AMD GPU: Computation Error
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AMD GPU: Computation Error
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Send message Joined: 11 Mar 18 Posts: 2 Credit: 7,683,602 RAC: 0  
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My GPU WUs always end like this: https://milkyway.cs.rpi.edu/milkyway/result.php?resultid=2287474945 I'm using Fedora 27 without proprietary fglrx driver. |
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Send message Joined: 2 Oct 16 Posts: 167 Credit: 1,005,839,012 RAC: 48,545   
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My GPU WUs always end like this: https://milkyway.cs.rpi.edu/milkyway/result.php?resultid=2287474945 That does not support double precision on the APU: http://www.gpuzoo.com/GPU-AMD/Radeon_HD_7540D_IGP.html |
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Send message Joined: 11 Mar 18 Posts: 2 Credit: 7,683,602 RAC: 0
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Should'nt OpenCL do that in software if necessary? clinfo says $ clinfo
DRM_IOCTL_I915_GEM_APERTURE failed: No such file or directory
Assuming 131072kB available aperture size.
May lead to reduced performance or incorrect rendering.
get chip id failed: -1 [22]
param: 4, val: 0
DRM_IOCTL_I915_GEM_APERTURE failed: No such file or directory
Assuming 131072kB available aperture size.
May lead to reduced performance or incorrect rendering.
get chip id failed: -1 [22]
param: 4, val: 0
cl_get_gt_device(): error, unknown device: 0
DRM_IOCTL_I915_GEM_APERTURE failed: No such file or directory
Assuming 131072kB available aperture size.
May lead to reduced performance or incorrect rendering.
get chip id failed: -1 [22]
param: 4, val: 0
DRM_IOCTL_I915_GEM_APERTURE failed: No such file or directory
Assuming 131072kB available aperture size.
May lead to reduced performance or incorrect rendering.
get chip id failed: -1 [22]
param: 4, val: 0
cl_get_gt_device(): error, unknown device: 0
Number of platforms 3
Platform Name Clover
Platform Vendor Mesa
Platform Version OpenCL 1.1 Mesa 17.3.6
Platform Profile FULL_PROFILE
Platform Extensions cl_khr_icd
Platform Extensions function suffix MESA
Platform Name Portable Computing Language
Platform Vendor The pocl project
Platform Version OpenCL 1.2 pocl 0.15-pre, LLVM 5.0.0
Platform Profile FULL_PROFILE
Platform Extensions cl_khr_icd
Platform Extensions function suffix POCL
Platform Name Intel Gen OCL Driver
Platform Vendor Intel
Platform Version OpenCL 2.0 beignet 1.3
Platform Profile FULL_PROFILE
Platform Extensions 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_byte_addressable_store cl_khr_3d_image_writes cl_khr_image2d_from_buffer cl_khr_depth_images cl_khr_spir cl_khr_icd cl_intel_accelerator cl_intel_subgroups cl_intel_subgroups_short cl_khr_gl_sharing
Platform Extensions function suffix Intel
DRM_IOCTL_I915_GEM_APERTURE failed: No such file or directory
Assuming 131072kB available aperture size.
May lead to reduced performance or incorrect rendering.
