One of my GPUs that has been rock stable for weeks is now returning a very high percentag of Invalids

Its a HD 7950 not over clocked using an App-info set to count .125 running 8 threads on a sandy bridge 2700K, using Boinc 7.0.28

NO errors, just invalids. I looked at several and many of the returns, a few ask for about half the credit as the two wingman some ask for more some are in the middle.

Temps are good, no crashes, and GPU works well doing other tasks

Should I have it run a benchmark?

Here are some logs

This one asked for more credit than the wingmen
Result Name: X0900084091133200702211340_ 0--



<core_client_version>7.0.28</core_client_version>
<![CDATA[
<stderr_txt>
Commandline: projects/www.worldcommunitygrid.org/wcg_hcc1_img_7.05_windows_intelx86__ati_hcc1 --zipfile X0900084091133200702211340.zip --imagelist images.txt --device 0
<app_init_data>
<major_version>7</major_version>
<minor_version>0</minor_version>
<release>28</release>
<app_version>705</app_version>
<app_name>hcc1</app_name>
<project_preferences>


<color_scheme>Tahiti Sunset</color_scheme>
<max_frames_sec>1</max_frames_sec>
<max_gfx_cpu_pct>1.0</max_gfx_cpu_pct>
</project_preferences>

<project_dir>C:\ProgramData\BOINC/projects/www.worldcommunitygrid.org</project_dir>
<boinc_dir>C:\ProgramData\BOINC</boinc_dir>
<wu_name>X0900084091133200702211340</wu_name>
<result_name>X0900084091133200702211340_0</result_name>
<comm_obj_name>boinc_8</comm_obj_name>
<slot>8</slot>
<wu_cpu_time>0.000000</wu_cpu_time>
<starting_elapsed_time>0.000000</starting_elapsed_time>
<using_sandbox>0</using_sandbox>
<user_total_credit>20180163.094399</user_total_credit>
<user_expavg_credit>218881.081128</user_expavg_credit>
<host_total_credit>2180739.668392</host_total_credit>
<host_expavg_credit>72009.745031</host_expavg_credit>
<resource_share_fraction>1.000000</resource_share_fraction>
<checkpoint_period>60.000000</checkpoint_period>
<fraction_done_start>0.000000</fraction_done_start>
<fraction_done_end>1.000000</fraction_done_end>
<gpu_type>ATI</gpu_type>
<gpu_device_num>0</gpu_device_num>
<gpu_opencl_dev_index>0</gpu_opencl_dev_index>
<ncpus>1.000000</ncpus>
<rsc_fpops_est>25678110692359.000000</rsc_fpops_est>
<rsc_fpops_bound>513562213847180.000000</rsc_fpops_bound>
<rsc_memory_bound>78643200.000000</rsc_memory_bound>
<rsc_disk_bound>50000000.000000</rsc_disk_bound>
<computation_deadline>1355414841.000000</computation_deadline>
<vbox_window>0</vbox_window>
