Task 55755189
| Name | TF_76-77_174-176M_wu_28912_1 |
| Workunit | 49959679 |
| Created | 25 May 2026, 21:37:25 UTC |
| Sent | 25 May 2026, 21:48:53 UTC |
| Report deadline | 31 May 2026, 21:48:53 UTC |
| Received | 26 May 2026, 1:36:57 UTC |
| Server state | Over |
| Outcome | Computation error |
| Client state | Compute error |
| Exit status | 195 (0xc3) EXIT_CHILD_FAILED |
| Computer ID | 248535 |
| Run time | 12 sec |
| CPU time | 1 sec |
| Validate state | Invalid |
| Credit | 0.00 |
| Device peak FLOPS | 11,767.82 GFLOPS |
| Application version | TF v0.49 (cuda128) |
| Peak working set size | 146.07 MB |
| Peak swap size | 567.74 MB |
| Peak disk usage | 4.95 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>
2026-05-26 04:34:50 (20604): wrapper (7.24.26018): starting
2026-05-26 04:34:50 (20604): wrapper: running mfaktc-win-64.exe (-d 0)
2026-05-26 04:34:51 (20604): wrapper: created child process 12320
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=175641733 bit_min=76 bit_max=77 (87.13 GHz-days)
Starting trial factoring M175641733 from 2^76 to 2^77 (87.13 GHz-days)
k_min = 215090862617400
k_max = 430181725239037
Using GPU kernel "barrett87_mul32_gs"
Date Time | class Pct | time ETA | GHz-d/day Sieve Wait
May 26 04:34 | 0 0.1% | 4.590 1h13m | 1708.49 82485 n.a.%
May 26 04:35 | 8 0.2% | 4.517 1h12m | 1736.10 82485 n.a.%
May 26 04:35 | 11 0.3% | 4.489 1h11m | 1746.93 82485 n.a.%
May 26 04:35 | 12 0.4% | 4.426 1h10m | 1771.79 82485 n.a.%
May 26 04:35 | 15 0.5% | 4.499 1h11m | 1743.05 82485 n.a.%
May 26 04:35 | 23 0.6% | 4.420 1h10m | 1774.20 82485 n.a.%
May 26 04:35 | 27 0.7% | 4.335 1h08m | 1808.99 82485 n.a.%
May 26 04:35 | 32 0.8% | 2.717 43m07s | 2886.26 82485 n.a.%
May 26 04:35 | 35 0.9% | 3.977 1h03m | 1971.83 82485 n.a.%
May 26 04:35 | 36 1.0% | 4.392 1h09m | 1785.51 82485 n.a.%
2026-05-26 04:36:43 (26960): wrapper (7.24.26018): starting
2026-05-26 04:36:43 (26960): wrapper: running mfaktc-win-64.exe (-d 0)
2026-05-26 04:36:43 (26960): wrapper: created child process 16448
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=175641733 bit_min=76 bit_max=77 (87.13 GHz-days)
Starting trial factoring M175641733 from 2^76 to 2^77 (87.13 GHz-days)
k_min = 215090862617400
k_max = 430181725239037
Using GPU kernel "barrett87_mul32_gs"
Date Time | class Pct | time ETA | GHz-d/day Sieve Wait
May 26 04:36 | 0 0.1% | 4.782 1h16m | 1639.89 82485 n.a.%
x mod p out of range!! x = 1190681, p = 44761, pinv = 96229, r = 1145920
May 26 04:36 | 8 0.2% | 3.549 56m40s | 2209.63 82485 n.a.%
ERROR: cudaGetLastError() returned 700: an illegal memory access was encountered
2026-05-26 04:36:54 (26960): mfaktc-win-64.exe exited; CPU time 1.687500
2026-05-26 04:36:54 (26960): app exit status: 0x1
2026-05-26 04:36:54 (26960): called boinc_finish(195)
</stderr_txt>
]]>
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