wip version.

Interesting about the bold edit - the text in my make file looked nothing like what you quoted.

Sorry, my mistake, it was gcc-7.3.0 and my system now has gcc-9.2.1, so I mixed them up.

Eh, all's well that end's well.

B² has probably changed it again! He does that, which is a good thing. It helps me keep on my toes and it shows he's actively improving the YAFU package. The yafu.ini file has changed in a big way just recently.

sivandahan7 · 2020-08-10, 15:08

Hi,
Thank you for installation instructions,
It's looking good and working correctly !
But it's not working as I expecting,
According to "lscpu" command, I have 8 Cpu(s) and 2 threads per cpu,
Together it's 16 threads (this is the number I put on threads field of "yafu.ini" file),
According to "top" and "monitor" Ubuntu tools,
Actually I see yafu running on one cpu with 100% usage,
What about other cpus and why yafu does no use them ?
Do I miss something ?
Thanks a lot,

EdH · 2020-08-10, 21:59

Quote:

Originally Posted by sivandahan7

Hi,
Thank you for installation instructions,
It's looking good and working correctly !
But it's not working as I expecting,
According to "lscpu" command, I have 8 Cpu(s) and 2 threads per cpu,
Together it's 16 threads (this is the number I put on threads field of "yafu.ini" file),
According to "top" and "monitor" Ubuntu tools,
Actually I see yafu running on one cpu with 100% usage,
What about other cpus and why yafu does no use them ?
Do I miss something ?
Thanks a lot,

Thanks for the feedback. Only a couple things come to mind:

1. Make sure the yafu.ini file is in the directory that you are using to call YAFU.

2. Make sure that the threads line isn't commented out with a "%" symbol.

You might also try adding "-threads 16" (without quotes) to the command line and see if that works.

kruoli · 2020-08-11, 08:15

Please try running something with SIQS. It should look something like this: ==== sieving in progress ( 16 threads): 82576 relations needed ====
In some steps, yafu does not use more then 1 thread. You might have to add prefer_gmpecm to the ini-file and make sure the GMP-ECM binary's location is set correctly.

sivandahan7 · 2020-08-13, 08:41

Thanks,
Now it's working correctly,
Unfortunately, I'm getting "Segmentation fault" while I try to factor 512 bit number,
Please see the following log:

Code:

applying option threads=16
applying option aprcl_p=500
applying option aprcl_d=200
applying option ggnfs_dir=/home/user/Desktop/yafu/Math/ggnfs/bin/
applying option B1ecm=11000
applying option ecm_path=/usr/local/bin/ecm
applying option B1pm1=20000
applying option tune_info=Intel(R) Xeon(R) Gold 5122 CPU @ 3.60GHz,LINUX64,1.59078e-05,0.196092,0.299688,0.0999245,102.36,42
applying option tune_info=Intel(R) Core(TM) i7-8700T CPU @ 2.40GHz,LINUX64,7.5902e-05,0.182524,0.621489,0.0992485,108.201,2399.99


08/12/20 12:09:54 v1.35-beta @ user-virtual-machine, System/Build Info: 
Using GMP-ECM 7.0.5-dev, Powered by GMP 6.2.0
detected Intel(R) Core(TM) i7-8700T CPU @ 2.40GHz
detected L1 = 32768 bytes, L2 = 12582912 bytes, CL = 64 bytes
measured cpu frequency ~= 2399.983520
using 1 random witnesses for Rabin-Miller PRP checks

===============================================================
======= Welcome to YAFU (Yet Another Factoring Utility) =======
=======             bbuhrow@gmail.com                   =======
=======     Type help at any time, or quit to quit      =======
===============================================================
cached 664579 primes. pmax = 9999991