</app_init_data>
INFO: gpu_type set in init_data.xml to ATI
INFO: gpu_device_num set in init_data.xml to 0
Boinc requested ATI gpu device number0
Unzipping input images ../../projects/www.worldcommunitygrid.org/X0900084091133200702211340_X0900084091133200702211340.zip
Processing jobdescription
Number of Images defined in image list is 2
Found compute platform Intel(R) Corporation
Found compute platform Advanced Micro Devices, Inc.
Selecting this platform
CL_DEVICE_NAME: Tahiti
CL_DEVICE_VENDOR: Advanced Micro Devices, Inc.
CL_DEVICE_VERSION: CAL 1.4.1741 (VM)
CL_DEVICE_MAX_COMPUTE_UNITS: 
CL_DEVICE_MAX_WORK_ITEM_DIMENSIONS: 3
CL_DEVICE_MAX_WORK_ITEM_SIZES: 256 / 256 / 256
CL_DEVICE_MAX_WORK_GROUP_SIZE: 256
CL_DEVICE_MAX_CLOCK_FREQUENCY: 925 MHz
CL_DEVICE_ADDRESS_BITS: 32
CL_DEVICE_MAX_MEM_ALLOC_SIZE: 512 MByte
CL_DEVICE_GLOBAL_MEM_SIZE: 2048 MByte
CL_DEVICE_ERROR_CORRECTION_SUPPORT: no
CL_DEVICE_LOCAL_MEM_TYPE: local
CL_DEVICE_LOCAL_MEM_SIZE: 32 KByte
CL_DEVICE_MAX_CONSTANT_BUFFER_SIZE: 64 KByte
CL_DEVICE_QUEUE_PROPERTIES: CL_QUEUE_PROFILING_ENABLE
CL_DEVICE_EXTENSIONS:
cl_khr_fp64
cl_amd_fp64
cl_khr_global_int32_base_atomics
cl_khr_global_int32_extended_atomics
cl_khr_local_int32_base_atomics
cl_khr_local_int32_extended_atomics
cl_khr_3d_image_writes
cl_khr_byte_addressable_store
cl_khr_gl_sharing
cl_ext_atomic_counters_32
cl_amd_device_attribute_query
cl_amd_vec3
cl_amd_printf
cl_amd_media_ops
cl_amd_popcnt
cl_khr_d3d10_sharing
Estimated kernel execution time = 0.20629 [sec]
Starting analysis of X0900084091133200702211340.jp2...
Extracting GLCM features...
Total kernel time: 26.721956 (1026 kernel executions)
Total memory transfer time: 40.475330
Average kernel time: 0.026045
Min kernel time: 0.024463 (dx=5 dy=25 sample_dist=24 )
Max kernel time: 0.027139 dx=7 dy=2 sample_dist=6
INFO: GPU calculations complete.
Total time for X0900084091133200702211340.jp2: 244 seconds
Finished Image #0, pctComplete = 0.500000
Starting analysis of X0900084091302200702211336.jp2...
Extracting GLCM features...
Total kernel time: 27.972946 (1026 kernel executions)
Total memory transfer time: 88.694519
Average kernel time: 0.027264
Min kernel time: 0.025793 (dx=5 dy=25 sample_dist=24 )
Max kernel time: 0.028791 dx=1 dy=1 sample_dist=0
INFO: GPU calculations complete.
Total time for X0900084091302200702211336.jp2: 267 seconds
Finished Image #1, pctComplete = 1.000000
CPU time used = 237.121520
14:20:06 (611468): called boinc_finish

