If it helps, this is packaged in Fedora:
https://koji.fedoraproject.org/koji/buildinfo?buildID=1131711
Though current hardware I tested on does not have half2 support, errors
I get when trying to compile using:
g++ testHalf.cpp -o testHalf -lOpenCL
testHalf.cpp:6:1: error: ‘__fp16’ does not name a type; did you mean
‘._116’?
__fp16 Add( __fp16 a, __fp16 b ) {
^~~~~~
._116
testHalf.cpp: In function ‘int main(int, char**)’:
testHalf.cpp:67:2: error: ‘__fp16’ was not declared in this scope
__fp16 a = 3.5;
^~~~~~
testHalf.cpp:67:2: note: suggested alternative: ‘._116’
__fp16 a = 3.5;
^~~~~~
._116
testHalf.cpp:68:37: error: ‘a’ was not declared in this scope
printf("return %f \n", (float)Add(a, 0.53) );
^
testHalf.cpp:68:33: error: ‘Add’ was not declared in this scope
printf("return %f \n", (float)Add(a, 0.53) );
^~~
testHalf.cpp:87:85: warning: ‘_cl_command_queue*
clCreateCommandQueue(cl_context, cl_device_id,
cl_command_queue_properties, cl_int*)’ is deprecated
[-Wdeprecated-declarations]
mand_queue cmdQueue = clCreateCommandQueue(context_id, device_id, 0,
&status);
^
In file included from testHalf.cpp:3:
/usr/include/CL/cl.h:1443:1: note: declared here
clCreateCommandQueue(cl_context /* context */,
^~~~~~~~~~~~~~~~~~~~
testHalf.cpp:87:85: warning: ‘_cl_command_queue*
clCreateCommandQueue(cl_context, cl_device_id,
cl_command_queue_properties, cl_int*)’ is deprecated
[-Wdeprecated-declarations]
mand_queue cmdQueue = clCreateCommandQueue(context_id, device_id, 0,
&status);
^
In file included from testHalf.cpp:3:
/usr/include/CL/cl.h:1443:1: note: declared here
clCreateCommandQueue(cl_context /* context */,
^~~~~~~~~~~~~~~~~~~~
testHalf.cpp:90:8: error: expected ‘;’ before ‘host’
__fp16 host[4] = {0.3, 4.8, 2.5, 3.1};
^~~~~
;
testHalf.cpp:91:83: error: ‘host’ was not declared in this scope
clCreateBuffer(context_id, CL_MEM_READ_WRITE, sizeof(__fp16) * 4,
host, &status);
^~~~
testHalf.cpp:91:83: note: suggested alternative: ‘short’
clCreateBuffer(context_id, CL_MEM_READ_WRITE, sizeof(__fp16) * 4,
host, &status);
^~~~
short
On 08/12/2018 11:08 PM, Michal Babej wrote:
Hello,
Pocl_version 0.13 + llvm 3.8 are both VERY old. I would be surprised
if half type works there, especially in combination with 64bit ARM. I
recommend you get LLVM 6 and pocl at least 1.1, otherwise you'll
experience problems.
Regards,
-- mb
------------------------------------------------------------------------
*From:* Wuweijia <[email protected]>
*Sent:* Monday, August 13, 2018 5:33:46 AM
*To:* Portable Computing Language development discussion
*Cc:* Fanbohao
*Subject:* [pocl-devel] 【Hi】 There is Question about half2
Hi：
I write the opencl demo. In this demo , I wrote the half2 type .
But it compile it failed.
The output as below:
2018-07-13 03:24:42.805561780] POCL: in fn void
pocl_incr_device_ref() at line 294:
*** INFO *** [GPUStub] void pocl_incr_device_ref() devices_ref=2
### use a saved llvm::Module
### fetching kernel metadata for kernel testHalf program 0x7f80a43000
input llvm::Module 0x7f80bf9580
[2018-07-13 03:24:42.805712080] POCL: in fn cl_mem
POclCreateBuffer(cl_context, cl_mem_flags, size_t, void *, cl_int *)
at line 94:
[2018-07-13 03:24:42.805752880] POCL: in fn cl_int
POclEnqueueNDRangeKernel(cl_command_queue, cl_kernel, cl_uint, const
size_t *, const size_t *, const size_t *, cl_uint, const cl_event *,
cl_event *) at line 133:
*** INFO *** Preferred WG size multiple 8
[2018-07-13 03:24:42.805786020] POCL: in fn cl_int
POclEnqueueNDRangeKernel(cl_command_queue, cl_kernel, cl_uint, const
size_t *, const size_t *, const size_t *, cl_uint, const cl_event *,
cl_event *) at line 209:
*** INFO *** Queueing kernel testHalf with local size 1 x 1 x 1 group
sizes 3 x 1 x 1...
