OS: Win10 20H2
CPU: Intel i7-3770k
GPU: AMD Radeon RX 570 4GB

--- Testcase 1 ---
WWocl version 1.03 by Bryan Little and Yves Gallot
Compiled Dec 27 2020 with GCC 8.1.0
A Wieferich and WallSunSun prime number search program
Based on wwwwcl by Mark Rodenkirch and primesieve by Kim Walisch
Command line: WWocl-win64.exe 18446744013709551615 18446744073709551615
Starting search at: 18446744013709551615
Stopping search at: 18446744073709551615
16:53:30 (11212): Can't open init data file - running in standalone mode
GPU Info:
Name: Ellesmere
Vendor: Advanced Micro Devices, Inc.
Driver: 3188.4
Compute Units: 32
Kernel profile: 20.035 ms. Estimated / Actual worksize: 35200000 / 19326346
Verifying GPU kernels using range 18446744013709551615 to 18446744013711551615...
GPU prime generator kernel test passed. (44952 PRPs)
GPU Wieferich/WallSunSun kernel tests passed. (193750445344149 checksum, 0 results)
Starting search...
Workunit complete. Average speed: 13.98 Million primes per second.
16:55:16 (11212): called boinc_finish(0)
-- Results testcase 1 --
509DE6503B2A6E8E

--- Testcase 2 ---
WWocl version 1.03 by Bryan Little and Yves Gallot
Compiled Dec 27 2020 with GCC 8.1.0
A Wieferich and WallSunSun prime number search program
Based on wwwwcl by Mark Rodenkirch and primesieve by Kim Walisch
Command line: WWocl-win64.exe 1 6e10
START below minimum. Starting search at 127
Starting search at: 127
Stopping search at: 60000000000
16:56:33 (7548): Can't open init data file - running in standalone mode
GPU Info:
Name: Ellesmere
Vendor: Advanced Micro Devices, Inc.
Driver: 3188.4
Compute Units: 32
Kernel profile: 10.002 ms. Estimated / Actual worksize: 35200000 / 38711947
Verifying GPU kernels using range 127 to 2000127...
GPU prime generator kernel test passed. (148957 PRPs)
GPU Wieferich/WallSunSun kernel tests passed. (142810567078 checksum, 3114 results)
Starting search...
Workunit complete. Average speed: 31.61 Million primes per second.
16:57:53 (7548): called boinc_finish(0)
-- Results testcase 2 --
127 is a Wieferich special instance (+1 +9 p)
(snipped)
59856984349 is a Wieferich special instance (-1 -322 p)
8B77D2DA053842DD

--- Testcase 3 ---
WWocl version 1.03 by Bryan Little and Yves Gallot
Compiled Dec 27 2020 with GCC 8.1.0
A Wieferich and WallSunSun prime number search program
Based on wwwwcl by Mark Rodenkirch and primesieve by Kim Walisch
Command line: WWocl-win64.exe 227630e10 227636e10
Starting search at: 2276300000000000
Stopping search at: 2276360000000000
16:58:28 (8944): Can't open init data file - running in standalone mode
GPU Info:
Name: Ellesmere
Vendor: Advanced Micro Devices, Inc.
Driver: 3188.4
Compute Units: 32
Kernel profile: 16.703 ms. Estimated / Actual worksize: 35200000 / 23181482
Verifying GPU kernels using range 2276300000000000 to 2276300002000000...
GPU prime generator kernel test passed. (56257 PRPs)
GPU Wieferich/WallSunSun kernel tests passed. (241694743280265 checksum, 0 results)
Starting search...
Workunit complete. Average speed: 17.34 Million primes per second.
17:00:07 (8944): called boinc_finish(0)
-- Results testcase 3 --
2276306935816523 is a Wieferich special instance (-1 -3 p)
6522CBC4CA2E4CFF

