topic Re: [hellow world sycl program] runtime call abort() while call sycl::handler::parallel_for in GPU Compute Software

[hellow world sycl program] runtime call abort() while call sycl::handler::parallel_for

gamma-coco — Fri, 08 Sep 2023 11:38:31 GMT

It should be a stupid problem. Can any one please tell me what was happened .

The following is the problem code:

#include <sycl/sycl.hpp> #include <vector> #include <iostream> #include <string> #if FPGA_HARDWARE || FPGA_EMULATOR || FPGA_SIMULATOR #include <sycl/ext/intel/fpga_extensions.hpp> #endif void exception_handler(sycl::exception_list exceptions) { for (std::exception_ptr const& e : exceptions) { try { std::rethrow_exception(e); } catch (sycl::exception const& e) { std::wcout << L"Caught asynchronous SYCL exception: "; std::cout << e.what() << std::endl; } } } int wmain(int argc, char* argv[]) { constexpr size_t dataSize = 10000; std::vector<int> hostData; hostData.resize(dataSize); sycl::queue commandQueue(sycl::gpu_selector_v); std::cout << "run in device: " << commandQueue.get_device().get_info<sycl::info::device::name>() << std::endl; { sycl::range<1> dataRange(dataSize); sycl::buffer<int, 1> dataBuffer(hostData.data(), hostData.size()); commandQueue.submit([&](sycl::handler& handle) { sycl::accessor<int, 1, sycl::access::mode::write, sycl::access::target::device> dataAccesor(dataBuffer, handle, sycl::write_only, sycl::no_init); handle.parallel_for(dataRange, [=](auto index) { dataAccesor[index] = (double)index; }); }); } return 0; }

Re: [hellow world sycl program] runtime call abort() while call sycl::handler::parallel_for

Ben_A_Intel — Fri, 08 Sep 2023 15:59:02 GMT

Hello! A good first thing to check is: do you have a supported GPU? Because you're specifically requesting a GPU queue...

sycl::queue commandQueue(sycl::gpu_selector_v);

... if you don't have a GPU you'll get an exception when you try to use it.

If you aren't sure, can you please include your output if you run sycl-ls?

A few other helpful things to know would be: How are you compiling your program? What OS and what compiler version are you using? Is there any other information included in the abort() message?

Re: [hellow world sycl program] runtime call abort() while call sycl::handler::parallel_for

gamma-coco — Sat, 09 Sep 2023 10:14:59 GMT

Thank @Ben_A_Intel for quick response.

I have a GPU, it is the result of sycl-ls

C:\Program Files (x86)\Intel\oneAPI>sycl-ls [opencl:acc:0] Intel(R) FPGA Emulation Platform for OpenCL(TM), Intel(R) FPGA Emulation Device 1.2 [2023.16.6.0.28_042959] [opencl:cpu:1] Intel(R) OpenCL, Intel(R) Core(TM) i7-10700K CPU @ 3.80GHz 3.0 [2023.16.6.0.28_042959] [opencl:gpu:2] Intel(R) OpenCL Graphics, Intel(R) Arc(TM) A770 Graphics 3.0 [31.0.101.4669] [ext_oneapi_level_zero:gpu:0] Intel(R) Level-Zero, Intel(R) Arc(TM) A770 Graphics 1.3 [1.3.26771] C:\Program Files (x86)\Intel\oneAPI>

I use visual studio 2022 & DPC++ in windows.

The abort() occurs by memory access exception:

Unhandled exception at 0x00007FF8DAB24C3C in SyclRun.exe: Microsoft C++ exception: sycl::_V1::runtime_error at memory location 0x00000094D2739570.

if I comment out the "handle.parallel_for()" statement:

{ sycl::range<1> dataRange(dataSize); sycl::buffer<int, 1> dataBuffer(hostData.data(), hostData.size()); commandQueue.submit([&](sycl::handler& handle) { sycl::accessor<int, 1, sycl::access::mode::write, sycl::access::target::device> dataAccesor(dataBuffer, handle, sycl::write_only, sycl::no_init); //handle.parallel_for(dataRange, [=](auto index) { // dataAccesor[index] = index; //}); }); }

the program exit normally.

Re: [hellow world sycl program] runtime call abort() while call sycl::handler::parallel_for

gamma-coco — Sat, 09 Sep 2023 12:02:27 GMT

I did the following 2 changes and it works:

1.) use float instead of double in Kenerl function

** It seems Intel A770 GPU don't support FP64

2.) conclude the submit call to a seperate function.

