mersenneforum.org  

Go Back   mersenneforum.org > Factoring Projects > NFS@Home

Reply
 
Thread Tools
Old 2022-05-20, 03:14   #56
frmky
 
frmky's Avatar
 
Jul 2003
So Cal

2·23·53 Posts
Default

Quote:
Originally Posted by RichD View Post
71111_381 has built a matrix. Too big for my GPU. Should have factors in less than 60 hours.
Can you give it a try on your gpu with
Code:
./msieve -nc2 "skip_matbuild=1 use_managed=1" -g 0 -v
I'm curious if it will run, and if so how long it will take.
frmky is offline   Reply With Quote
Old 2022-05-20, 12:11   #57
RichD
 
RichD's Avatar
 
Sep 2008
Kansas

70678 Posts
Default

Quote:
Originally Posted by frmky View Post
Can you give it a try on your gpu with
Code:
./msieve -nc2 "skip_matbuild=1 use_managed=1" -g 0 -v
I'm curious if it will run, and if so how long it will take.
I still get OUT_OF_MEMORY. The size of the matrix is 7.56M.
RichD is offline   Reply With Quote
Old 2022-05-20, 12:32   #58
RichD
 
RichD's Avatar
 
Sep 2008
Kansas

3·1,213 Posts
Default

Quote:
Originally Posted by RichD View Post
I still get OUT_OF_MEMORY. The size of the matrix is 7.56M.
Oops, I typed used_managed=1. Now running with ETA 28+ hours.
RichD is offline   Reply With Quote
Old 2022-05-21, 19:33   #59
RichD
 
RichD's Avatar
 
Sep 2008
Kansas

3×1,213 Posts
Default 71111_381 is factored

Code:
p78 factor: 762750299372672355883268454137776253787176740120346983485993070985177851516039
p87 factor: 349377274288344974698603745794705474301449007747822341745620295139645750449066123036479
99M unique relations built a 7.56M matrix using TD=120.
Solve time about 28 hours on GTX 1660 (6GB), VBITS=256, use_managed=1.

Look like the GPU memory was a little tight.
Code:
commencing Lanczos iteration 
vector memory use: 1614.2 MB 
dense rows memory use: 230.6 MB 
sparse matrix memory use: 5497.9 MB 
memory use: 7342.8 MB 
Allocated 517.7 MB for SpMV library 
Allocated 517.7 MB for SpMV library


Log at: https://pastebin.com/azeWA2XU
RichD is offline   Reply With Quote
Old 2022-05-21, 23:33   #60
frmky
 
frmky's Avatar
 
Jul 2003
So Cal

2×23×53 Posts
Default

Yep. With the managed memory option, the program stores portions of the sparse matrix blocks in main memory if necessary and moves them to the GPU when they are needed in each iteration. This significantly increases traffic on the PCIe bus. The GPU spends much more time waiting for data, but it can still be faster than running on the CPU.
frmky is offline   Reply With Quote
Old 2022-05-24, 19:52   #61
RichD
 
RichD's Avatar
 
Sep 2008
Kansas

3×1,213 Posts
Default

Taking 126__127_7m1.
RichD is offline   Reply With Quote
Old 2022-05-25, 04:40   #62
richs
 
richs's Avatar
 
"Rich"
Aug 2002
Benicia, California

1,553 Posts
Default

Taking 72223_245
richs is offline   Reply With Quote
Old 2022-05-26, 20:02   #63
richs
 
richs's Avatar
 
"Rich"
Aug 2002
Benicia, California

1,553 Posts
Default 72223_245 factored

Code:
p61 factor: 2102566791387466632448419655029903561085790971150084562135149
p89 factor: 61742469877737080442278649390467103244337617054848672724667378258844197673925682100250493
Approximately 4 hours on 6 threads of a Core i7-10750H with 16 GB memory for a 2.14M matrix at TD=130.

