I want to run a DPC++ program in Intel GNU Project Debugger. I have downloaded the Intel GDB from Intel OneAPI Basekit. It comes preinstalled with OneAPI Basekit.
The link to download is :
[https://software.intel.com/content/www/us/en/develop/tools/oneapi/base-toolkit.html#gs.ynm6aj]
How to debug the below DPC++ program with the kernel offloaded to the GPU? How to switch between the inferiors and threads? Please review the code provided below.
#include <CL/sycl.hpp>#include <iostream>// Location of file: <oneapi-root>/dev-utilities/<version>/include#include "dpc_common.hpp"#include "selector.hpp"using namespace std;using namespace sycl;// A device function, called from inside the kernel.static size_t GetDim(id<1> wi, int dim) { return wi[dim];}int main(int argc, char *argv[]) { constexpr size_t length = 64; int input[length]; int output[length]; // Initialize the input for (int i = 0; i < length; i++) input[i] = i + 100; try { CustomSelector selector(GetDeviceType(argc, argv)); queue q(selector, dpc_common::exception_handler); cout << "[SYCL] Using device: ["<< q.get_device().get_info<info::device::name>()<< "] from ["<< q.get_device().get_platform().get_info<info::platform::name>()<< "]\n"; range data_range{length}; buffer buffer_in{input, data_range}; buffer buffer_out{output, data_range}; q.submit([&](auto &h) { accessor in(buffer_in, h, read_only); accessor out(buffer_out, h, write_only); // kernel-start h.parallel_for(data_range, [=](id<1> index) { size_t id0 = GetDim(index, 0); int element = in[index]; // breakpoint-here int result = element + 50; if (id0 % 2 == 0) { result = result + 50; // then-branch } else { result = -1; // else-branch } out[index] = result; }); // kernel-end }); q.wait_and_throw(); } catch (sycl::exception const& e) { cout << "fail; synchronous exception occurred: " << e.what() << "\n"; return -1; } // Verify the output for (int i = 0; i < length; i++) { int result = (i % 2 == 0) ? (input[i] + 100) : -1; if (output[i] != result) { cout << "fail; element " << i << " is " << output[i] << "\n"; return -1; } } cout << "success; result is correct.\n"; return 0;}
