Task 58961241
| Name | TF_76-77_180-198M_wu_43818_1 |
| Workunit | 52822305 |
| Created | 31 Aug 2026, 20:32:06 UTC |
| Sent | 31 Aug 2026, 20:46:02 UTC |
| Report deadline | 6 Sep 2026, 20:46:02 UTC |
| Received | 2 Sep 2026, 5:08:10 UTC |
| Server state | Over |
| Outcome | Computation error |
| Client state | Compute error |
| Exit status | 195 (0xc3) EXIT_CHILD_FAILED |
| Computer ID | 246842 |
| Run time | 3 min 21 sec |
| CPU time | 2 sec |
| Validate state | Invalid |
| Credit | 0.00 |
| Device peak FLOPS | 2,215.22 GFLOPS |
| Application version | TF v0.49 (cuda128) |
| Peak working set size | 126.62 MB |
| Peak swap size | 273.23 MB |
| Peak disk usage | 4.95 MB |
Stderr output
<core_client_version>8.2.4</core_client_version>
<![CDATA[
<message>
The operating system cannot run (null).
(0xc3) - exit code 195 (0xc3)</message>
<stderr_txt>
2026-09-02 06:24:13 (6396): wrapper (7.24.26018): starting
2026-09-02 06:24:13 (6396): wrapper: running mfaktc-win-64.exe (-d 0)
2026-09-02 06:24:13 (6396): wrapper: created child process 7448
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 12.9
CUDA device info
name NVIDIA GeForce GTX 1660 SUPER
compute capability 7.5
max threads per block 1024
max shared memory per MP 65536 bytes
number of multiprocessors 22
clock rate (CUDA cores) 1785 MHz
memory clock rate: 7001 MHz
memory bus width: 192 bits
Automatic parameters
threads per grid 720896
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=198189127 bit_min=76 bit_max=77 (77.22 GHz-days)
Starting trial factoring M198189127 from 2^76 to 2^77 (77.22 GHz-days)
k_min = 190620607873080
k_max = 381241215750016
Using GPU kernel "barrett87_mul32_gs"
Date Time | class Pct | time ETA | GHz-d/day Sieve Wait
Sep 02 06:24 | 0 0.1% | 4.220 1h07m | 1646.87 82485 n.a.%
Sep 02 06:24 | 5 0.2% | 4.194 1h06m | 1657.08 82485 n.a.%
Sep 02 06:24 | 9 0.3% | 4.227 1h07m | 1644.15 82485 n.a.%
Sep 02 06:24 | 12 0.4% | 4.225 1h07m | 1644.92 82485 n.a.%
Sep 02 06:24 | 17 0.5% | 4.227 1h07m | 1644.15 82485 n.a.%
Sep 02 06:24 | 20 0.6% | 4.227 1h07m | 1644.15 82485 n.a.%
Sep 02 06:24 | 24 0.7% | 4.224 1h07m | 1645.31 82485 n.a.%
Sep 02 06:24 | 32 0.8% | 4.226 1h07m | 1644.53 82485 n.a.%
Sep 02 06:24 | 33 0.9% | 4.226 1h06m | 1644.53 82485 n.a.%
Sep 02 06:24 | 44 1.0% | 4.227 1h06m | 1644.15 82485 n.a.%
Sep 02 06:25 | 45 1.1% | 4.228 1h06m | 1643.76 82485 n.a.%
Sep 02 06:25 | 53 1.2% | 4.226 1h06m | 1644.53 82485 n.a.%
