Stderr output

<core_client_version>8.2.8</core_client_version>
<![CDATA[
<message>
The operating system cannot run (null).
 (0xc3) - exit code 195 (0xc3)</message>
<stderr_txt>
2026-03-19 08:51:42 (34304): wrapper (7.24.26018): starting
2026-03-19 08:51:43 (34304): wrapper: running mfakto.exe (-d 0)
2026-03-19 08:51:43 (34304): wrapper: created child process 21412
mfakto 0.16.0-beta.5-Win (64-bit build)


Runtime options
  INI file                  mfakto.ini
  Verbosity                 1
  SieveOnGPU                yes
  MoreClasses               yes
  GPUSievePrimes            81157
  GPUSieveProcessSize       24 Kib
  GPUSieveSize              96 Mib
  FlushInterval             0
  WorkFile                  worktodo.txt
  ResultsFile               results.txt
  JSONResultsFile           results.json.txt
  LogFile                   mfakto.log
  Checkpoints               enabled
  CheckpointDelay           60 s
  Stages                    disabled
  StopAfterFactor           bit level
  PrintMode                 compact
  Logging                   disabled
  V5UserID                  none
  ComputerID                none
  TimeStampInResults        yes
  LegacyResultsTxt          no
  VectorSize                2
  GPUType                   AUTO
  SmallExp                  no
  UseBinfile                mfakto_Kernels.elf

Compile-time options

Select device - Get device info:

OpenCL device info
  name                      Cedar (Advanced Micro Devices, Inc.)
  device (driver) version   OpenCL 1.2 AMD-APP (1800.11) (1800.11 (VM))
  maximum threads per block 128
  maximum threads per grid  2097152
  number of multiprocessors 2 (160 compute elements)
  clock rate                650 MHz

Automatic parameters
  threads per grid          0
  optimizing kernels for    VLIW5

Compiling kernels.
 
	BUILD OUTPUT
".\common.cl", line 155: warning: unrecognized #pragma
  #pragma "No double precision available"
          ^

".\gpusieve.cl", line 103: warning: integer conversion resulted in a change of
          sign
                                    1<<16, 1<<17, 1<<18, 1<<19, 1<<20, 1<<21, 1<<22, 1<<23, 1<<24, 1<<25, 1<<26, 1<<27, 1<<28, 1<<29, 1<<30, 1<<31,
                                                                                                                                             ^

".\gpusieve.cl", line 257: error: work group size exceeds the maximum default
          value for the selected device
  __kernel void __attribute__((reqd_work_group_size(256, 1, 1))) SegSieve (__global uchar *big_bit_array_dev, __global uchar *pinfo_dev, uint maxp)
                               ^

".\gpusieve.cl", line 1330: error: work group size exceeds the maximum default
          value for the selected device
  __kernel void __attribute__((reqd_work_group_size(256, 1, 1))) CalcModularInverses (uint exponent, __global int *calc_info)
                               ^

".\gpusieve.cl", line 1378: error: work group size exceeds the maximum default
          value for the selected device
  __kernel void __attribute__((reqd_work_group_size(256, 1, 1))) CalcBitToClear (uint exponent, ulong k_base, __global int *calc_info, __global uchar *pinfo_dev)
                               ^

".\barrett15.cl", line 3700: error: work group size exceeds the maximum
          default value for the selected device
  __kernel void __attribute__((reqd_work_group_size(256, 1, 1)))
                               ^

".\barrett15.cl", line 3836: error: work group size exceeds the maximum
          default value for the selected device
  __kernel void __attribute__((reqd_work_group_size(256, 1, 1)))
                               ^

".\barrett15.cl", line 3972: error: work group size exceeds the maximum
          default value for the selected device
  __kernel void __attribute__((reqd_work_group_size(256, 1, 1)))
                               ^

".\barrett15.cl", line 4108: error: work group size exceeds the maximum
          default value for the selected device
  __kernel void __attribute__((reqd_work_group_size(256, 1, 1)))
                               ^

".\barrett15.cl", line 4244: error: work group size exceeds the maximum
          default value for the selected device
  __kernel void __attribute__((reqd_work_group_size(256, 1, 1)))
                               ^

".\barrett15.cl", line 4383: error: work group size exceeds the maximum
          default value for the selected device
  __kernel void __attribute__((reqd_work_group_size(256, 1, 1)))
                               ^

".\barrett15.cl", line 4522: error: work group size exceeds the maximum
          default value for the selected device
  __kernel void __attribute__((reqd_work_group_size(256, 1, 1)))
                               ^

".\barrett15.cl", line 4662: error: work group size exceeds the maximum
          default value for the selected device
  __kernel void __attribute__((reqd_work_group_size(256, 1, 1)))
                               ^

"C:\Users\VALUED~1\AppData\Local\Temp\OCL5086.tmp.cl", line 115: warning: 
          variable "carry1" was set but never used
    uint_v carry0, carry1;
                   ^

11 errors detected in the compilation of "C:\Users\VALUED~1\AppData\Local\Temp\OCL5086.tmp.cl".
Frontend phase failed compilation.

 	END OF BUILD OUTPUT
Error -11 (Build program failure): clBuildProgram
ERROR: load_kernels(0) failed
2026-03-19 08:51:44 (34304): mfakto.exe exited; CPU time 0.000000
2026-03-19 08:51:44 (34304): app exit status: 0x2
2026-03-19 08:51:44 (34304): called boinc_finish(195)

</stderr_txt>
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