[英]Beignet OpenCL PyGPU issues
我正在尝试将OpenCL用作Kubuntu 17.04上Theano的后端，但遇到了一些无法解决的问题。
由于我使用的是Intel Broadwell处理器（如果有帮助的话，可以使用i7-5557u），因此我下载了Beignet源代码（1.3.1）及其所有依赖项的副本，并make && make install 。 根据指示 ，这似乎行之有效，因为
./utest_run命令报告100％成功 clinfo提供了有关此处理器的OpenCL功能的大量信息（我认为是正确的）。 在安装Beignet之前，它没有显示任何支持。 接着，我下载阿纳康达（4.4）的副本，并加入Keras （2.0.6）， Theano （0.9.0），和pygpu经由（0.6.9） conda包管理器。 Keras和Theano似乎运行良好，因为我从fast.ai课程改编的python脚本在使用CPU时（显然非常缓慢）完成了应做的工作。 另外，从旧的Internet上获得的一个简单测试脚本说，CPU路径可以正常运行（ https://pastebin.com/wM9jaGMF供参考）。
为了使Theano使用OpenCL后端，我添加了具有以下内容的~/.theanorc文件：
[global] floatX = float32 device = opencl0:0
现在，当我运行上面的pastebin脚本时，它给出以下错误：
ERROR (theano.gpuarray): Could not initialize pygpu, support disabled Traceback (most recent call last): File "/home/sahab/anaconda2/lib/python2.7/site-packages/theano/gpuarray/__init__.py", line 164, in <module> use(config.device) File "/home/sahab/anaconda2/lib/python2.7/site-packages/theano/gpuarray/__init__.py", line 151, in use init_dev(device) File "/home/sahab/anaconda2/lib/python2.7/site-packages/theano/gpuarray/__init__.py", line 60, in init_dev sched=config.gpuarray.sched) File "pygpu/gpuarray.pyx", line 634, in pygpu.gpuarray.init File "pygpu/gpuarray.pyx", line 584, in pygpu.gpuarray.pygpu_init File "pygpu/gpuarray.pyx", line 1057, in pygpu.gpuarray.GpuContext.__cinit__ GpuArrayException: clGetPlatformIDs(0, NULL, &nump): Unknown error
一个更简单的测试
DEVICE="opencl0:0" python -c "import pygpu; pygpu.test()"
引发与上述相同的错误。
我认为问题出在Beignet，而不是pygpu，但我不知道如何找到根本问题，因为clinfo似乎还不错。 我已经做了相当多的研究，但是似乎并没有像人们所做的那样，因为实际上并没有任何文档/博客文章/向您提供帮助。 有什么想法吗？
（根据记录，我可以肯定的是，考虑到我所拥有的计算机，这不会给我太多的提速，但是基于一些阅读，它至少应该使其速度提高1.5到2倍，因此应该仍然值得我尝试追踪）
后代的clinfo输出：
Number of platforms 2
Platform Name Intel Gen OCL Driver
Platform Vendor Intel
Platform Version OpenCL 1.2 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
Platform Name Portable Computing Language
Platform Vendor The pocl project
Platform Version OpenCL 2.0 pocl 0.13, LLVM 3.8.1
Platform Profile FULL_PROFILE
Platform Extensions cl_khr_icd
Platform Extensions function suffix POCL
Platform Name Intel Gen OCL Driver
Number of devices 1
Device Name Intel(R) Iris Graphics 6100 BroadWell U-Processor GT3
Device Vendor Intel
Device Vendor ID 0x8086
Device Version OpenCL 1.2 beignet 1.3
Driver Version 1.3
Device OpenCL C Version OpenCL C 1.2 beignet 1.3
Device Type GPU
Device Profile FULL_PROFILE
Max compute units 48
Max clock frequency 1000MHz
Device Partition (core)
Max number of sub-devices 1
Supported partition types None, None, None
Max work item dimensions 3
Max work item sizes 512x512x512
Max work group size 512
Preferred work group size multiple 16
Preferred / native vector sizes
char 16 / 8
short 8 / 8
int 4 / 4
long 2 / 2
half 0 / 8 (cl_khr_fp16)
float 4 / 4
double 0 / 2 (n/a)
Half-precision Floating-point support (cl_khr_fp16)
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
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 (n/a)
Address bits 32, Little-Endian
Global memory size 4294967296 (4GiB)
Error Correction support No
Max memory allocation 2147483648 (2GiB)
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 8192
Global Memory cache line 64 bytes
Image support Yes
Max number of samplers per kernel 16
Max size for 1D images from buffer 65536 pixels
Max 1D or 2D image array size 2048 images
Base address alignment for 2D image buffers 4096 bytes
Pitch alignment for 2D image buffers 1 bytes
Max 2D image size 8192x8192 pixels
Max 3D image size 8192x8192x2048 pixels
Max number of read image args 128
Max number of write image args 8
Local memory type Local
Local memory size 65536 (64KiB)
Max constant buffer size 134217728 (128MiB)
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 80ns
Execution capabilities
Run OpenCL kernels Yes
Run native kernels Yes
SPIR versions 1.2
printf() buffer size 1048576 (1024KiB)
Built-in kernels __cl_copy_region_align4;__cl_copy_region_align16;__cl_cpy_region_unalign_same_offset;__cl_copy_region_unalign_dst_offset;__cl_copy_region_unalign_src_offset;__cl_copy_buffer_rect;__cl_copy_image_1d_to_1d;__cl_copy_image_2d_to_2d;__cl_copy_image_3d_to_2d;__cl_copy_image_2d_to_3d;__cl_copy_image_3d_to_3d;__cl_copy_image_2d_to_buffer;__cl_copy_image_3d_to_buffer;__cl_copy_buffer_to_image_2d;__cl_copy_buffer_to_image_3d;__cl_fill_region_unalign;__cl_fill_region_align2;__cl_fill_region_align4;__cl_fill_region_align8_2;__cl_fill_region_align8_4;__cl_fill_region_align8_8;__cl_fill_region_align8_16;__cl_fill_region_align128;__cl_fill_image_1d;__cl_fill_image_1d_array;__cl_fill_image_2d;__cl_fill_image_2d_array;__cl_fill_image_3d;