>>         
>> factor(7481941016577287348099705569618881449446613674024887958060868042015962068162606112448282331657456711392343427317702862486293906907971066705762469196914429)
fac: factoring 7481941016577287348099705569618881449446613674024887958060868042015962068162606112448282331657456711392343427317702862486293906907971066705762469196914429
fac: using pretesting plan: normal
fac: using tune info for qs/gnfs crossover
div: primes less than 10000
fmt: 1000000 iterations
rho: x^2 + 3, starting 1000 iterations on C154 
rho: x^2 + 2, starting 1000 iterations on C154 
rho: x^2 + 1, starting 1000 iterations on C154 
nfs: searching for brent special forms...
nfs: searching for homogeneous cunningham special forms...
nfs: searching for XYYXF special forms...
nfs: couldn't find special form
pm1: starting B1 = 150K, B2 = gmp-ecm default on C154
ecm: 30/30 curves on C154, B1=2k, B2=gmp-ecm default
ecm: 74/74 curves on C154, B1=11k, B2=gmp-ecm default
ecm: 214/214 curves on C154, B1=50k, B2=gmp-ecm default, ETA: 0 sec 
pm1: starting B1 = 3750K, B2 = gmp-ecm default on C154
ecm: 430/430 curves on C154, B1=250k, B2=gmp-ecm default, ETA: 0 sec  
pm1: starting B1 = 15M, B2 = gmp-ecm default on C154
ecm: 904/904 curves on C154, B1=1M, B2=gmp-ecm default, ETA: 0 sec   
ecm: 2350/2350 curves on C154, B1=3M, B2=gmp-ecm default, ETA: 0 sec    
ecm: 4480/4480 curves on C154, B1=11M, B2=gmp-ecm default, ETA: 0 sec    
ecm: 2453/2453 curves on C154, B1=43M, B2=gmp-ecm default, ETA: 0 sec    
nfs: commencing nfs on c154: 7481941016577287348099705569618881449446613674024887958060868042015962068162606112448282331657456711392343427317702862486293906907971066705762469196914429
nfs: searching for brent special forms...
nfs: searching for homogeneous cunningham special forms...
nfs: searching for XYYXF special forms...
nfs: couldn't find special form
nfs: commencing polynomial search over range: 8192 - 8442
nfs: commencing polynomial search over range: 8692 - 8942
nfs: commencing polynomial search over range: 8942 - 9192
nfs: commencing polynomial search over range: 8442 - 8692
nfs: commencing polynomial search over range: 9692 - 9942
nfs: commencing polynomial search over range: 9442 - 9692
nfs: commencing polynomial search over range: 10192 - 10442
nfs: commencing polynomial search over range: 9192 - 9442
nfs: commencing polynomial search over range: 10692 - 10942
nfs: commencing polynomial search over range: 11192 - 11442
nfs: commencing polynomial search over range: 11442 - 11692
nfs: commencing polynomial search over range: 11692 - 11942
nfs: commencing polynomial search over range: 11942 - 12192
nfs: commencing polynomial search over range: 9942 - 10192
nfs: commencing polynomial search over range: 10942 - 11192
nfs: commencing polynomial search over range: 10442 - 10692
deadline: 8640000 CPU-seconds per coefficient
deadline: 8640000 CPU-seconds per coefficient
deadline: 8640000 CPU-seconds per coefficient
deadline: 8640000 CPU-seconds per coefficient
deadline: 8640000 CPU-seconds per coefficient
deadline: 8640000 CPU-seconds per coefficient
deadline: 8640000 CPU-seconds per coefficient
deadline: 8640000 CPU-seconds per coefficient
deadline: 8640000 CPU-seconds per coefficient
deadline: 8640000 CPU-seconds per coefficient
deadline: 8640000 CPU-seconds per coefficient
deadline: 8640000 CPU-seconds per coefficient
deadline: 8640000 CPU-seconds per coefficient
deadline: 8640000 CPU-seconds per coefficient
coeff 11760 specialq 1 - 15246007 other 33328 - 79987
Segmentation fault (core dumped)

Thanks,

EdH · 2020-08-13, 14:48

I think I failed to mention the msieve edit in my first post and this might be what's happening here. If you haven't made the msieve edit, check out post #81 and edit the appropriate file and then recompile both msieve and YAFU and see if that fixes it.

jasonp · 2020-09-04, 16:44

Sorry for the huge delay, fix has been committed to Msieve trunk.