--- Testcase 4 ---
WWocl version 1.03 by Bryan Little and Yves Gallot
Compiled Dec 27 2020 with GCC 8.1.0
A Wieferich and WallSunSun prime number search program
Based on wwwwcl by Mark Rodenkirch and primesieve by Kim Walisch
Command line: WWocl-win64.exe 338772621946054253 338772681946054253
Starting search at: 338772621946054253
Stopping search at: 338772681946054253
17:00:36 (1944): Can't open init data file - running in standalone mode
GPU Info:
Name: Ellesmere
Vendor: Advanced Micro Devices, Inc.
Driver: 3188.4
Compute Units: 32
Kernel profile: 18.668 ms. Estimated / Actual worksize: 35200000 / 20741079
Verifying GPU kernels using range 338772621946054253 to 338772621948054253...
GPU prime generator kernel test passed. (49688 PRPs)
GPU Wieferich/WallSunSun kernel tests passed. (213679590312100 checksum, 1 results)
Starting search...
Workunit complete. Average speed: 16.39 Million primes per second.
17:02:09 (1944): called boinc_finish(0)
-- Results testcase 4 --
338772621946054253 is a WallSunSun special instance (+0 +91 p)
589A69274A6AB5A8

We'll probably increase the workunit size and the credit proportionally (meaning 3x workunit size -> 3x credit per workunit). Not set in stone, though.

That means with a decent GPU like a 1660 I will get more than 1 000 000 credits a day? Is it really good to have few subprojects where it's a breeze to get to jade while generally it's a tough accomplishment? There's already this large gap between GPU and CPU subprojects, but this would be somewhat extreme.

OS: Win10 1909
CPU: Intel i7-6700
GPU: Intel HD Graphics 530

--- Testcase 1 ---
WWcpu version 1.03 by Bryan Little and Yves Gallot
Compiled Dec 28 2020 with GCC 8.1.0
A Wieferich and WallSunSun prime number search program
Based on wwww by Mark Rodenkirch
Command line: C:\Users\hwmoppli\Downloads\WWcpu\WWcpu-win64.exe 18446744013709551615 18446744073709551615 -t 8
Starting search at: 18446744013709551615
Stopping search at: 18446744073709551615
Detected 8 logical processors. Using 8 threads.
Workunit complete.
14:09:13 (10904): called boinc_finish(0)
-- Results testcase 1 --
509DE6503B2A6E8E

--- Testcase 2 ---
WWcpu version 1.03 by Bryan Little and Yves Gallot
Compiled Dec 28 2020 with GCC 8.1.0
A Wieferich and WallSunSun prime number search program
Based on wwww by Mark Rodenkirch
Command line: C:\Users\hwmoppli\Downloads\WWcpu\WWcpu-win64.exe 1 6e10 -t 8
START below minimum. Starting search at 127
Starting search at: 127
Stopping search at: 60000000000
Detected 8 logical processors. Using 8 threads.
Workunit complete.
14:28:17 (244): called boinc_finish(0)
-- Results testcase 2 --
127 is a Wieferich special instance (+1 +9 p)
(snipped)
59856984349 is a Wieferich special instance (-1 -322 p)
8B77D2DA053842DD

--- Testcase 3 ---
WWcpu version 1.03 by Bryan Little and Yves Gallot
Compiled Dec 28 2020 with GCC 8.1.0
A Wieferich and WallSunSun prime number search program
Based on wwww by Mark Rodenkirch
Command line: C:\Users\hwmoppli\Downloads\WWcpu\WWcpu-win64.exe 227630e10 227636e10 -t 8
Starting search at: 2276300000000000
Stopping search at: 2276360000000000
Detected 8 logical processors. Using 8 threads.
Workunit complete.
15:00:31 (3592): called boinc_finish(0)
-- Results testcase 3 --
2276306935816523 is a Wieferich special instance (-1 -3 p)
6522CBC4CA2E4CFF

--- Testcase 4 ---
WWcpu version 1.03 by Bryan Little and Yves Gallot
Compiled Dec 28 2020 with GCC 8.1.0
A Wieferich and WallSunSun prime number search program
Based on wwww by Mark Rodenkirch
Command line: C:\Users\hwmoppli\Downloads\WWcpu\WWcpu-win64.exe 338772621946054253 338772681946054253 -t 8
Starting search at: 338772621946054253
Stopping search at: 338772681946054253
Detected 8 logical processors. Using 8 threads.
Workunit complete.
15:37:33 (5128): called boinc_finish(0)
-- Results testcase 4 --
338772621946054253 is a WallSunSun special instance (+0 +91 p)
589A69274A6AB5A8