Sep 02 06:25 | 60 1.4% | 4.226 1h06m | 1644.53 82485 n.a.%
Sep 02 06:25 | 65 1.5% | 4.224 1h06m | 1645.31 82485 n.a.%
Sep 02 06:25 | 68 1.6% | 4.229 1h06m | 1643.37 82485 n.a.%
Sep 02 06:25 | 69 1.7% | 4.225 1h06m | 1644.92 82485 n.a.%
Sep 02 06:25 | 72 1.8% | 4.226 1h06m | 1644.53 82485 n.a.%
Sep 02 06:25 | 77 1.9% | 4.226 1h06m | 1644.53 82485 n.a.%
Sep 02 06:25 | 80 2.0% | 4.225 1h06m | 1644.92 82485 n.a.%
Sep 02 06:25 | 84 2.1% | 4.226 1h06m | 1644.53 82485 n.a.%
Sep 02 06:25 | 89 2.2% | 4.226 1h06m | 1644.53 82485 n.a.%
Sep 02 06:25 | 93 2.3% | 4.227 1h06m | 1644.15 82485 n.a.%
Sep 02 06:25 | 104 2.4% | 4.224 1h05m | 1645.31 82485 n.a.%
Sep 02 06:25 | 105 2.5% | 4.227 1h05m | 1644.15 82485 n.a.%
Sep 02 06:26 | 108 2.6% | 4.228 1h05m | 1643.76 82485 n.a.%
Sep 02 06:26 | 117 2.7% | 4.222 1h05m | 1646.09 82485 n.a.%
Sep 02 06:26 | 128 2.8% | 4.228 1h05m | 1643.76 82485 n.a.%
Sep 02 06:26 | 129 2.9% | 4.227 1h05m | 1644.15 82485 n.a.%
Sep 02 06:26 | 132 3.0% | 4.227 1h05m | 1644.15 82485 n.a.%
Sep 02 06:26 | 137 3.1% | 4.226 1h05m | 1644.53 82485 n.a.%
Sep 02 06:26 | 140 3.2% | 4.226 1h05m | 1644.53 82485 n.a.%
Sep 02 06:26 | 144 3.3% | 4.226 1h05m | 1644.53 82485 n.a.%
Sep 02 06:26 | 149 3.4% | 4.224 1h05m | 1645.31 82485 n.a.%
Sep 02 06:26 | 152 3.5% | 4.228 1h05m | 1643.76 82485 n.a.%
Sep 02 06:26 | 153 3.6% | 4.225 1h05m | 1644.92 82485 n.a.%
Sep 02 06:26 | 164 3.8% | 4.227 1h05m | 1644.15 82485 n.a.%
Sep 02 06:26 | 165 3.9% | 4.227 1h05m | 1644.15 82485 n.a.%
Sep 02 06:26 | 168 4.0% | 4.225 1h04m | 1644.92 82485 n.a.%
Sep 02 06:27 | 173 4.1% | 4.226 1h04m | 1644.53 82485 n.a.%
Sep 02 06:27 | 177 4.2% | 4.225 1h04m | 1644.92 82485 n.a.%
Sep 02 06:27 | 185 4.3% | 4.228 1h04m | 1643.76 82485 n.a.%
Sep 02 06:27 | 188 4.4% | 4.226 1h04m | 1644.53 82485 n.a.%
Sep 02 06:27 | 189 4.5% | 4.227 1h04m | 1644.15 82485 n.a.%
Sep 02 06:27 | 192 4.6% | 4.226 1h04m | 1644.53 82485 n.a.%
Sep 02 06:27 | 200 4.7% | 4.224 1h04m | 1645.31 82485 n.a.%
Sep 02 06:27 | 209 4.8% | 4.227 1h04m | 1644.15 82485 n.a.%
x mod p out of range!! x = 171912, p = 4723, pinv = 909758, r = 167189
Sep 02 06:27 | 212 4.9% | 1.989 30m16s | 3494.12 82485 n.a.%
ERROR: cudaGetLastError() returned 700: an illegal memory access was encountered
2026-09-02 06:27:32 (6396): mfaktc-win-64.exe exited; CPU time 2.171875
2026-09-02 06:27:32 (6396): app exit status: 0x1
2026-09-02 06:27:32 (6396): called boinc_finish(195)
</stderr_txt>
]]>
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