Task 55772199
| Name | TF_76-77_163-178M_wu_19622_1 |
| Workunit | 50193108 |
| Created | 29 May 2026, 9:29:53 UTC |
| Sent | 29 May 2026, 9:30:39 UTC |
| Report deadline | 4 Jun 2026, 9:30:39 UTC |
| Received | 29 May 2026, 15:56:54 UTC |
| Server state | Over |
| Outcome | Computation error |
| Client state | Compute error |
| Exit status | 195 (0xc3) EXIT_CHILD_FAILED |
| Computer ID | 248535 |
| Run time | 2 min 56 sec |
| CPU time | 2 sec |
| Validate state | Invalid |
| Credit | 0.00 |
| Device peak FLOPS | 11,767.82 GFLOPS |
| Application version | TF v0.49 (cuda128) |
| Peak working set size | 146.22 MB |
| Peak swap size | 467.04 MB |
| Peak disk usage | 4.96 MB |
Stderr output
<core_client_version>8.2.11</core_client_version>
<![CDATA[
<message>
The operating system cannot run (null).
(0xc3) - exit code 195 (0xc3)</message>
<stderr_txt>
2026-05-29 18:41:02 (33336): wrapper (7.24.26018): starting
2026-05-29 18:41:02 (33336): wrapper: running mfaktc-win-64.exe (-d 0)
2026-05-29 18:41:02 (33336): wrapper: created child process 36152
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 13.2
CUDA device info
name NVIDIA GeForce RTX 4080 SUPER
compute capability 8.9
max threads per block 1024
max shared memory per MP 102400 bytes
number of multiprocessors 80
clock rate (CUDA cores) 2610 MHz
memory clock rate: 11501 MHz
memory bus width: 256 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=177084499 bit_min=76 bit_max=77 (86.42 GHz-days)
Starting trial factoring M177084499 from 2^76 to 2^77 (86.42 GHz-days)
k_min = 213338446199340
k_max = 426676892402165
Using GPU kernel "barrett87_mul32_gs"
Date Time | class Pct | time ETA | GHz-d/day Sieve Wait
May 29 18:41 | 0 0.1% | 3.497 55m54s | 2224.21 82485 n.a.%
May 29 18:41 | 5 0.2% | 4.054 1h04m | 1918.62 82485 n.a.%
May 29 18:41 | 9 0.3% | 4.053 1h04m | 1919.09 82485 n.a.%
May 29 18:41 | 12 0.4% | 4.054 1h04m | 1918.62 82485 n.a.%
May 29 18:41 | 17 0.5% | 4.054 1h04m | 1918.62 82485 n.a.%
May 29 18:41 | 21 0.6% | 4.054 1h04m | 1918.62 82485 n.a.%
May 29 18:41 | 24 0.7% | 3.977 1h03m | 1955.76 82485 n.a.%
May 29 18:41 | 29 0.8% | 2.663 42m15s | 2920.79 82485 n.a.%
May 29 18:41 | 32 0.9% | 3.565 56m30s | 2181.79 82485 n.a.%
May 29 18:41 | 44 1.0% | 4.050 1h04m | 1920.51 82485 n.a.%
May 29 18:41 | 45 1.1% | 4.052 1h04m | 1919.56 82485 n.a.%
May 29 18:41 | 56 1.2% | 4.050 1h03m | 1920.51 82485 n.a.%
May 29 18:41 | 57 1.4% | 4.050 1h03m | 1920.51 82485 n.a.%
2026-05-29 18:52:49 (36208): wrapper (7.24.26018): starting
2026-05-29 18:52:49 (36208): wrapper: running mfaktc-win-64.exe (-d 0)
2026-05-29 18:52:49 (36208): wrapper: created child process 20964
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 13.2
CUDA device info
name NVIDIA GeForce RTX 4080 SUPER
compute capability 8.9
max threads per block 1024
max shared memory per MP 102400 bytes
number of multiprocessors 80
clock rate (CUDA cores) 2610 MHz
memory clock rate: 11501 MHz
memory bus width: 256 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=177084499 bit_min=76 bit_max=77 (86.42 GHz-days)
Starting trial factoring M177084499 from 2^76 to 2^77 (86.42 GHz-days)
k_min = 213338446199340