get chip id failed: -1 [22]
param: 4, val: 0
cl_get_gt_device(): error, unknown device: 0
Platform Name Clover
Number of devices 1
Device Name AMD ARUBA (DRM 2.50.0 / 4.15.9-300.fc27.x86_64, LLVM 5.0.1)
Device Vendor AMD
Device Vendor ID 0x1002
Device Version OpenCL 1.1 Mesa 17.3.6
Driver Version 17.3.6
Device OpenCL C Version OpenCL C 1.1
Device Type GPU
Device Available Yes
Device Profile FULL_PROFILE
Max compute units 3
Max clock frequency 0MHz
Max work item dimensions 3
Max work item sizes 256x256x256
Max work group size 256
Compiler Available Yes
Preferred work group size multiple 64
Preferred / native vector sizes
char 16 / 16
short 8 / 8
int 4 / 4
long 2 / 2
half 0 / 0 (n/a)
float 4 / 4
double 2 / 2 (cl_khr_fp64)
Half-precision Floating-point support (n/a)
Single-precision Floating-point support (core)
Denormals No
Infinity and NANs Yes
Round to nearest Yes
Round to zero No
Round to infinity No
IEEE754-2008 fused multiply-add No
Support is emulated in software No
Correctly-rounded divide and sqrt operations No
Double-precision Floating-point support (cl_khr_fp64)
Denormals Yes
Infinity and NANs Yes
Round to nearest Yes
Round to zero Yes
Round to infinity Yes
IEEE754-2008 fused multiply-add Yes
Support is emulated in software No
Address bits 32, Little-Endian
Global memory size 1071431680 (1022MiB)
Error Correction support No
Max memory allocation 750002176 (715.3MiB)
Unified memory for Host and Device No
Minimum alignment for any data type 128 bytes
Alignment of base address 32768 bits (4096 bytes)
Global Memory cache type None
Image support No
Local memory type Local
Local memory size 32768 (32KiB)
Max constant buffer size 750002176 (715.3MiB)
Max number of constant args 13
Max size of kernel argument 1024
Queue properties
Out-of-order execution No
Profiling Yes
Profiling timer resolution 0ns
Execution capabilities
Run OpenCL kernels Yes
Run native kernels No
Device Extensions cl_khr_byte_addressable_store 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_fp64
Platform Name Portable Computing Language
Number of devices 1
Device Name pthread-AMD A6-5400K APU with Radeon(tm) HD Graphics
Device Vendor AuthenticAMD
Device Vendor ID 0x1022
Device Version OpenCL 1.2 pocl HSTR: pthread-x86_64-unknown-linux-gnu-haswell
Driver Version 0.15-pre
Device OpenCL C Version OpenCL C 1.2 pocl
Device Type CPU
Device Available Yes
Device Profile FULL_PROFILE
Max compute units 2
Max clock frequency 3600MHz
Device Partition (core)
Max number of sub-devices 2
Supported partition types equally, by counts
Max work item dimensions 3
Max work item sizes 4096x4096x4096
Max work group size 4096
Compiler Available Yes
Linker Available Yes
1 error generated.
=== CL_PROGRAM_BUILD_LOG ===
error: <built-in>:2:10: '/usr/lib64/clang/5.0.0/include/opencl-c.h' file not found
error: <built-in>:2:10: '/usr/lib64/clang/5.0.0/include/opencl-c.h' file not found
error: <built-in>:2:10: '/usr/lib64/clang/5.0.0/include/opencl-c.h' file not found
error: <built-in>:2:10: '/usr/lib64/clang/5.0.0/include/opencl-c.h' file not found
error: <built-in>:2:10: '/usr/lib64/clang/5.0.0/include/opencl-c.h' file not found
error: <built-in>:2:10: '/usr/lib64/clang/5.0.0/include/opencl-c.h' file not found
Preferred work group size multiple <getWGsizes:523: build program : error -11>
Preferred / native vector sizes
char 16 / 16
short 8 / 8
int 4 / 4
long 2 / 2
half 8 / 8 (n/a)
float 4 / 4
double 2 / 2 (cl_khr_fp64)
Half-precision Floating-point support (n/a)
Single-precision Floating-point support (core)
Denormals Yes
Infinity and NANs Yes
Round to nearest Yes
Round to zero Yes
Round to infinity Yes
IEEE754-2008 fused multiply-add Yes
Support is emulated in software No
Correctly-rounded divide and sqrt operations No
Double-precision Floating-point support (cl_khr_fp64)
Denormals Yes
Infinity and NANs Yes
Round to nearest Yes
Round to zero Yes
Round to infinity Yes
IEEE754-2008 fused multiply-add Yes
Support is emulated in software No
Address bits 64, Little-Endian
Global memory size 2727760896 (2.54GiB)
Error Correction support No
Max memory allocation 1073741824 (1024MiB)
Unified memory for Host and Device Yes
Minimum alignment for any data type 128 bytes
Alignment of base address 1024 bits (128 bytes)
Global Memory cache type Read/Write
Global Memory cache size 16384 (16KiB)