** If I don't do it, it failed with "No kernel named was found -46 (PI_ERROR_INVALID_KERNEL_NAME)"

The worked code is:

#include <sycl/sycl.hpp> #include <vector> #include <iostream> #include <string> #if FPGA_HARDWARE || FPGA_EMULATOR || FPGA_SIMULATOR #include <sycl/ext/intel/fpga_extensions.hpp> #endif constexpr int dataSize = 1000; void vectorInitialize(sycl::queue& commandQueue, std::vector<float>& dataSet) { sycl::range<1> num_items{ dataSet.size() }; sycl::buffer<float, 1> sum_buf(dataSet.data(), num_items); commandQueue.submit([&](sycl::handler& h) { sycl::accessor<float, 1, sycl::access::mode::write> accessBuffer(sum_buf, h, sycl::write_only, sycl::no_init); h.parallel_for(num_items, [=](sycl::id<1> i) { accessBuffer[i] = 0.01F * (float)i; }); }); } void exception_handler(sycl::exception_list exceptions) { for (std::exception_ptr const& e : exceptions) { try { std::rethrow_exception(e); } catch (sycl::exception const& e) { std::wcout << L"Caught asynchronous SYCL exception: "; std::cout << e.what() << std::endl; } } } int wmain(int argc, wchar_t* argv[]) { auto selector = sycl::default_selector_v; std::vector<float> dataSet_1; dataSet_1.resize(dataSize); try { sycl::queue commandQueue(sycl::gpu_selector_v, exception_handler); std::cout << "Running on device: " << commandQueue.get_device().get_info<sycl::info::device::name>() << std::endl; std::cout << "Vector size: " << dataSet_1.size() << std::endl; vectorInitialize(commandQueue, dataSet_1); // Wait until compute tasks on GPU done commandQueue.wait(); sycl::buffer<float> bufferA(dataSet_1); sycl::host_accessor readAccessor(bufferA, sycl::read_only); for (auto item : readAccessor) { std::cout << item << std::endl; } } catch (sycl::exception const& e) { std::cout << "An exception is caught: " << e.what() <<std::endl; std::terminate(); } return 0; }

Thanks for @Ben_A_Intel for your help.

Now the new question is why I must conclude the vectorInitialize to a function.

Re: [hellow world sycl program] runtime call abort() while call sycl::handler::parallel_for

gamma-coco — Sat, 09 Sep 2023 12:11:34 GMT

Thanks all,

I name the Kernal and now it worked without conclude to a function. That final code is:

#include <sycl/sycl.hpp> #include <vector> #include <iostream> #include <string> #if FPGA_HARDWARE || FPGA_EMULATOR || FPGA_SIMULATOR #include <sycl/ext/intel/fpga_extensions.hpp> #endif constexpr int dataSize = 1000; void exception_handler(sycl::exception_list exceptions) { for (std::exception_ptr const& e : exceptions) { try { std::rethrow_exception(e); } catch (sycl::exception const& e) { std::wcout << L"Caught asynchronous SYCL exception: "; std::cout << e.what() << std::endl; } } } int wmain(int argc, wchar_t* argv[]) { auto selector = sycl::default_selector_v; std::vector<float> dataSet_1; dataSet_1.resize(dataSize); try { sycl::queue commandQueue(sycl::gpu_selector_v, exception_handler); std::cout << "Running on device: " << commandQueue.get_device().get_info<sycl::info::device::name>() << std::endl; std::cout << "Vector size: " << dataSet_1.size() << std::endl; { sycl::range<1> num_items{ dataSet_1.size() }; sycl::buffer<float, 1> sum_buf(dataSet_1.data(), num_items); commandQueue.submit([&](sycl::handler& h) { sycl::accessor<float, 1, sycl::access::mode::write> accessBuffer(sum_buf, h, sycl::write_only, sycl::no_init); h.parallel_for<class MyKernal>(num_items, [=](sycl::id<1> i) { accessBuffer[i] = 0.01F * (float)i; }); }); } // Wait until compute tasks on GPU done commandQueue.wait(); sycl::buffer<float> bufferA(dataSet_1); sycl::host_accessor readAccessor(bufferA, sycl::read_only); for (auto item : readAccessor) { std::cout << item << std::endl; } } catch (sycl::exception const& e) { std::cout << "An exception is caught: " << e.what() <<std::endl; std::terminate(); } return 0; }

The point is I must name the kernal.

Re:[hellow world sycl program] runtime call abort() while call sycl::handler::parallel_for

SeshaP_Intel — Mon, 11 Sep 2023 08:37:32 GMT

Hi,

We can see that your issue got resolved. Could you please confirm whether we can close this thread from our end?

Thanks and Regards,

Pendyala Sesha Srinivas

Re: Re:[hellow world sycl program] runtime call abort() while call sycl::handler::parallel_for

gamma-coco — Mon, 11 Sep 2023 12:05:42 GMT

dear @SeshaP_Intel ,

Thank you for reply.

Yes, this issue can be closed.

Thanks & regards,

Gamma

Re:[hellow world sycl program] runtime call abort() while call sycl::handler::parallel_for

SeshaP_Intel — Mon, 11 Sep 2023 14:23:04 GMT

Hi,

Thanks for the confirmation. If you need any additional information, please post a new question as this thread will no longer be monitored by Intel.

Thanks and Regards,

Pendyala Sesha Srinivas