</stderr_txt>
]]>

------------------------
This one was in the middle of the two

Result Name: X0930084571292200703161715_ 0--



<core_client_version>7.0.28</core_client_version>
<![CDATA[
<stderr_txt>
Commandline: projects/www.worldcommunitygrid.org/wcg_hcc1_img_7.05_windows_intelx86__ati_hcc1 --zipfile X0930084571292200703161715.zip --imagelist images.txt --device 0
<app_init_data>
<major_version>7</major_version>
<minor_version>0</minor_version>
<release>28</release>
<app_version>705</app_version>
<app_name>hcc1</app_name>
<project_preferences>


<color_scheme>Tahiti Sunset</color_scheme>
<max_frames_sec>1</max_frames_sec>
<max_gfx_cpu_pct>1.0</max_gfx_cpu_pct>
</project_preferences>

<project_dir>C:\ProgramData\BOINC/projects/www.worldcommunitygrid.org</project_dir>
<boinc_dir>C:\ProgramData\BOINC</boinc_dir>
<wu_name>X0930084571292200703161715</wu_name>
<result_name>X0930084571292200703161715_0</result_name>
<comm_obj_name>boinc_2</comm_obj_name>
<slot>2</slot>
<wu_cpu_time>0.000000</wu_cpu_time>
<starting_elapsed_time>0.000000</starting_elapsed_time>
<using_sandbox>0</using_sandbox>
<user_total_credit>20171742.394666</user_total_credit>
<user_expavg_credit>218864.464076</user_expavg_credit>
<host_total_credit>2177550.720738</host_total_credit>
<host_expavg_credit>71954.892683</host_expavg_credit>
<resource_share_fraction>1.000000</resource_share_fraction>
<checkpoint_period>60.000000</checkpoint_period>
<fraction_done_start>0.000000</fraction_done_start>
<fraction_done_end>1.000000</fraction_done_end>
<gpu_type>ATI</gpu_type>
<gpu_device_num>0</gpu_device_num>
<gpu_opencl_dev_index>0</gpu_opencl_dev_index>
<ncpus>1.000000</ncpus>
<rsc_fpops_est>25678110692359.000000</rsc_fpops_est>
<rsc_fpops_bound>513562213847180.000000</rsc_fpops_bound>
<rsc_memory_bound>78643200.000000</rsc_memory_bound>
<rsc_disk_bound>50000000.000000</rsc_disk_bound>
<computation_deadline>1355411657.000000</computation_deadline>
<vbox_window>0</vbox_window>
</app_init_data>
INFO: gpu_type set in init_data.xml to ATI
INFO: gpu_device_num set in init_data.xml to 0
Boinc requested ATI gpu device number0
Unzipping input images ../../projects/www.worldcommunitygrid.org/X0930084571292200703161715_X0930084571292200703161715.zip
Processing jobdescription
Number of Images defined in image list is 2
Found compute platform Intel(R) Corporation
Found compute platform Advanced Micro Devices, Inc.
Selecting this platform
CL_DEVICE_NAME: Tahiti
CL_DEVICE_VENDOR: Advanced Micro Devices, Inc.
CL_DEVICE_VERSION: CAL 1.4.1741 (VM)
CL_DEVICE_MAX_COMPUTE_UNITS: 
CL_DEVICE_MAX_WORK_ITEM_DIMENSIONS: 3
CL_DEVICE_MAX_WORK_ITEM_SIZES: 256 / 256 / 256
CL_DEVICE_MAX_WORK_GROUP_SIZE: 256
CL_DEVICE_MAX_CLOCK_FREQUENCY: 925 MHz
CL_DEVICE_ADDRESS_BITS: 32
CL_DEVICE_MAX_MEM_ALLOC_SIZE: 512 MByte
CL_DEVICE_GLOBAL_MEM_SIZE: 2048 MByte
CL_DEVICE_ERROR_CORRECTION_SUPPORT: no
CL_DEVICE_LOCAL_MEM_TYPE: local
CL_DEVICE_LOCAL_MEM_SIZE: 32 KByte
CL_DEVICE_MAX_CONSTANT_BUFFER_SIZE: 64 KByte
CL_DEVICE_QUEUE_PROPERTIES: CL_QUEUE_PROFILING_ENABLE
CL_DEVICE_EXTENSIONS:
cl_khr_fp64
cl_amd_fp64
cl_khr_global_int32_base_atomics
cl_khr_global_int32_extended_atomics
cl_khr_local_int32_base_atomics
cl_khr_local_int32_extended_atomics
cl_khr_3d_image_writes
cl_khr_byte_addressable_store
cl_khr_gl_sharing
cl_ext_atomic_counters_32
cl_amd_device_attribute_query
cl_amd_vec3
cl_amd_printf
cl_amd_media_ops
cl_amd_popcnt
cl_khr_d3d10_sharing
Estimated kernel execution time = 0.20789 [sec]
Starting analysis of X0930084571292200703161715.jp2...
Extracting GLCM features...
Total kernel time: 33.490486 (1026 kernel executions)
Total memory transfer time: 41.889751
Average kernel time: 0.032642
Min kernel time: 0.030474 (dx=11 dy=23 sample_dist=24 )
Max kernel time: 0.033878 dx=1 dy=0 sample_dist=0
INFO: GPU calculations complete.
Total time for X0930084571292200703161715.jp2: 254 seconds
Finished Image #0, pctComplete = 0.500000
Starting analysis of X0930084570438200703161725.jp2...
Extracting GLCM features...
Total kernel time: 31.213783 (1026 kernel executions)
Total memory transfer time: 86.896523
Average kernel time: 0.030423
Min kernel time: 0.028608 (dx=5 dy=25 sample_dist=24 )
Max kernel time: 0.032054 dx=1 dy=1 sample_dist=0
INFO: GPU calculations complete.
Total time for X0930084570438200703161725.jp2: 256 seconds
Finished Image #1, pctComplete = 1.000000
CPU time used = 231.489884
13:27:21 (609932): called boinc_finish

</stderr_txt>
]]>