Log attached and at https://pastebin.com/ahqPPTaf

Factors reported to factordb and Studio Kamada.
Attached Files
File Type: log msieve.log (11.3 KB, 4 views)
richs is offline   Reply With Quote
Old 2022-05-27, 00:52   #64
RichD
 
RichD's Avatar
 
Sep 2008
Kansas

70678 Posts
Default 126__127_7m1 factored

Code:
p73 factor: 1389370807537644850457220186716158435702624687245915808336684977801386389
p106 factor: 3876599714493456973044198680302223391853977361111696109004364392838186145973313523108830715065226722317349
110M unique relations built a 6.95M matrix using TD=112. (116 failed)
Solve time about 25.5 hours using GTX 1660 (6GB), --use_managed=1.

Log at: https://pastebin.com/aTmUympa
RichD is offline   Reply With Quote
Old 2022-05-27, 20:21   #65
richs
 
richs's Avatar
 
"Rich"
Aug 2002
Benicia, California

155310 Posts
Default

Taking 74441_229
richs is offline   Reply With Quote
Old 2022-06-01, 03:45   #66
richs
 
richs's Avatar
 
"Rich"
Aug 2002
Benicia, California

1,553 Posts
Default

Taking 44447_239
richs is offline   Reply With Quote
Reply

Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
2021 15e post processing reservations and results swellman NFS@Home 188 2021-12-30 21:10
2020 15e post processing reservations and results swellman NFS@Home 112 2020-12-29 22:58
2019 14e post processing reservations and results swellman NFS@Home 862 2019-12-31 10:51
2018 15e post-processing reservations and results fivemack NFS@Home 221 2019-01-04 13:08
2018 14e post processing reservations and results pinhodecarlos NFS@Home 551 2019-01-04 13:06

All times are UTC. The time now is 15:25.


Sat Aug 13 15:25:14 UTC 2022 up 37 days, 10:12, 2 users, load averages: 1.33, 1.02, 0.98

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2022, Jelsoft Enterprises Ltd.

This forum has received and complied with 0 (zero) government requests for information.

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation.
A copy of the license is included in the FAQ.

≠ ± ∓ ÷ × · − √ ‰ ⊗ ⊕ ⊖ ⊘ ⊙ ≤ ≥ ≦ ≧ ≨ ≩ ≺ ≻ ≼ ≽ ⊏ ⊐ ⊑ ⊒ ² ³ °
∠ ∟ ° ≅ ~ ‖ ⟂ ⫛
≡ ≜ ≈ ∝ ∞ ≪ ≫ ⌊⌋ ⌈⌉ ∘ ∏ ∐ ∑ ∧ ∨ ∩ ∪ ⨀ ⊕ ⊗ 𝖕 𝖖 𝖗 ⊲ ⊳
∅ ∖ ∁ ↦ ↣ ∩ ∪ ⊆ ⊂ ⊄ ⊊ ⊇ ⊃ ⊅ ⊋ ⊖ ∈ ∉ ∋ ∌ ℕ ℤ ℚ ℝ ℂ ℵ ℶ ℷ ℸ 𝓟
¬ ∨ ∧ ⊕ → ← ⇒ ⇐ ⇔ ∀ ∃ ∄ ∴ ∵ ⊤ ⊥ ⊢ ⊨ ⫤ ⊣ … ⋯ ⋮ ⋰ ⋱
∫ ∬ ∭ ∮ ∯ ∰ ∇ ∆ δ ∂ ℱ ℒ ℓ
𝛢𝛼 𝛣𝛽 𝛤𝛾 𝛥𝛿 𝛦𝜀𝜖 𝛧𝜁 𝛨𝜂 𝛩𝜃𝜗 𝛪𝜄 𝛫𝜅 𝛬𝜆 𝛭𝜇 𝛮𝜈 𝛯𝜉 𝛰𝜊 𝛱𝜋 𝛲𝜌 𝛴𝜎𝜍 𝛵𝜏 𝛶𝜐 𝛷𝜙𝜑 𝛸𝜒 𝛹𝜓 𝛺𝜔