Select device - Get device info: WARNING: Unknown GPU name, assuming GCN. Please post the device name "gfx1100 (Advanced Micro Devices, Inc.)" to http://www.mersenneforum.org/showthread.php?t=15646 to have it added to mfakto. Set GPUType in mfakto.ini to select a GPU type yourself to avoid this warning. OpenCL device info name gfx1100 (Advanced Micro Devices, Inc.) device (driver) version OpenCL 2.0 (3590.0 (HSA1.1,LC)) maximum threads per block 1024 maximum threads per grid 1073741824 number of multiprocessors 48 (3072 compute elements) clock rate 2371 MHz Automatic parameters threads per grid 0 optimizing kernels for GCN Loading binary kernel file mfakto_Kernels.elf Compiling kernels. GPUSievePrimes (adjusted) 82486 GPUsieve minimum exponent 1055144 Started a simple selftest ... Selftest statistics number of tests 30 successful tests 30 selftest PASSED! got assignment: exp=312745357 bit_min=73 bit_max=74 (6.12 GHz-days) Starting trial factoring M312745357 from 2^73 to 2^74 (6.12GHz-days) Using GPU kernel "cl_barrett15_74_gs_2" Date Time | class Pct | time ETA | GHz-d/day Sieve Wait Oct 09 18:29 | 4619 100.0% | 0.232 0m00s | 2372.92 82486 0.00% no factor for M312745357 from 2^73 to 2^74 [mfakto 0.15pre7 cl_barrett15_74_gs_2] tf(): total time spent: 3m 41.448s (2386.55 GHz-days / day)

root@kymera:~/mfakto# more results.txt no factor for M312745357 from 2^73 to 2^74 [mfakto 0.15pre7 cl_barrett15_74_gs_2 ]

root@kymera:~/mfakto# ./mfakto-x64 --perftest [...] Best GPUSieveSize for SievePrimes: 54 310 1078 1078 1846 2614 3382 5686 8502 13622 19766 31030 47414 74038 113206 175670 270902 419382 647734 1075766 at MiB: 105 48 127 24 36 96 102 101 128 16 120 103 104 101 102 20 24 104 125 124 max M/s: 1199743.7 1078251.6 866078.2 747935.3 543832.0 524124.2 433830.7 464281.5 367334.0 418859.2 445633.7 297175.1 401461.2 229553.6 188893.7 149561.5 102728.1 80825.1 53634.5 36243.5 Survivors: 48.30% 35.49% 29.96% 29.96% 28.09% 27.01% 26.26% 24.87% 23.90% 22.86% 22.11% 21.26% 20.52% 19.80% 19.16% 18.53% 17.95% 17.41% 16.90% 16.36% removal rate average: 620327.4 695610.0 606612.3 523861.5 391064.5 382577.3 319915.2 348799.9 279529.3 323090.5 347108.6 234002.2 319085.1 184102.5 152707.9 121846.2 84287.3 66756.4 44569.5 30315.6 incremental: n/a 1363749.0 243329.1 -14.2 37227.9 156860.3 18844.4 -91603.0 17063.3 -31027.3 -52648.6 7592.9 -8451.2 3856.0 6857.7 4493.7 1902.8 2065.0 804.9 610.1 Runtime options Inifile mfakto.ini Verbosity 1 SieveOnGPU yes MoreClasses yes GPUSievePrimes 82486 GPUSieveProcessSize 24 Kib GPUSieveSize 96 Mib FlushInterval 8 WorkFile worktodo.txt ResultsFile results.txt Checkpoints enabled CheckpointDelay 120 s Stages enabled StopAfterFactor class PrintMode compact V5UserID none ComputerID none TimeStampInResults no VectorSize 2 GPUType AUTO SmallExp no UseBinfile mfakto_Kernels.elf Could not read TestExponents from mfakto.ini - not testing TF kernels

root@kymera:~/mfakto# ./mfakto-x64 -st [...] ######### testcase 34071/34071 (M112404491[91-92]) ######### Starting trial factoring M112404491 from 2^91 to 2^92 (4461450.54GHz-days) Date Time | class Pct | time ETA | GHz-d/day Sieve Wait Oct 09 17:05 | 1848 0.1% | 0.005 n.a. | n.a. 82486 0.00% M112404491 has a factor: 3941616367695054034124905537 (91.670846 bits, 2992945.937358 GHz-d) found 1 factor for M112404491 from 2^91 to 2^92 [mfakto 0.15pre7 cl_barrett32_92_gs_2] selftest for M112404491 passed (cl_barrett32_92_gs)! tf(): total time spent: 0.005s Selftest statistics number of tests 34026 successful tests 34026 selftest PASSED!

more stderr.txt 12:31:22 (1840): wrapper (7.16.26016): starting 12:31:22 (1840): wrapper (7.16.26016): starting 12:31:22 (1840): wrapper: running ./mfakto-x64 ()

more stderr.txt 12:31:22 (1840): wrapper (7.16.26016): starting 12:31:22 (1840): wrapper (7.16.26016): starting 12:31:22 (1840): wrapper: running ./mfakto-x64 ()