WWocl version 1.03 by Bryan Little and Yves Gallot
Compiled Dec 27 2020 with GCC 8.1.0
A Wieferich and WallSunSun prime number search program
Based on wwwwcl by Mark Rodenkirch and primesieve by Kim Walisch
Command line: C:\Users\hwmoppli\Downloads\WWocl\WWocl-win64.exe 18446744013709551615 18446744073709551615
Starting search at: 18446744013709551615
Stopping search at: 18446744073709551615
15:39:26 (4128): Can't open init data file - running in standalone mode
GPU Info:
Name: Intel(R) HD Graphics 530
Vendor: Intel(R) Corporation
Driver: 26.20.100.7262
Compute Units: 24
Kernel profile: 41.254 ms. Estimated / Actual worksize: 2200000 / 586611
Verifying GPU kernels using range 18446744013709551615 to 18446744013710138226...
GPU prime generator kernel test passed. (13164 PRPs)
GPU Wieferich/WallSunSun kernel tests passed. (56639437789743 checksum, 0 results)
Starting search...
Workunit complete. Average speed: 0.39 Million primes per second.
16:41:11 (4128): called boinc_finish(0)
-- Results --
509DE6503B2A6E8E

OS: Win10 1803
System: HP Z440
CPU: Intel Xeon E5-1650 v4
GPU: AMD FirePro W71000

--- Testcase 1 ---
WWcpu version 1.03 by Bryan Little and Yves Gallot
Compiled Dec 28 2020 with GCC 8.1.0
A Wieferich and WallSunSun prime number search program
Based on wwww by Mark Rodenkirch
Command line: C:\Users\adminmo\Downloads\WWcpu\WWcpu-win64.exe 18446744013709551615 18446744073709551615 -t 12
Starting search at: 18446744013709551615
Stopping search at: 18446744073709551615
Detected 12 logical processors. Using 12 threads.
Workunit complete.
14:38:49 (9372): called boinc_finish(0)
-- Results testcase 1 --
509DE6503B2A6E8E

--- Testcase 2 ---
WWcpu version 1.03 by Bryan Little and Yves Gallot
Compiled Dec 28 2020 with GCC 8.1.0
A Wieferich and WallSunSun prime number search program
Based on wwww by Mark Rodenkirch
Command line: C:\Users\adminmo\Downloads\WWcpu\WWcpu-win64.exe 1 6e10 -t 12
START below minimum. Starting search at 127
Starting search at: 127
Stopping search at: 60000000000
Detected 12 logical processors. Using 12 threads.
Workunit complete.
15:15:39 (7448): called boinc_finish(0)
-- Results testcase 2 --
127 is a Wieferich special instance (+1 +9 p)
(snipped)
59856984349 is a Wieferich special instance (-1 -322 p)
8B77D2DA053842DD

--- Testcase 3 ---
WWcpu version 1.03 by Bryan Little and Yves Gallot
Compiled Dec 28 2020 with GCC 8.1.0
A Wieferich and WallSunSun prime number search program
Based on wwww by Mark Rodenkirch
Command line: C:\Users\adminmo\Downloads\WWcpu\WWcpu-win64.exe 227630e10 227636e10 -t 12
Starting search at: 2276300000000000
Stopping search at: 2276360000000000
Detected 12 logical processors. Using 12 threads.
Workunit complete.
15:31:34 (10596): called boinc_finish(0)
-- Results testcase 3 --
2276306935816523 is a Wieferich special instance (-1 -3 p)
6522CBC4CA2E4CFF

--- Testcase 3 ---
WWcpu version 1.03 by Bryan Little and Yves Gallot
Compiled Dec 28 2020 with GCC 8.1.0
A Wieferich and WallSunSun prime number search program
Based on wwww by Mark Rodenkirch
Command line: C:\Users\adminmo\Downloads\WWcpu\WWcpu-win64.exe 338772621946054253 338772681946054253 -t 12
Starting search at: 338772621946054253
Stopping search at: 338772681946054253
Detected 12 logical processors. Using 12 threads.
Workunit complete.
15:45:20 (5408): called boinc_finish(0)
-- Results testcase 4 --
338772621946054253 is a WallSunSun special instance (+0 +91 p)
589A69274A6AB5A8