Global Memory cache line size 64 bytes
Image support Yes
Max number of samplers per kernel 16
Max size for 1D images from buffer 67108864 pixels
Max 1D or 2D image array size 2048 images
Max 2D image size 8192x8192 pixels
Max 3D image size 2048x2048x2048 pixels
Max number of read image args 128
Max number of write image args 128
Local memory type Global
Local memory size 16777216 (16MiB)
Max constant buffer size 16777216 (16MiB)
Max number of constant args 8
Max size of kernel argument 1024
Queue properties
Out-of-order execution No
Profiling Yes
Prefer user sync for interop Yes
Profiling timer resolution 1ns
Execution capabilities
Run OpenCL kernels Yes
Run native kernels Yes
printf() buffer size 1048576 (1024KiB)
Built-in kernels
Device Extensions cl_khr_byte_addressable_store 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_fp64 cl_khr_int64_base_atomics cl_khr_int64_extended_atomics
Platform Name Intel Gen OCL Driver
Number of devices 0
NULL platform behavior
clGetPlatformInfo(NULL, CL_PLATFORM_NAME, ...) Clover
clGetDeviceIDs(NULL, CL_DEVICE_TYPE_ALL, ...) Success [MESA]
clCreateContext(NULL, ...) [default] Success [MESA]
clCreateContext(NULL, ...) [other] Success [POCL]
clCreateContextFromType(NULL, CL_DEVICE_TYPE_DEFAULT) Success (1)
Platform Name Clover
Device Name AMD ARUBA (DRM 2.50.0 / 4.15.9-300.fc27.x86_64, LLVM 5.0.1)
clCreateContextFromType(NULL, CL_DEVICE_TYPE_CPU) No devices found in platform
clCreateContextFromType(NULL, CL_DEVICE_TYPE_GPU) Success (1)
Platform Name Clover
Device Name AMD ARUBA (DRM 2.50.0 / 4.15.9-300.fc27.x86_64, LLVM 5.0.1)
clCreateContextFromType(NULL, CL_DEVICE_TYPE_ACCELERATOR) No devices found in platform
clCreateContextFromType(NULL, CL_DEVICE_TYPE_CUSTOM) No devices found in platform
clCreateContextFromType(NULL, CL_DEVICE_TYPE_ALL) Success (1)
Platform Name Clover
Device Name AMD ARUBA (DRM 2.50.0 / 4.15.9-300.fc27.x86_64, LLVM 5.0.1)
ICD loader properties
ICD loader Name OpenCL ICD Loader
ICD loader Vendor OCL Icd free software
ICD loader Version 2.2.11
ICD loader Profile OpenCL 2.1 |
 mikey Send message Joined: 8 May 09 Posts: 3319 Credit: 520,329,123 RAC: 21,330    
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Should'nt OpenCL do that in software if necessary? No double precision is something your gpu either comes with from the factory or it never has it. |
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Send message Joined: 9 Feb 11 Posts: 11 Credit: 57,516,678 RAC: 0  
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Hello I have an Amd Radeon 380X graphic card and I have lot's of computation errors almost 50% Once again It seams that this projects has unsolved computation issues on amd/ati graphic cards. The team of this...so called "project" is probably not up to the task for fixing their own issues with graphic card computation. It is happenning very often, I mean very very often! So it's a shit project for me ! I won't waste computation time and electricity on Milkyway anymore despite my respectable score and history. If, like me you have lot's of computation errors with this...?project? Crunch on Einstein at home wich is issue and error free ! Sincerly Elvis |
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Send message Joined: 10 Dec 17 Posts: 47 Credit: 695,662,962 RAC: 0 
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Hello Elvis, that's too bad you are having computation errors on your cards. What have you tried to fix that? Not sure insulting the devs is really going to do much other than make you look foolish. "It is happenning very often, I mean very very often!" Hrmmm, couldn't be your particular hardware/software eh? I currently have 3 invalid tasks across 6 cards and hundreds of tasks completed. What does that show? That the devs are responsible for terrible coding, causing all your troubles? Or maybe, just maybe, you need to take a swing at tweaking your particular set of OS/drivers/boinc config etc? I'm happy to help you troubleshoot. Personally I found lowering my CPU setting and leaving some room for OS tasks helped a lot. What particular cards/os/drivers etc are you running? Latest version of boinc app updated? Any tweaks to the boinc .xml files? Running multiple WU per card? |
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