EdH · 2020-09-04, 18:32

Quote:

Originally Posted by jasonp

Sorry for the huge delay, fix has been committed to Msieve trunk.

Thanks! I'll remove the edit references from the initial post sometime soon.

RedGolpe · 2020-09-28, 17:31

Hi all, Makefile currently contains the following code

Code:

#	modify the following line for your particular msieve installation
  ifeq ($(KNC),1)
    LIBS += -L../msieve/
  else
    ifeq ($(COMPILER),icc)
      LIBS += -L../msieve/lib/linux
    else
      LIBS += -L../msieve/lib/linux/gcc73/
    endif
  endif

in place of the one shown in the first post. I just changed the whole external ifeq bloc with

Code:

LIBS += -L../msieve

and it seems to work but you might want to update the instructions.

EdH · 2020-09-28, 18:11

Quote:

Originally Posted by RedGolpe

Hi all, Makefile currently contains the following code

Code:

#    modify the following line for your particular msieve installation
  ifeq ($(KNC),1)
    LIBS += -L../msieve/
  else
    ifeq ($(COMPILER),icc)
      LIBS += -L../msieve/lib/linux
    else
      LIBS += -L../msieve/lib/linux/gcc73/
    endif
  endif

in place of the one shown in the first post. I just changed the whole external ifeq bloc with

Code:

LIBS += -L../msieve

and it seems to work but you might want to update the instructions.

Thanks! I've tried to make it more generic so I don't have to keep up as much with B²'s changes.

Plutie · 2020-12-07, 02:29

Hello! I just switched over to Manjaro from W10, and can no longer build yafu. I have followed your guides on WSL to build it on Windows, but I can not build it on a native Linux system. I will include logs from the `make` command being run. (This goes beyond the space my terminal stores logs, so I cannot include it all.) This occurs with all make argument combinations.

Code:

/usr/bin/ld: factor/nfs/snfs.o:/home/uwu/Math/yafu/include/nfs.h:287: multiple definition of `NFS_ABORT'; factor/factor_common.o:/home/uwu/Math/yafu/include/nfs.h:287: first defined here 
/usr/bin/ld: factor/nfs/snfs.o:/home/uwu/Math/yafu/include/qs.h:864: multiple definition of `SIQS_ABORT'; factor/qs/msieve/lanczos.o:/home/uwu/Math/yafu/include/qs.h:864: first defined here 
/usr/bin/ld: factor/nfs/snfs.o:/home/uwu/Math/yafu/include/qs.h:862: multiple definition of `sieve_params'; factor/qs/msieve/lanczos.o:/home/uwu/Math/yafu/include/qs.h:862: first defined here 
/usr/bin/ld: factor/nfs/snfs.o:/home/uwu/Math/yafu/include/qs.h:860: multiple definition of `savefile_buf_off'; factor/qs/msieve/lanczos.o:/home/uwu/Math/yafu/include/qs.h:860: first defined here 
/usr/bin/ld: factor/nfs/snfs.o:/home/uwu/Math/yafu/include/qs.h:859: multiple definition of `savebuf'; factor/qs/msieve/lanczos.o:/home/uwu/Math/yafu/include/qs.h:859: first defined here 
/usr/bin/ld: factor/nfs/snfs.o:/home/uwu/Math/yafu/include/qs.h:702: multiple definition of `testRoots_ptr'; factor/qs/msieve/lanczos.o:/home/uwu/Math/yafu/include/qs.h:702: first defined here 
/usr/bin/ld: factor/nfs/snfs.o:/home/uwu/Math/yafu/include/qs.h:690: multiple definition of `nextRoots_ptr'; factor/qs/msieve/lanczos.o:/home/uwu/Math/yafu/include/qs.h:690: first defined here 
/usr/bin/ld: factor/nfs/snfs.o:/home/uwu/Math/yafu/include/qs.h:682: multiple definition of `firstRoots_ptr'; factor/qs/msieve/lanczos.o:/home/uwu/Math/yafu/include/qs.h:682: first defined here 
/usr/bin/ld: factor/nfs/snfs.o:/home/uwu/Math/yafu/include/qs.h:646: multiple definition of `resieve_med_ptr'; factor/qs/msieve/lanczos.o:/home/uwu/Math/yafu/include/qs.h:646: first defined here 
/usr/bin/ld: factor/nfs/snfs.o:/home/uwu/Math/yafu/include/qs.h:632: multiple definition of `tdiv_med_ptr'; factor/qs/msieve/lanczos.o:/home/uwu/Math/yafu/include/qs.h:632: first defined here 
/usr/bin/ld: factor/nfs/snfs.o:/home/uwu/Math/yafu/include/qs.h:613: multiple definition of `scan_ptr'; factor/qs/msieve/lanczos.o:/home/uwu/Math/yafu/include/qs.h:613: first defined here 
/usr/bin/ld: factor/nfs/snfs.o:/home/uwu/Math/yafu/include/qs.h:599: multiple definition of `med_sieve_ptr'; factor/qs/msieve/lanczos.o:/home/uwu/Math/yafu/include/qs.h:599: first defined here 
/usr/bin/ld: factor/nfs/snfs.o:/home/uwu/Math/yafu/include/factor.h:599: multiple definition of `test_qn_res'; factor/qs/msieve/lanczos.o:/home/uwu/Math/yafu/include/factor.h:599: first defined here 
/usr/bin/ld: factor/nfs/snfs.o:/home/uwu/Math/yafu/include/yafu.h:211: multiple definition of `gstr3'; factor/qs/msieve/lanczos.o:/home/uwu/Math/yafu/include/yafu.h:211: first defined here 
/usr/bin/ld: factor/nfs/snfs.o:/home/uwu/Math/yafu/include/yafu.h:211: multiple definition of `gstr2'; factor/qs/msieve/lanczos.o:/home/uwu/Math/yafu/include/yafu.h:211: first defined here 
/usr/bin/ld: factor/nfs/snfs.o:/home/uwu/Math/yafu/include/yafu.h:211: multiple definition of `gstr1'; factor/qs/msieve/lanczos.o:/home/uwu/Math/yafu/include/yafu.h:211: first defined here 
/usr/bin/ld: factor/nfs/snfs.o:/home/uwu/Math/yafu/include/yafu.h:208: multiple definition of `P_MAX'; factor/qs/msieve/lanczos.o:/home/uwu/Math/yafu/include/yafu.h:208: first defined here 
/usr/bin/ld: factor/nfs/snfs.o:/home/uwu/Math/yafu/include/yafu.h:207: multiple definition of `P_MIN'; factor/qs/msieve/lanczos.o:/home/uwu/Math/yafu/include/yafu.h:207: first defined here 