--- Testcase 1 ---
WWocl version 1.03 by Bryan Little and Yves Gallot
Compiled Dec 27 2020 with GCC 8.1.0
A Wieferich and WallSunSun prime number search program
Based on wwwwcl by Mark Rodenkirch and primesieve by Kim Walisch
Command line: C:\Users\adminmo\Downloads\WWocl\WWocl-win64.exe 18446744013709551615 18446744073709551615
Starting search at: 18446744013709551615
Stopping search at: 18446744073709551615
14:53:20 (1980): Can't open init data file - running in standalone mode
GPU Info:
Name: Tonga
Vendor: Advanced Micro Devices, Inc.
Driver: 3075.13
Compute Units: 28
Kernel profile: 29.764 ms. Estimated / Actual worksize: 30800000 / 11382897
Verifying GPU kernels using range 18446744013709551615 to 18446744013711551615...
GPU prime generator kernel test passed. (44952 PRPs)
GPU Wieferich/WallSunSun kernel tests passed. (193750445344149 checksum, 0 results)
Starting search...
Workunit complete. Average speed: 8.20 Million primes per second.
14:56:15 (1980): called boinc_finish(0)
-- Results testcase 1 --
509DE6503B2A6E8E

--- Testcase 2 ---
WWocl version 1.03 by Bryan Little and Yves Gallot
Compiled Dec 27 2020 with GCC 8.1.0
A Wieferich and WallSunSun prime number search program
Based on wwwwcl by Mark Rodenkirch and primesieve by Kim Walisch
Command line: C:\Users\adminmo\Downloads\WWocl\WWocl-win64.exe 1 6e10
START below minimum. Starting search at 127
Starting search at: 127
Stopping search at: 60000000000
14:56:40 (6852): Can't open init data file - running in standalone mode
GPU Info:
Name: Tonga
Vendor: Advanced Micro Devices, Inc.
Driver: 3075.13
Compute Units: 28
Kernel profile: 14.767 ms. Estimated / Actual worksize: 30800000 / 22943336
Verifying GPU kernels using range 127 to 2000127...
GPU prime generator kernel test passed. (148957 PRPs)
GPU Wieferich/WallSunSun kernel tests passed. (142810567078 checksum, 3114 results)
Starting search...
Workunit complete. Average speed: 21.72 Million primes per second.
14:58:44 (6852): called boinc_finish(0)
-- Results testcase 2 --
127 is a Wieferich special instance (+1 +9 p)
(snipped)
59856984349 is a Wieferich special instance (-1 -322 p)
8B77D2DA053842DD

--- Testcase 3 ---
WWocl version 1.03 by Bryan Little and Yves Gallot
Compiled Dec 27 2020 with GCC 8.1.0
A Wieferich and WallSunSun prime number search program
Based on wwwwcl by Mark Rodenkirch and primesieve by Kim Walisch
Command line: C:\Users\adminmo\Downloads\WWocl\WWocl-win64.exe 227630e10 227636e10
Starting search at: 2276300000000000
Stopping search at: 2276360000000000
14:59:04 (8296): Can't open init data file - running in standalone mode
GPU Info:
Name: Tonga
Vendor: Advanced Micro Devices, Inc.
Driver: 3075.13
Compute Units: 28
Kernel profile: 24.881 ms. Estimated / Actual worksize: 30800000 / 13616552
Verifying GPU kernels using range 2276300000000000 to 2276300002000000...
GPU prime generator kernel test passed. (56257 PRPs)
GPU Wieferich/WallSunSun kernel tests passed. (241694743280265 checksum, 0 results)
Starting search...
Workunit complete. Average speed: 10.50 Million primes per second.
15:01:36 (8296): called boinc_finish(0)
-- Results testcase 3 --
2276306935816523 is a Wieferich special instance (-1 -3 p)
6522CBC4CA2E4CFF

