我想在英特尔 GNU 项目调试器中运行 DPC++ 程序。我已经从 Intel OneAPI Basekit 下载了 Intel GDB。它预装了 OneAPI Basekit。
下载链接是:
[https://software.intel.com/content/www/us/en/develop/tools/oneapi/base-toolkit.html#gs.ynm6aj]
如何在内核卸载到 GPU 的情况下调试以下 DPC++ 程序?如何在劣质和线程之间切换?请查看下面提供的代码。
#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;
}