Device Available Yes
Compiler Available Yes
Linker Available Yes
Device 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 cl_khr_fp16
Platform Name Portable Computing Language
Number of devices 1
Device Name pthread-Intel(R) Core(TM) i7-5557U CPU @ 3.10GHz
Device Vendor GenuineIntel
Device Vendor ID 0x8086
Device Version OpenCL 2.0 pocl
Driver Version 0.13
Device OpenCL C Version OpenCL C 2.0
Device Type CPU, Default
Device Profile FULL_PROFILE
Max compute units 4
Max clock frequency 3400MHz
Device Partition (core)
Max number of sub-devices 4
Supported partition types equally, by counts
Max work item dimensions 3
Max work item sizes 4096x4096x4096
Max work group size 4096
Preferred work group size multiple 8
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 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 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
Address bits 64, Little-Endian
Global memory size 17862586368 (16.64GiB)
Error Correction support No
Max memory allocation 17862586368 (16.64GiB)
Unified memory for Host and Device Yes
Shared Virtual Memory (SVM) capabilities (core)
Coarse-grained buffer sharing Yes
Fine-grained buffer sharing Yes
Fine-grained system sharing No
Atomics Yes
Minimum alignment for any data type 128 bytes
Alignment of base address 1024 bits (128 bytes)
Preferred alignment for atomics
SVM 0 bytes
Global 0 bytes
Local 0 bytes
Max size for global variable 0
Preferred total size of global vars 0
Global Memory cache type Read/Write
Global Memory cache size 32768
Global Memory cache line 64 bytes
Image support Yes
Max number of samplers per kernel 16
Max size for 1D images from buffer 1116411648 pixels
Max 1D or 2D image array size 2048 images
Max 2D image size 32768x32768 pixels
Max 3D image size 2048x2048x2048 pixels
Max number of read image args 128
Max number of write image args 128
Max number of read/write image args <printDeviceInfo:106: get CL_DEVICE_MAX_READ_WRITE_IMAGE_ARGS : error -30>
Max number of pipe args 16
Max active pipe reservations 1
Max pipe packet size 1024
Local memory type Global
Local memory size 17862586368 (16.64GiB)
Max constant buffer size 17862586368 (16.64GiB)
Max number of constant args 8
Max size of kernel argument 1024
Queue properties (on host)
Out-of-order execution No
Profiling Yes
Queue properties (on device)
Out-of-order execution Yes
Profiling Yes
Preferred size 16384 (16KiB)
Max size 262144 (256KiB)
Max queues on device 1
Max events on device 1024
Prefer user sync for interop Yes
Profiling timer resolution 1ns
Execution capabilities
Run OpenCL kernels Yes
Run native kernels Yes
SPIR versions 1.2
printf() buffer size 1048576 (1024KiB)
Built-in kernels
Device Available Yes
Compiler Available Yes
Linker Available Yes
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_spir cl_khr_int64 cl_khr_fp64 cl_khr_int64_base_atomics cl_khr_int64_extended_atomics
NULL platform behavior
clGetPlatformInfo(NULL, CL_PLATFORM_NAME, ...) Intel Gen OCL Driver
clGetDeviceIDs(NULL, CL_DEVICE_TYPE_ALL, ...) Success [Intel]
clCreateContext(NULL, ...) [default] Success [Intel]
clCreateContext(NULL, ...) [other] Success [POCL]
clCreateContextFromType(NULL, CL_DEVICE_TYPE_CPU) No devices found in platform
clCreateContextFromType(NULL, CL_DEVICE_TYPE_GPU) Success (1)
Platform Name Intel Gen OCL Driver
Device Name Intel(R) Iris Graphics 6100 BroadWell U-Processor GT3
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 Intel Gen OCL Driver
Device Name Intel(R) Iris Graphics 6100 BroadWell U-Processor GT3
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
安装beignet以在Intel上使用OpenCL，但OpenCL程序仅在以root身份运行时才能运行
[英]Installed beignet to use OpenCL on Intel, but OpenCL programs only work when run as root
pygpu 问题：DLL 加载失败：找不到指定的程序
[英]pygpu problem : DLL load failed: The specified procedure could not be found
DLL加载失败：找不到pygpu / libgpuarray的指定模块
[英]DLL load failed: The specified module could not be found for pygpu/libgpuarray
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