--- Testcase 4 ---
WWocl version 1.03 by Bryan Little and Yves Gallot
Compiled Dec 27 2020 with GCC 8.1.0
A Wieferich and WallSunSun prime number search program
Based on wwwwcl by Mark Rodenkirch and primesieve by Kim Walisch
Command line: C:\Users\adminmo\Downloads\WWocl\WWocl-win64.exe 338772621946054253 338772681946054253
Starting search at: 338772621946054253
Stopping search at: 338772681946054253
15:02:19 (8996): Can't open init data file - running in standalone mode
GPU Info:
Name: Tonga
Vendor: Advanced Micro Devices, Inc.
Driver: 3075.13
Compute Units: 28
Kernel profile: 27.840 ms. Estimated / Actual worksize: 30800000 / 12169324
Verifying GPU kernels using range 338772621946054253 to 338772621948054253...
GPU prime generator kernel test passed. (49688 PRPs)
GPU Wieferich/WallSunSun kernel tests passed. (213679590312100 checksum, 1 results)
Starting search...
Workunit complete. Average speed: 9.52 Million primes per second.
15:04:57 (8996): called boinc_finish(0)
-- Results testcase 4 --
338772621946054253 is a WallSunSun special instance (+0 +91 p)
589A69274A6AB5A8

OS: Win10 1909
System: HP Z440
CPU: Intel Xeon E5-1650 v4
GPU: EIZO MED-XN91 (rebranded Nvidia Quadro P4000)

--- Testcase 1 ---
WWcpu version 1.03 by Bryan Little and Yves Gallot
Compiled Dec 28 2020 with GCC 8.1.0
A Wieferich and WallSunSun prime number search program
Based on wwww by Mark Rodenkirch
Command line: C:\Users\adminmo\Downloads\WWcpu\WWcpu-win64.exe 18446744013709551615 18446744073709551615 -t 12
Starting search at: 18446744013709551615
Stopping search at: 18446744073709551615
Detected 12 logical processors. Using 12 threads.
Resuming search from checkpoint. Current: 18446744031709551615
Workunit complete.
14:24:47 (5992): called boinc_finish(0)
-- Results testcase 1 --
509DE6503B2A6E8E

--- Testcase 2 ---
WWcpu version 1.03 by Bryan Little and Yves Gallot
Compiled Dec 28 2020 with GCC 8.1.0
A Wieferich and WallSunSun prime number search program
Based on wwww by Mark Rodenkirch
Command line: C:\Users\adminmo\Downloads\WWcpu\WWcpu-win64.exe 1 6e10 -t 12
START below minimum. Starting search at 127
Starting search at: 127
Stopping search at: 60000000000
Detected 12 logical processors. Using 12 threads.
Workunit complete.
14:34:40 (7384): called boinc_finish(0)
-- Results testcase 2 --
127 is a Wieferich special instance (+1 +9 p)
(snipped)
59856984349 is a Wieferich special instance (-1 -322 p)
8B77D2DA053842DD

--- Testcase 3 ---
WWcpu version 1.03 by Bryan Little and Yves Gallot
Compiled Dec 28 2020 with GCC 8.1.0
A Wieferich and WallSunSun prime number search program
Based on wwww by Mark Rodenkirch
Command line: C:\Users\adminmo\Downloads\WWcpu\WWcpu-win64.exe 227630e10 227636e10 -t 12
Starting search at: 2276300000000000
Stopping search at: 2276360000000000
Detected 12 logical processors. Using 12 threads.
Workunit complete.
14:48:30 (5800): called boinc_finish(0)
-- Results testcase 3 --
2276306935816523 is a Wieferich special instance (-1 -3 p)
6522CBC4CA2E4CFF

--- Testcase 4 ---
WWcpu version 1.03 by Bryan Little and Yves Gallot
Compiled Dec 28 2020 with GCC 8.1.0
A Wieferich and WallSunSun prime number search program
Based on wwww by Mark Rodenkirch
Command line: C:\Users\adminmo\Downloads\WWcpu\WWcpu-win64.exe 338772621946054253 338772681946054253 -t 12
Starting search at: 338772621946054253
Stopping search at: 338772681946054253
Detected 12 logical processors. Using 12 threads.
Workunit complete.
14:59:31 (8796): called boinc_finish(0)
-- Results testcase 4 --
338772621946054253 is a WallSunSun special instance (+0 +91 p)
589A69274A6AB5A8

