Task 54052136
| Name | TF_76-77_164-167M_wu_20717_1 |
| Workunit | 49037368 |
| Created | 20 Apr 2026, 10:45:16 UTC |
| Sent | 20 Apr 2026, 10:50:20 UTC |
| Report deadline | 25 Apr 2026, 16:50:20 UTC |
| Received | 20 Apr 2026, 10:59:40 UTC |
| Server state | Over |
| Outcome | Computation error |
| Client state | Compute error |
| Exit status | 195 (0xc3) EXIT_CHILD_FAILED |
| Computer ID | 225596 |
| Run time | 1 min 24 sec |
| CPU time | 1 sec |
| Validate state | Invalid |
| Credit | 0.00 |
| Device peak FLOPS | 1,022.41 GFLOPS |
| Application version | TF v0.49 (cuda128) |
| Peak working set size | 112.32 MB |
| Peak swap size | 274.32 MB |
| Peak disk usage | 4.95 MB |
Stderr output
<core_client_version>8.0.2</core_client_version>
<![CDATA[
<message>
(unknown error) (0) - exit code 195 (0xc3)</message>
<stderr_txt>
2026-04-20 20:55:15 (9320): wrapper (7.24.26018): starting
2026-04-20 20:55:15 (9320): wrapper: running mfaktc-win-64.exe (-d 0)
2026-04-20 20:55:15 (9320): wrapper: created child process 4776
mfaktc v0.24.0 (64-bit build)
Compile-time options
THREADS_PER_BLOCK 256
SIEVE_SIZE_LIMIT 32 kiB
SIEVE_SIZE 193154 bits
SIEVE_SPLIT 250
MORE_CLASSES enabled
Runtime options
SievePrimes 25000
SievePrimesAdjust 1
SievePrimesMin 5000
SievePrimesMax 100000
NumStreams 3
CPUStreams 3
GridSize 3
GPU sieving enabled
GPUSievePrimes 82486
GPUSieveSize 512 Mib
GPUSieveProcessSize 16 Kib
Checkpoints enabled
CheckpointDelay 60 s
WorkFileAddDelay 600 s
Stages disabled
StopAfterFactor bit level
PrintMode compact
Logging disabled
V5UserID (none)
ComputerID (none)
AllowSleep yes
Warning: Cannot read LegacyResultsTxt from mfaktc.ini, set to 0 by default
LegacyResultsTxt no
TimeStampInResults no
Warning: Cannot read TimestampOnSameLine from mfaktc.ini, set to 0 by default
TimestampOnSameLine no
Warning: Cannot read ResultsFileTimestampInterval from mfaktc.ini, set to 1 by default
CUDA version info
binary compiled for CUDA 12.8
CUDA runtime version 12.8
CUDA driver version 13.0
CUDA device info
name NVIDIA GeForce GTX 1060 6GB
compute capability 6.1
max threads per block 1024
max shared memory per MP 98304 bytes
number of multiprocessors 10
clock rate (CUDA cores) 1809 MHz
memory clock rate: 4004 MHz
memory bus width: 192 bits
Automatic parameters
threads per grid 655360
GPUSievePrimes (adjusted) 82486
GPUsieve minimum exponent 1055144
running a simple self-test...
Self-test statistics
number of tests 104
successful tests 104
self-test PASSED!
