Hi, Pekka
I think it is a printf issue, I open an issue on github
https://github.com/pocl/pocl/issues/432
Please help.
Thanks.
------------------ Original ------------------
From: "Pekka Jääskeläinen"<[email protected]>;
Date: Mon, Jan 23, 2017 02:54 PM
To: "Portable Computing Language development
discussion"<[email protected]>;
Subject: Re: [pocl-devel] Coverting size_t to ulong problem when using pocl
Hi,
Looks weird indeed. A couple of questions:
- Which version of LLVM you are using?
- Which version of pocl?
- Did you try the same code with x86_64?
- Are you sure it's not the printf() that's buggy? Can you print any ulong
on ARM successfully?
Please open an issue in github with these answered.
Thanks,
Pekka
On 01/21/2017 11:13 AM, web wrote:
> Hi, All
>
> I am writting a OpenCL program with pocl on Parallella, a zynq(cortex-A9)
> base device.
> The problem is when I try to use the get_global_id(0) as a ulong, it returns
> a strange value.
> I try the same kernel on my desktop with AMD's OpenCL SDK, it works fine.
> Can anyone help? Is there any limitation when I use pocl to do this?
>
> Here is my kernel code
> __kernel void search(__global unsigned char* block, volatile __global uint*
> output) {
> printf("[OCL_KNL]: gid = 0x%08x\n", (uint)get_global_id(0));
> printf("[OCL_KNL]: (ulong)gid = 0x%08lx\n", (ulong)get_global_id(0));
> }
>
> Here is the output
> [OCL_KNL]: (ulong)gid = 0xb170f526b1f519ee
> [OCL_KNL]: gid = 0x00000000
> [OCL_KNL]: (ulong)gid = 0xb170f526b1f519ee
> [OCL_KNL]: gid = 0x00000001
> [OCL_KNL]: (ulong)gid = 0xb170f526b1f519ee
> [OCL_KNL]: gid = 0x00000002
> [OCL_KNL]: (ulong)gid = 0xb170f526b1f519ee
> ........
>
>
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--
Pekka
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