11)
Message boards :
Number crunching :
WW testing
(Message 144889)
Posted 1062 days ago by KylePolansky
In testing an old AMD Radeon HD 6750, I got the following error:
line 18: error: can't enable all OpenCL extensions or unrecognized OpenCL extension
#pragma OPENCL EXTENSION cl_khr_int64_base_atomics : enable
^
line 222: error: function "atom_add" declared implicitly
atom_add( &checksum[0], w_quot & UINT32_MAX );
^
2 errors detected in the compilation
In talking with mfl0p on Discord, it appears that the graphics card must support the "cl_khr_int64_base_atomics" (64 bit atomic operations) OpenCL extension.
I assume this requirement will be better documented when the project goes live, just wanted to put a note here incase anyone else happens to come across this issue.
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12)
Message boards :
Number crunching :
WW testing
(Message 144886)
Posted 1062 days ago by KylePolansky
I'm not a mac user, but I decided to give this a try on a friend's mac mini to see what would happen.
Running binary from commit 84a5282 I got the following error:
./WW_opencl_macintel64 461168595e10 461168602e10 -debug
WWocl version 1.0 by Bryan Little
Compiled Oct 29 2020 with GCC Apple LLVM 12.0.0 (clang-1200.0.32.2)
A Wieferich and WallSunSun prime number search program
Based on wwwwcl by Mark Rodenkirch and primesieve by Kim Walisch
Debug info enabled.
END exceeds maximum. Stopping search at 4611686018427387904
Starting search at: 4611685950000000000
Stopping search at: 4611686018427387904
init_data.xml not found, using device 0.
GPU Info:
Name: Intel(R) UHD Graphics 630
Vendor: Intel Inc.
Driver: 1.2(Aug 31 2020 22:24:18)
Compute Units: 24
Compiling clearn...
Kernel workgroup size: 256
Compiling wieferich...
Error on buildProgram
RequestingInfo
Build Log for wieferich_program:
<program source>:117:15: warning: comparison of integers of different signs: 'long' and 'ulong' (aka 'unsigned long')
if (xb_rem >= thePrime) { xb_rem -= thePrime; }
~~~~~~ ^ ~~~~~~~~
<program source>:169:14: warning: comparison of integers of different signs: 'long' and 'ulong' (aka 'unsigned long')
if (xb_rem >= thePrime) { xb_rem -= thePrime; }
~~~~~~ ^ ~~~~~~~~
error: undefined reference to `_Z8atom_addPVU8CLglobalmm()'
error: backend compiler failed build.
CL_BUILD_PROGRAM_FAILURE
This error is pretty cryptic, so i'm not sure if this is an error with the binary, using integrated GPUs, or even a driver/opencl install error. I suspect BOINC won't run on integrated GPUs so it's likely not a valid test, but decided to post here incase it helps out.
Other computer stats:
Model: Mac mini (2018)
Processor: 3.2 GHz 6-Core Intel Core i7
OS: Version 10.15.7
Graphics: Intel UHD Graphics 630 1536MB
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13)
Message boards :
Number crunching :
WW testing
(Message 144500)
Posted 1072 days ago by KylePolansky
Here's more Linux CPU Singlethreaded Results:
1) ./WWcpu-linux64 461168595e10 461168602e10
Workunit time: 14361 sec
Checksum: 67029FBFBC1AEFB0
2) ./WWcpu-linux64 1 6e10
Workunit time: 11863 sec
Checksum: 2F32CAD23BA5B1CA
3) ./WWcpu-linux64 227630e10 227636e10
Workunit time: 12807 sec
Checksum: B8B040FA3813FEB2
Computer Info:
CPU: Intel(R) Xeon(R) CPU E5-2673 v4 @ 2.30GHz
OS: 20.04.1 LTS (Focal Fossa)
Notes: Ran inside a pod on AKS (Azure Kubernetes Service) Version 1.17.9, Node Size Standard_D2s_v3
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14)
Message boards :
Number crunching :
WW testing
(Message 144489)
Posted 1072 days ago by KylePolansky
Linux CPU Singlethreaded Results:
1) ./WWcpu-linux64 461168595e10 461168602e10
Workunit time: 13722 sec
Checksum: 67029FBFBC1AEFB0
2) ./WWcpu-linux64 1 6e10
Workunit time: 12334 sec
Checksum: 2F32CAD23BA5B1CA
3) ./WWcpu-linux64 227630e10 227636e10
Workunit time: 13649 sec
Checksum: B8B040FA3813FEB2
Computer specs:
CPU Processors: 8, GenuineIntel, Intel(R) Core(TM) i7 CPU 860 @ 2.80GHz [Family 6 Model 30 Stepping 5]
Os Linux Ubuntu, Ubuntu 20.04.1 LTS [5.4.0-52-generic|libc 2.31 (Ubuntu GLIBC 2.31-0ubuntu9.1)]
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15)
Message boards :
Number crunching :
WW testing
(Message 144447)
Posted 1073 days ago by KylePolansky
Windows AMD GPU Results:
1) .\WWocl-win64.exe 461168595e10 461168602e10
Workunit complete. Average speed: 1.34 Million primes per second.
Checksum: 67029FBFBC1AEFB0
2) .\WWocl-win64.exe 1 6e10
Workunit complete. Average speed: 3.02 Million primes per second.
Checksum: 2F32CAD23BA5B1CA
3) .\WWocl-win64.exe 227630e10 227636e10
Workunit complete. Average speed: 1.94 Million primes per second.
Checksum: B8B040FA3813FEB2
Program output GPU Info:
Name: gfx804
Vendor: Advanced Micro Devices, Inc.
Driver: 2906.10
Compute Units: 8
Task Manager Info:
CPU: Intel(R) Core(TM) i9-9900 CPU @ 3.10GHz
GPU: AMD Radeon Pro WX 3100
GPU Driver version: 26.20.13032.13
Winver: Version 1909 (OS Build 18363.1139)
---
It seems like the Linux CPU Singlethreaded tasks are taking a bit longer to finish. I'll let it run overnight and report in the morning.
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16)
Message boards :
Number crunching :
WW testing
(Message 144445)
Posted 1073 days ago by KylePolansky
I'll reserve:
Windows-AMD GPU
Linux-CPU Singlethreaded
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17)
Message boards :
Number crunching :
Badges III
(Message 143885)
Posted 1089 days ago by KylePolansky
My first double badge!
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18)
Message boards :
Number crunching :
Pierre de Fermat's Birthday Challenge
(Message 111809)
Posted 2137 days ago by KylePolansky
Since it seems like we had more people (or at least more throughput than was expected) I'm curious as to what the participation percentage is.
Active users vs Challenge participants; overall vs this challenge.
For me personally, Numberphile's YouTube video about Proth Primes (https://www.youtube.com/watch?v=fcVjitaM3LY) renewed my interest in PrimeGrid, and this challenge just happened to be timed well with with that. Very fun way to get back into it!
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