got assignment: exp=165864211 bit_min=76 bit_max=77 (92.27 GHz-days)
Starting trial factoring M165864211 from 2^76 to 2^77 (92.27 GHz-days)
k_min = 227770244315460
k_max = 455540488634491
Using GPU kernel "barrett87_mul32_gs"
Date Time | class Pct | time ETA | GHz-d/day Sieve Wait
Apr 20 20:55 | 0 0.1% | 13.977 3h43m | 594.14 82485 n.a.%
Apr 20 20:55 | 8 0.2% | 13.996 3h43m | 593.33 82485 n.a.%
Apr 20 20:55 | 9 0.3% | 14.080 3h44m | 589.79 82485 n.a.%
Apr 20 20:56 | 20 0.4% | 14.110 3h44m | 588.54 82485 n.a.%
Apr 20 20:56 | 21 0.5% | 14.152 3h45m | 586.79 82485 n.a.%
Apr 20 20:56 | 24 0.6% | 14.211 3h45m | 584.35 82485 n.a.%
Apr 20 20:56 | 36 0.7% | 14.245 3h46m | 582.96 82485 n.a.%
Apr 20 20:57 | 41 0.8% | 14.283 3h46m | 581.41 82485 n.a.%
Apr 20 20:57 | 44 0.9% | 14.362 3h47m | 578.21 82485 n.a.%
Apr 20 20:57 | 45 1.0% | 14.462 3h48m | 574.21 82485 n.a.%
Apr 20 20:57 | 48 1.1% | 14.585 3h50m | 569.37 82485 n.a.%
Apr 20 20:58 | 53 1.2% | 14.728 3h52m | 563.84 82485 n.a.%
Apr 20 20:58 | 56 1.4% | 14.869 3h54m | 558.49 82485 n.a.%
Apr 20 20:58 | 60 1.5% | 14.916 3h55m | 556.73 82485 n.a.%
2026-04-20 21:00:05 (7700): wrapper (7.24.26018): starting
2026-04-20 21:00:05 (7700): wrapper: running mfaktc-win-64.exe (-d 0)
2026-04-20 21:00:05 (7700): wrapper: created child process 4340
mfaktc v0.24.0 (64-bit build)
Compile-time options
THREADS_PER_BLOCK 256
SIEVE_SIZE_LIMIT 32 kiB
SIEVE_SIZE 193154 bits
SIEVE_SPLIT 250
MORE_CLASSES enabled
Runtime options
SievePrimes 25000
SievePrimesAdjust 1
SievePrimesMin 5000
SievePrimesMax 100000
NumStreams 3
CPUStreams 3
GridSize 3
GPU sieving enabled
GPUSievePrimes 82486
GPUSieveSize 512 Mib
GPUSieveProcessSize 16 Kib
Checkpoints enabled
CheckpointDelay 60 s
WorkFileAddDelay 600 s
Stages disabled
StopAfterFactor bit level
PrintMode compact
Logging disabled
V5UserID (none)
ComputerID (none)
AllowSleep yes
Warning: Cannot read LegacyResultsTxt from mfaktc.ini, set to 0 by default
LegacyResultsTxt no
TimeStampInResults no
Warning: Cannot read TimestampOnSameLine from mfaktc.ini, set to 0 by default
TimestampOnSameLine no
Warning: Cannot read ResultsFileTimestampInterval from mfaktc.ini, set to 1 by default
CUDA version info
binary compiled for CUDA 12.8
CUDA runtime version 12.8
CUDA driver version 13.0
CUDA device info
name NVIDIA GeForce GTX 1060 6GB
compute capability 6.1
max threads per block 1024
max shared memory per MP 98304 bytes
number of multiprocessors 10
clock rate (CUDA cores) 1809 MHz
memory clock rate: 4004 MHz
memory bus width: 192 bits
Automatic parameters
threads per grid 655360
GPUSievePrimes (adjusted) 82486
GPUsieve minimum exponent 1055144
running a simple self-test...
Self-test statistics
number of tests 104
successful tests 104
self-test PASSED!
got assignment: exp=165864211 bit_min=76 bit_max=77 (92.27 GHz-days)
Starting trial factoring M165864211 from 2^76 to 2^77 (92.27 GHz-days)
k_min = 227770244315460
k_max = 455540488634491
Using GPU kernel "barrett87_mul32_gs"
Date Time | class Pct | time ETA | GHz-d/day Sieve Wait
Apr 20 21:00 | 0 0.1% | 14.212 3h47m | 584.31 82485 n.a.%
Apr 20 21:00 | 8 0.2% | 14.248 3h47m | 582.84 82485 n.a.%
Apr 20 21:00 | 9 0.3% | 14.330 3h48m | 579.50 82485 n.a.%
Apr 20 21:01 | 20 0.4% | 14.432 3h49m | 575.40 82485 n.a.%
Apr 20 21:01 | 21 0.5% | 14.560 3h51m | 570.35 82485 n.a.%
Apr 20 21:01 | 24 0.6% | 8.936 2h22m | 929.30 82485 n.a.%
ERROR: cudaGetLastError() returned 700: an illegal memory access was encountered
2026-04-20 21:01:27 (7700): mfaktc-win-64.exe exited; CPU time 1.140625
2026-04-20 21:01:27 (7700): app exit status: 0x1
2026-04-20 21:01:27 (7700): called boinc_finish(195)
</stderr_txt>
]]>
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