--- Testcase 1 ---
WWocl version 1.03 by Bryan Little and Yves Gallot
Compiled Dec 27 2020 with GCC 8.1.0
A Wieferich and WallSunSun prime number search program
Based on wwwwcl by Mark Rodenkirch and primesieve by Kim Walisch
Command line: C:\Users\adminmo\Downloads\WWocl\WWocl-win64.exe 18446744013709551615 18446744073709551615
Starting search at: 18446744013709551615
Stopping search at: 18446744073709551615
14:07:30 (7176): Can't open init data file - running in standalone mode
GPU Info:
Name: EIZO Quadro MED-XN91
Vendor: NVIDIA Corporation
Driver: 460.89
Compute Units: 14
Detected Windows 10.0, using compute preemption.
Kernel profile: 119.825 ms. Estimated / Actual worksize: 308000000 / 257042039
Verifying GPU kernels using range 18446744013709551615 to 18446744013711551615...
GPU prime generator kernel test passed. (44952 PRPs)
GPU Wieferich/WallSunSun kernel tests passed. (193750445344149 checksum, 0 results)
Starting search...
Workunit complete. Average speed: 26.01 Million primes per second.
14:08:34 (7176): called boinc_finish(0)
-- Results testcase 1 --
509DE6503B2A6E8E

--- Testcase 2 ---
WWocl version 1.03 by Bryan Little and Yves Gallot
Compiled Dec 27 2020 with GCC 8.1.0
A Wieferich and WallSunSun prime number search program
Based on wwwwcl by Mark Rodenkirch and primesieve by Kim Walisch
Command line: C:\Users\adminmo\Downloads\WWocl\WWocl-win64.exe 1 6e10
START below minimum. Starting search at 127
Starting search at: 127
Stopping search at: 60000000000
14:09:27 (9024): Can't open init data file - running in standalone mode
GPU Info:
Name: EIZO Quadro MED-XN91
Vendor: NVIDIA Corporation
Driver: 460.89
Compute Units: 14
Detected Windows 10.0, using compute preemption.
Kernel profile: 75.051 ms. Estimated / Actual worksize: 308000000 / 410386159
Verifying GPU kernels using range 127 to 2000127...
GPU prime generator kernel test passed. (148957 PRPs)
GPU Wieferich/WallSunSun kernel tests passed. (142810567078 checksum, 3114 results)
Starting search...
Workunit complete. Average speed: 22.05 Million primes per second.
14:10:40 (9024): called boinc_finish(0)
--Results testcase 2 --
127 is a Wieferich special instance (+1 +9 p)
(snipped)
59856984349 is a Wieferich special instance (-1 -322 p)
8B77D2DA053842DD

--- Testcase 3 ---
WWocl version 1.03 by Bryan Little and Yves Gallot
Compiled Dec 27 2020 with GCC 8.1.0
A Wieferich and WallSunSun prime number search program
Based on wwwwcl by Mark Rodenkirch and primesieve by Kim Walisch
Command line: C:\Users\adminmo\Downloads\WWocl\WWocl-win64.exe 227630e10 227636e10
Starting search at: 2276300000000000
Stopping search at: 2276360000000000
14:11:14 (4868): Can't open init data file - running in standalone mode
GPU Info:
Name: EIZO Quadro MED-XN91
Vendor: NVIDIA Corporation
Driver: 460.89
Compute Units: 14
Detected Windows 10.0, using compute preemption.
Kernel profile: 92.505 ms. Estimated / Actual worksize: 308000000 / 332955464
Verifying GPU kernels using range 2276300000000000 to 2276300002000000...
GPU prime generator kernel test passed. (56257 PRPs)
GPU Wieferich/WallSunSun kernel tests passed. (241694743280265 checksum, 0 results)
Starting search...
Workunit complete. Average speed: 34.63 Million primes per second.
14:12:05 (4868): called boinc_finish(0)
-- Results testcase 3 --
2276306935816523 is a Wieferich special instance (-1 -3 p)
6522CBC4CA2E4CFF