/usr/bin/ld: factor/nfs/snfs.o:/home/uwu/Math/yafu/include/yafu.h:206: multiple definition of `NUM_P'; factor/qs/msieve/lanczos.o:/home/uwu/Math/yafu/include/yafu.h:206: first defined here 
/usr/bin/ld: factor/nfs/snfs.o:/home/uwu/Math/yafu/include/yafu.h:205: multiple definition of `PRIMES'; factor/qs/msieve/lanczos.o:/home/uwu/Math/yafu/include/yafu.h:205: first defined here 
/usr/bin/ld: factor/nfs/snfs.o:/home/uwu/Math/yafu/include/yafu.h:200: multiple definition of `szSOEp'; factor/qs/msieve/lanczos.o:/home/uwu/Math/yafu/include/yafu.h:200: first defined here 
/usr/bin/ld: factor/nfs/snfs.o:/home/uwu/Math/yafu/include/yafu.h:196: multiple definition of `zFive'; factor/qs/msieve/lanczos.o:/home/uwu/Math/yafu/include/yafu.h:196: first defined here 
/usr/bin/ld: factor/nfs/snfs.o:/home/uwu/Math/yafu/include/yafu.h:196: multiple definition of `zThree'; factor/qs/msieve/lanczos.o:/home/uwu/Math/yafu/include/yafu.h:196: first defined here 
/usr/bin/ld: factor/nfs/snfs.o:/home/uwu/Math/yafu/include/yafu.h:196: multiple definition of `zTwo'; factor/qs/msieve/lanczos.o:/home/uwu/Math/yafu/include/yafu.h:196: first defined here 
/usr/bin/ld: factor/nfs/snfs.o:/home/uwu/Math/yafu/include/yafu.h:196: multiple definition of `zOne'; factor/qs/msieve/lanczos.o:/home/uwu/Math/yafu/include/yafu.h:196: first defined here 
/usr/bin/ld: factor/nfs/snfs.o:/home/uwu/Math/yafu/include/yafu.h:196: multiple definition of `zZero'; factor/qs/msieve/lanczos.o:/home/uwu/Math/yafu/include/yafu.h:196: first defined here 
/usr/bin/ld: factor/nfs/snfs.o:/home/uwu/Math/yafu/include/yafu.h:192: multiple definition of `sysname_sz'; factor/qs/msieve/lanczos.o:/home/uwu/Math/yafu/include/yafu.h:192: first defined here 
/usr/bin/ld: factor/nfs/snfs.o:/home/uwu/Math/yafu/include/yafu.h:191: multiple definition of `sysname'; factor/qs/msieve/lanczos.o:/home/uwu/Math/yafu/include/yafu.h:191: first defined here 
/usr/bin/ld: factor/nfs/snfs.o:/home/uwu/Math/yafu/include/yafu.h:186: multiple definition of `HAS_AVX2'; factor/qs/msieve/lanczos.o:/home/uwu/Math/yafu/include/yafu.h:186: first defined here 
/usr/bin/ld: factor/nfs/snfs.o:/home/uwu/Math/yafu/include/yafu.h:185: multiple definition of `HAS_AVX'; factor/qs/msieve/lanczos.o:/home/uwu/Math/yafu/include/yafu.h:185: first defined here 
/usr/bin/ld: factor/nfs/snfs.o:/home/uwu/Math/yafu/include/yafu.h:184: multiple definition of `HAS_SSE41'; factor/qs/msieve/lanczos.o:/home/uwu/Math/yafu/include/yafu.h:184: first defined here 
/usr/bin/ld: factor/nfs/snfs.o:/home/uwu/Math/yafu/include/yafu.h:183: multiple definition of `CLSIZE'; factor/qs/msieve/lanczos.o:/home/uwu/Math/yafu/include/yafu.h:183: first defined here 
/usr/bin/ld: factor/nfs/snfs.o:/home/uwu/Math/yafu/include/yafu.h:182: multiple definition of `L2CACHE'; factor/qs/msieve/lanczos.o:/home/uwu/Math/yafu/include/yafu.h:182: first defined here 
/usr/bin/ld: factor/nfs/snfs.o:/home/uwu/Math/yafu/include/yafu.h:182: multiple definition of `L1CACHE'; factor/qs/msieve/lanczos.o:/home/uwu/Math/yafu/include/yafu.h:182: first defined here 
/usr/bin/ld: factor/nfs/snfs.o:/home/uwu/Math/yafu/include/yafu.h:181: multiple definition of `CPU_ID_STR'; factor/qs/msieve/lanczos.o:/home/uwu/Math/yafu/include/yafu.h:181: first defined here 
/usr/bin/ld: factor/nfs/snfs.o:/home/uwu/Math/yafu/include/yafu.h:180: multiple definition of `VERBOSE_PROC_INFO'; factor/qs/msieve/lanczos.o:/home/uwu/Math/yafu/include/yafu.h:180: first defined here 
/usr/bin/ld: factor/nfs/snfs.o:/home/uwu/Math/yafu/include/yafu.h:179: multiple definition of `MEAS_CPU_FREQUENCY'; factor/qs/msieve/lanczos.o:/home/uwu/Math/yafu/include/yafu.h:179: first defined here 