### calling the kernel compiler for kernel testHalf local_x 1 local_y
1 local_z 1 parallel_filename:
/sdcard/pocl/kcache/HK/BOCDHECGLACEHDFDNAGEMLIFMJJKNKIKKHGMB/testHalf/1-1-1/parallel.bc
### cloning the preloaded LLVM IR
[2018-07-13 03:24:42.806801840] POCL: in fn llvm::Module
*kernel_library(cl_device_id) at line 1341:
*** INFO *** Using
/data/data/org.pocl.libs/files/share/pocl/kernel-aarch64-unknown-linux-android-generic.bc
as the built-in lib.
### autovectorizer enabled
LV: Checking a loop in "_cl_printf" from
/sdcard/pocl/kcache/temp_t6kfN4.cl
LV: Loop hints: force=? width=0 unroll=0
LV: Found a loop: .lr.ph.i
LV: Can't if-convert the loop.
LV: Not vectorizing: Cannot prove legality.
LV: Checking a loop in "_cl_printf" from
/sdcard/pocl/kcache/temp_t6kfN4.cl
LV: Loop hints: force=? width=0 unroll=0
LV: Found a loop:
LV: Can't if-convert the loop.
LV: Not vectorizing: Cannot prove legality.
LV: Checking a loop in "_cl_printf" from
/sdcard/pocl/kcache/temp_t6kfN4.cl
LV: Loop hints: force=? width=0 unroll=0
LV: Found a loop:
LV: Can't if-convert the loop.
LV: Not vectorizing: Cannot prove legality.
LV: Checking a loop in "_cl_printf" from
/sdcard/pocl/kcache/temp_t6kfN4.cl
LV: Loop hints: force=? width=0 unroll=0
LV: Found a loop:
LV: Can't if-convert the loop.
LV: Not vectorizing: Cannot prove legality.
LV: Checking a loop in "_cl_printf" from
/sdcard/pocl/kcache/temp_t6kfN4.cl
LV: Loop hints: force=? width=0 unroll=0
LV: Found a loop:
LV: Can't if-convert the loop.
LV: Not vectorizing: Cannot prove legality.
LV: Checking a loop in "_cl_printf" from
/sdcard/pocl/kcache/temp_t6kfN4.cl
LV: Loop hints: force=? width=0 unroll=0
LV: Found a loop:
LV: Can't if-convert the loop.
LV: Not vectorizing: Cannot prove legality.
LV: Checking a loop in "_cl_printf" from
/sdcard/pocl/kcache/temp_t6kfN4.cl
LV: Loop hints: force=? width=0 unroll=0
LV: Not vectorizing: Cannot prove legality.
LV: Checking a loop in "_cl_printf" from
/sdcard/pocl/kcache/temp_t6kfN4.cl
LV: Loop hints: force=? width=0 unroll=0
LV: Not vectorizing: Cannot prove legality.
LV: Checking a loop in "_cl_printf" from
/sdcard/pocl/kcache/temp_t6kfN4.cl
LV: Loop hints: force=? width=0 unroll=0
LV: Not vectorizing: Cannot prove legality.
LV: Checking a loop in "_cl_printf" from
/sdcard/pocl/kcache/temp_t6kfN4.cl
LV: Loop hints: force=? width=0 unroll=0
LV: Not vectorizing: Cannot prove legality.
LV: Checking a loop in "_cl_printf" from
/sdcard/pocl/kcache/temp_t6kfN4.cl
LV: Loop hints: force=? width=0 unroll=0
LV: Not vectorizing: Cannot prove legality.
/usr1/code/source/pocl/llvm-3.8.0.src/lib/Bitcode/Writer/ValueEnumerator.h:132:
unsigned int llvm::ValueEnumerator::getTypeID(llvm::Type*) const:
assertion "I != TypeMap.end() && "Type not in ValueEnumerator!"" failed
libc:
/usr1/code/source/pocl/llvm-3.8.0.src/lib/Bitcode/Writer/ValueEnumerator.h:132:
unsigned int llvm::ValueEnumerator::getTypeID(llvm::Type*) const:
assertion "I != TypeMap.end() && "Type not in ValueEnumerator!"" failed
the test is abort now; I have add it ” pragma OPENCL EXTENSION
cl_khr_fp16 : enable” to cl file but it still faled
Env:
CPU: AARCH64
OS: LINUX / android
Pocl_version 0.13 + llvm 3.8
GPU: no
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