--- Testcase 4 ---
WWocl version 1.03 by Bryan Little and Yves Gallot
Compiled Dec 27 2020 with GCC 8.1.0
A Wieferich and WallSunSun prime number search program
Based on wwwwcl by Mark Rodenkirch and primesieve by Kim Walisch
Command line: C:\Users\adminmo\Downloads\WWocl\WWocl-win64.exe 338772621946054253 338772681946054253
Starting search at: 338772621946054253
Stopping search at: 338772681946054253
14:13:28 (6448): Can't open init data file - running in standalone mode
GPU Info:
Name: EIZO Quadro MED-XN91
Vendor: NVIDIA Corporation
Driver: 460.89
Compute Units: 14
Detected Windows 10.0, using compute preemption.
Kernel profile: 114.618 ms. Estimated / Actual worksize: 308000000 / 268718587
Verifying GPU kernels using range 338772621946054253 to 338772621948054253...
GPU prime generator kernel test passed. (49688 PRPs)
GPU Wieferich/WallSunSun kernel tests passed. (213679590312100 checksum, 1 results)
Starting search...
Workunit complete. Average speed: 20.24 Million primes per second.
14:14:45 (6448): called boinc_finish(0)
-- Results testcase 4 --
338772621946054253 is a WallSunSun special instance (+0 +91 p)
589A69274A6AB5A8

C:\Users\xxx\Downloads>WWcpu-win64.exe 18446744013709551615 18446744073709551615 -t 4
WWcpu version 1.03 by Bryan Little and Yves Gallot
Compiled Dec 28 2020 with GCC 8.1.0
A Wieferich and WallSunSun prime number search program
Based on wwww by Mark Rodenkirch
Starting search at: 18446744013709551615
Stopping search at: 18446744073709551615
Detected 8 logical processors. Using 4 threads.
Beginning a new search with parameters from the command line
Tests done: 99.8333%
Checkpoint, current: 18446744073709551615
Workunit time: 1895 sec
Checksum: 509DE6503B2A6E8E
__________________________________________________________________________________________________

C:\Users\xxx\Downloads>WWcpu-win64.exe 1 6e10 -t 4
WWcpu version 1.03 by Bryan Little and Yves Gallot
Compiled Dec 28 2020 with GCC 8.1.0
A Wieferich and WallSunSun prime number search program
Based on wwww by Mark Rodenkirch
START below minimum. Starting search at 127
Starting search at: 127
Stopping search at: 60000000000
Detected 8 logical processors. Using 4 threads.
Beginning a new search with parameters from the command line
Tests done: 99.8833%
Checkpoint, current: 60000000000
Workunit time: 1730 sec
Checksum: 8B77D2DA053842DD
__________________________________________________________________________________________________

C:\Users\xxx\Downloads>WWcpu-win64.exe 227630e10 227636e10 -t 4
WWcpu version 1.03 by Bryan Little and Yves Gallot
Compiled Dec 28 2020 with GCC 8.1.0
A Wieferich and WallSunSun prime number search program
Based on wwww by Mark Rodenkirch
Starting search at: 2276300000000000
Stopping search at: 2276360000000000
Detected 8 logical processors. Using 4 threads.
Beginning a new search with parameters from the command line
Tests done: 99.9333%
Checkpoint, current: 2276360000000000
Workunit time: 1535 sec
Checksum: 6522CBC4CA2E4CFF
__________________________________________________________________________________________________

C:\Users\xxx\Downloads>WWcpu-win64.exe 338772621946054253 338772681946054253 -t 4
WWcpu version 1.03 by Bryan Little and Yves Gallot
Compiled Dec 28 2020 with GCC 8.1.0
A Wieferich and WallSunSun prime number search program
Based on wwww by Mark Rodenkirch
Starting search at: 338772621946054253
Stopping search at: 338772681946054253
Detected 8 logical processors. Using 4 threads.
Beginning a new search with parameters from the command line
Tests done: 99.9167%
Checkpoint, current: 338772681946054253
Workunit time: 1855 sec
Checksum: 589A69274A6AB5A8

There’s no FFTs or other types of transforms used in this app. It’s more like AP27 in that it works on very small numbers. There’s no need for fancy mathematical tricks to speed up multiplication since the numbers being worked on fit within a 64 bit integer. The CPU’s native hardware can directly operate on these numbers.

The CPU app uses both multithreading and hyperthreading well, so I recommend setting “number of threads” in the preferences to “no limit”, use “100% of the CPUs”, and let it run on all available threads. These tasks are sized for GPUs, so running it on all threads helps keep the run times down. My 3700X took less than 4 hours to run on 16 threads.

Overall memory usage is under 10 MB.