/usr/bin/ld: factor/nfs/snfs.o:/home/uwu/Math/yafu/include/yafu.h:176: multiple definition of `PRIMES_TO_SCREEN'; factor/qs/msieve/lanczos.o:/home/uwu/Math/yafu/include/yafu.h:176: first defined here 
/usr/bin/ld: factor/nfs/snfs.o:/home/uwu/Math/yafu/include/yafu.h:175: multiple definition of `PRIMES_TO_FILE'; factor/qs/msieve/lanczos.o:/home/uwu/Math/yafu/include/yafu.h:175: first defined here 
/usr/bin/ld: factor/nfs/snfs.o:/home/uwu/Math/yafu/include/yafu.h:172: multiple definition of `LCGSTATE'; factor/qs/msieve/lanczos.o:/home/uwu/Math/yafu/include/yafu.h:172: first defined here 
/usr/bin/ld: factor/nfs/snfs.o:/home/uwu/Math/yafu/include/yafu.h:171: multiple definition of `gmp_randstate'; factor/qs/msieve/lanczos.o:/home/uwu/Math/yafu/include/yafu.h:171: first defined here 
/usr/bin/ld: factor/nfs/snfs.o:/home/uwu/Math/yafu/include/yafu.h:170: multiple definition of `g_rand'; factor/qs/msieve/lanczos.o:/home/uwu/Math/yafu/include/yafu.h:170: first defined here 
/usr/bin/ld: factor/nfs/snfs.o:/home/uwu/Math/yafu/include/yafu.h:167: multiple definition of `NO_CLK_TEST'; factor/qs/msieve/lanczos.o:/home/uwu/Math/yafu/include/yafu.h:167: first defined here 
/usr/bin/ld: factor/nfs/snfs.o:/home/uwu/Math/yafu/include/yafu.h:166: multiple definition of `scriptname'; factor/qs/msieve/lanczos.o:/home/uwu/Math/yafu/include/yafu.h:166: first defined here 
/usr/bin/ld: factor/nfs/snfs.o:/home/uwu/Math/yafu/include/yafu.h:165: multiple definition of `sessionname'; factor/qs/msieve/lanczos.o:/home/uwu/Math/yafu/include/yafu.h:165: first defined here 
/usr/bin/ld: factor/nfs/snfs.o:/home/uwu/Math/yafu/include/yafu.h:164: multiple definition of `batchfilename'; factor/qs/msieve/lanczos.o:/home/uwu/Math/yafu/include/yafu.h:164: first defined here 
/usr/bin/ld: factor/nfs/snfs.o:/home/uwu/Math/yafu/include/yafu.h:163: multiple definition of `CMD_LINE_REPEAT'; factor/qs/msieve/lanczos.o:/home/uwu/Math/yafu/include/yafu.h:163: first defined here 
/usr/bin/ld: factor/nfs/snfs.o:/home/uwu/Math/yafu/include/yafu.h:162: multiple definition of `USERSEED'; factor/qs/msieve/lanczos.o:/home/uwu/Math/yafu/include/yafu.h:162: first defined here 
/usr/bin/ld: factor/nfs/snfs.o:/home/uwu/Math/yafu/include/yafu.h:161: multiple definition of `USEBATCHFILE'; factor/qs/msieve/lanczos.o:/home/uwu/Math/yafu/include/yafu.h:161: first defined here 
/usr/bin/ld: factor/nfs/snfs.o:/home/uwu/Math/yafu/include/yafu.h:158: multiple definition of `LATHREADS'; factor/qs/msieve/lanczos.o:/home/uwu/Math/yafu/include/yafu.h:158: first defined here 
/usr/bin/ld: factor/nfs/snfs.o:/home/uwu/Math/yafu/include/yafu.h:157: multiple definition of `THREADS'; factor/qs/msieve/lanczos.o:/home/uwu/Math/yafu/include/yafu.h:157: first defined here 
/usr/bin/ld: factor/nfs/snfs.o:/home/uwu/Math/yafu/include/yafu.h:151: multiple definition of `NUM_WITNESSES'; factor/qs/msieve/lanczos.o:/home/uwu/Math/yafu/include/yafu.h:151: first defined here 
/usr/bin/ld: factor/nfs/snfs.o:/home/uwu/Math/yafu/include/yafu.h:148: multiple definition of `OBASE'; factor/qs/msieve/lanczos.o:/home/uwu/Math/yafu/include/yafu.h:148: first defined here 
/usr/bin/ld: factor/nfs/snfs.o:/home/uwu/Math/yafu/include/yafu.h:147: multiple definition of `IBASE'; factor/qs/msieve/lanczos.o:/home/uwu/Math/yafu/include/yafu.h:147: first defined here 
collect2: error: ld returned 1 exit status 
make: *** [Makefile:397: all] Error 1 
 [uwu@uwu yafu]$

