[Bug 240761] lang/clover: Segmentation fault in OpenCL programs
bugzilla-noreply at freebsd.org
bugzilla-noreply at freebsd.org
Mon Sep 23 08:23:33 UTC 2019
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=240761
--- Comment #2 from shamaz.mazum at gmail.com ---
> could you detail what programs crashes? Are they programs from ports/packages?
I mean ALL programs using clover ocl provider, including devel/clinfo. One
important thing, I forgot to mention is that you must have a suitable GPU (AMD
Radeon HD or RX series will do) and drm-kmod port installed or old radeonkms
module loaded (latter works only for old HD cards).
Try to launch clinfo and you will see something like this:
Number of platforms 1
Platform Name Clover
Platform Vendor Mesa
Platform Version OpenCL 1.1 Mesa 18.3.2
Platform Profile FULL_PROFILE
Platform Extensions cl_khr_icd
Platform Extensions function suffix MESA
Platform Name Clover
Number of devices 1
Device Name Radeon RX 580 Series
(POLARIS10, DRM 3.23.0, 12.0-RELEASE-p10, LLVM 8.0.1)
Device Vendor AMD
Device Vendor ID 0x1002
Device Version OpenCL 1.1 Mesa 18.3.2
Driver Version 18.3.2
Device OpenCL C Version OpenCL C 1.1
Device Type GPU
Device Profile FULL_PROFILE
Max compute units 36
Max clock frequency 1411MHz
Max work item dimensions 3
Max work item sizes 256x256x256
Max work group size 256
Preferred work group size multiple 64
Preferred / native vector sizes
char 16 / 16
short 8 / 8
int 4 / 4
long 2 / 2
half 8 / 8
(cl_khr_fp16)
float 4 / 4
double 2 / 2
(cl_khr_fp64)
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 (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
Correctly-rounded divide and sqrt operations No
Address bits 64, Little-Endian
Global memory size 4294967296 (4GiB)
Error Correction support No
Max memory allocation 3435973836 (3.2GiB)
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 2147483647 (2GiB)
Max number of constant args 16
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 Available Yes
Compiler 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_int64_base_atomics cl_khr_int64_extended_atomics cl_khr_fp64 cl_khr_fp16
NULL platform behavior
clGetPlatformInfo(NULL, CL_PLATFORM_NAME, ...) Clover
clGetDeviceIDs(NULL, CL_DEVICE_TYPE_ALL, ...) Success [MESA]
clCreateContext(NULL, ...) [default] Success [MESA]
clCreateContextFromType(NULL, CL_DEVICE_TYPE_CPU) No devices found in
platform
clCreateContextFromType(NULL, CL_DEVICE_TYPE_GPU) Success (1)
Platform Name Clover
Device Name Radeon RX 580 Series
(POLARIS10, DRM 3.23.0, 12.0-RELEASE-p10, LLVM 8.0.1)
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 Radeon RX 580 Series
(POLARIS10, DRM 3.23.0, 12.0-RELEASE-p10, LLVM 8.0.1)
ICD loader properties
ICD loader Name OpenCL ICD Loader
ICD loader Vendor OCL Icd free software
ICD loader Version 2.2.12
ICD loader Profile OpenCL 2.2
NOTE: your OpenCL library declares to support OpenCL 2.2,
but it seems to support up to OpenCL 2.1 only.
Ошибка сегментации(core dumped)
I think maybe others FreeBSD+OpenCL+clover users may confirm this. My guess is
that this is FreeBSD specific, because otherwise it would be noticed (maybe I
am incorrect, but I think that there are not many OpenCL users who use
FreeBSD).
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