k_max = 426676892402165
Using GPU kernel "barrett87_mul32_gs"
Date Time | class Pct | time ETA | GHz-d/day Sieve Wait
May 29 18:52 | 0 0.1% | 4.057 1h04m | 1917.20 82485 n.a.%
May 29 18:52 | 5 0.2% | 4.058 1h04m | 1916.72 82485 n.a.%
May 29 18:53 | 9 0.3% | 4.057 1h04m | 1917.20 82485 n.a.%
May 29 18:53 | 12 0.4% | 4.057 1h04m | 1917.20 82485 n.a.%
May 29 18:53 | 17 0.5% | 4.056 1h04m | 1917.67 82485 n.a.%
May 29 18:53 | 21 0.6% | 4.053 1h04m | 1919.09 82485 n.a.%
May 29 18:53 | 24 0.7% | 4.052 1h04m | 1919.56 82485 n.a.%
May 29 18:53 | 29 0.8% | 3.954 1h02m | 1967.14 82485 n.a.%
May 29 18:53 | 32 0.9% | 2.579 40m53s | 3015.92 82485 n.a.%
May 29 18:53 | 44 1.0% | 3.614 57m13s | 2152.20 82485 n.a.%
May 29 18:53 | 45 1.1% | 4.056 1h04m | 1917.67 82485 n.a.%
May 29 18:53 | 56 1.2% | 3.989 1h03m | 1949.88 82485 n.a.%
May 29 18:53 | 57 1.4% | 2.698 42m35s | 2882.90 82485 n.a.%
May 29 18:53 | 60 1.5% | 3.353 52m52s | 2319.73 82485 n.a.%
May 29 18:53 | 65 1.6% | 4.058 1h03m | 1916.72 82485 n.a.%
May 29 18:53 | 72 1.7% | 4.056 1h03m | 1917.67 82485 n.a.%
May 29 18:53 | 77 1.8% | 4.057 1h03m | 1917.20 82485 n.a.%
May 29 18:53 | 81 1.9% | 4.059 1h03m | 1916.25 82485 n.a.%
May 29 18:54 | 84 2.0% | 4.055 1h03m | 1918.14 82485 n.a.%
May 29 18:54 | 89 2.1% | 4.058 1h03m | 1916.72 82485 n.a.%
May 29 18:54 | 92 2.2% | 4.057 1h03m | 1917.20 82485 n.a.%
May 29 18:54 | 96 2.3% | 4.057 1h03m | 1917.20 82485 n.a.%
May 29 18:54 | 101 2.4% | 4.059 1h03m | 1916.25 82485 n.a.%
May 29 18:54 | 105 2.5% | 4.059 1h03m | 1916.25 82485 n.a.%
May 29 18:54 | 116 2.6% | 4.051 1h03m | 1920.04 82485 n.a.%
May 29 18:54 | 117 2.7% | 4.060 1h03m | 1915.78 82485 n.a.%
May 29 18:54 | 120 2.8% | 4.058 1h03m | 1916.72 82485 n.a.%
May 29 18:54 | 129 2.9% | 4.058 1h03m | 1916.72 82485 n.a.%
May 29 18:54 | 137 3.0% | 4.058 1h02m | 1916.72 82485 n.a.%
May 29 18:54 | 140 3.1% | 4.056 1h02m | 1917.67 82485 n.a.%
May 29 18:54 | 141 3.2% | 4.057 1h02m | 1917.20 82485 n.a.%
May 29 18:54 | 144 3.3% | 4.054 1h02m | 1918.62 82485 n.a.%
May 29 18:55 | 149 3.4% | 4.059 1h02m | 1916.25 82485 n.a.%
May 29 18:55 | 152 3.5% | 4.061 1h02m | 1915.31 82485 n.a.%
May 29 18:55 | 156 3.6% | 4.058 1h02m | 1916.72 82485 n.a.%
May 29 18:55 | 161 3.8% | 4.057 1h02m | 1917.20 82485 n.a.%
May 29 18:55 | 164 3.9% | 4.058 1h02m | 1916.72 82485 n.a.%
May 29 18:55 | 165 4.0% | 4.059 1h02m | 1916.25 82485 n.a.%
May 29 18:55 | 176 4.1% | 4.057 1h02m | 1917.20 82485 n.a.%
May 29 18:55 | 177 4.2% | 4.057 1h02m | 1917.20 82485 n.a.%
May 29 18:55 | 180 4.3% | 4.048 1h02m | 1921.46 82485 n.a.%
May 29 18:55 | 185 4.4% | 4.054 1h02m | 1918.62 82485 n.a.%
May 29 18:55 | 189 4.5% | 4.055 1h01m | 1918.14 82485 n.a.%
x mod p out of range!! x = 765266, p = 43735, pinv = 98493, r = 721531
May 29 18:55 | 192 4.6% | 1.644 25m06s | 4731.19 82485 n.a.%
ERROR: cudaGetLastError() returned 700: an illegal memory access was encountered
2026-05-29 18:55:43 (36208): mfaktc-win-64.exe exited; CPU time 2.531250
2026-05-29 18:55:43 (36208): app exit status: 0x1
2026-05-29 18:55:43 (36208): called boinc_finish(195)
</stderr_txt>
]]>
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