2020-09-28, 17:31	#97
RedGolpe Aug 2006 Monza, Italy 73 Posts	Hi all, Makefile currently contains the following code Code: # modify the following line for your particular msieve installation ifeq ($(KNC),1) LIBS += -L../msieve/ else ifeq ($(COMPILER),icc) LIBS += -L../msieve/lib/linux else LIBS += -L../msieve/lib/linux/gcc73/ endif endif in place of the one shown in the first post. I just changed the whole external ifeq bloc with Code: LIBS += -L../msieve and it seems to work but you might want to update the instructions. Last fiddled with by RedGolpe on 2020-09-28 at 17:31

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
How I Install CADO-NFS onto my Ubuntu Machines	EdH	EdH	3	2019-06-24 03:42
How I Install GMP-ECM onto my Ubuntu Machines	EdH	EdH	12	2019-04-16 09:28
How I Install msieve onto my Ubuntu Machines	EdH	EdH	0	2018-02-23 14:43
How I Install ggnfs onto my Ubuntu Machines	EdH	EdH	0	2018-02-22 03:31
How I Install GMP onto my Ubuntu Machines	EdH	EdH	0	2018-02-21 23:48

2020-08-10, 15:08	#90
sivandahan7 Aug 2020 10₂ Posts	Hi, Thank you for installation instructions, It's looking good and working correctly ! But it's not working as I expecting, According to "lscpu" command, I have 8 Cpu(s) and 2 threads per cpu, Together it's 16 threads (this is the number I put on threads field of "yafu.ini" file), According to "top" and "monitor" Ubuntu tools, Actually I see yafu running on one cpu with 100% usage, What about other cpus and why yafu does no use them ? Do I miss something ? Thanks a lot,

2020-08-11, 08:15	#92
kruoli "Oliver" Sep 2017 Porta Westfalica, DE 2⁴×61 Posts	Please try running something with SIQS. It should look something like this: ==== sieving in progress ( 16 threads): 82576 relations needed ==== In some steps, yafu does not use more then 1 thread. You might have to add prefer_gmpecm to the ini-file and make sure the GMP-ECM binary's location is set correctly.

2020-08-13, 14:48	#94
EdH "Ed Hall" Dec 2009 Adirondack Mtns 1196₁₆ Posts	I think I failed to mention the msieve edit in my first post and this might be what's happening here. If you haven't made the msieve edit, check out post #81 and edit the appropriate file and then recompile both msieve and YAFU and see if that fixes it.

2020-09-04, 16:44	#95
jasonp Tribal Bullet Oct 2004 5×709 Posts	Sorry for the huge delay, fix has been committed to Msieve trunk.