Virtual machine OpenCL无法在我的虚拟机上运行以下代码
我正在HP机器上的Oracle虚拟机上使用Ubuntu18.04。我试图安装并运行OpenCL代码,但我得到了OpenCL返回的以下错误。我试着把sin^2(I)和cos^2(I)的值相加,取它们的平均值。所以答案是1.000,但由于安装或机器中的一些问题,我得到了一系列错误,答案是0 我尝试过添加和删除贝涅特。它没有解决这个问题Virtual machine OpenCL无法在我的虚拟机上运行以下代码,virtual-machine,gpu,opencl,Virtual Machine,Gpu,Opencl,我正在HP机器上的Oracle虚拟机上使用Ubuntu18.04。我试图安装并运行OpenCL代码,但我得到了OpenCL返回的以下错误。我试着把sin^2(I)和cos^2(I)的值相加,取它们的平均值。所以答案是1.000,但由于安装或机器中的一些问题,我得到了一系列错误,答案是0 我尝试过添加和删除贝涅特。它没有解决这个问题 #include <stdio.h> #include <stdlib.h> #include <math.h> #include
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <CL/opencl.h>
// OpenCL kernel. Each work item takes care of one element of c
const char *kernelSource = "\n" \
"#pragma OPENCL EXTENSION cl_khr_fp64 : enable \n" \
"__kernel void vecAdd( __global double *a, \n" \
" __global double *b, \n" \
" __global double *c, \n" \
" const unsigned int n) \n" \
"{ \n" \
" //Get our global thread ID \n" \
" int id = get_global_id(0); \n" \
" \n" \
" //Make sure we do not go out of bounds \n" \
" if (id < n) \n" \
" c[id] = a[id] + b[id]; \n" \
"} \n" \
"\n" ;
int main( int argc, char* argv[] )
{
// Length of vectors
unsigned int n = 100000;
// Host input vectors
double *h_a;
double *h_b;
// Host output vector
double *h_c;
// Device input buffers
cl_mem d_a;
cl_mem d_b;
// Device output buffer
cl_mem d_c;
cl_platform_id cpPlatform; // OpenCL platform
cl_device_id device_id; // device ID
cl_context context; // context
cl_command_queue queue; // command queue
cl_program program; // program
cl_kernel kernel; // kernel
// Size, in bytes, of each vector
size_t bytes = n*sizeof(double);
// Allocate memory for each vector on host
h_a = (double*)malloc(bytes);
h_b = (double*)malloc(bytes);
h_c = (double*)malloc(bytes);
// Initialize vectors on host
int i;
for( i = 0; i < n; i++ )
{
h_a[i] = sinf(i)*sinf(i);
h_b[i] = cosf(i)*cosf(i);
}
size_t globalSize, localSize;
cl_int err;
// Number of work items in each local work group
localSize = 64;
// Number of total work items - localSize must be devisor
globalSize = ceil(n/(float)localSize)*localSize;
// Bind to platform
err = clGetPlatformIDs(1, &cpPlatform, NULL);
// Get ID for the device
err = clGetDeviceIDs(cpPlatform, CL_DEVICE_TYPE_GPU, 1, &device_id, NULL);
// Create a context
context = clCreateContext(0, 1, &device_id, NULL, NULL, &err);
// Create a command queue
queue = clCreateCommandQueue(context, device_id, 0, &err);
// Create the compute program from the source buffer
program = clCreateProgramWithSource(context, 1,
(const char **) & kernelSource, NULL, &err);
// Build the program executable
clBuildProgram(program, 0, NULL, NULL, NULL, NULL);
// Create the compute kernel in the program we wish to run
kernel = clCreateKernel(program, "vecAdd", &err);
// Create the input and output arrays in device memory for our calculation
d_a = clCreateBuffer(context, CL_MEM_READ_ONLY, bytes, NULL, NULL);
d_b = clCreateBuffer(context, CL_MEM_READ_ONLY, bytes, NULL, NULL);
d_c = clCreateBuffer(context, CL_MEM_WRITE_ONLY, bytes, NULL, NULL);
// Write our data set into the input array in device memory
err = clEnqueueWriteBuffer(queue, d_a, CL_TRUE, 0,
bytes, h_a, 0, NULL, NULL);
err |= clEnqueueWriteBuffer(queue, d_b, CL_TRUE, 0,
bytes, h_b, 0, NULL, NULL);
// Set the arguments to our compute kernel
err = clSetKernelArg(kernel, 0, sizeof(cl_mem), &d_a);
err |= clSetKernelArg(kernel, 1, sizeof(cl_mem), &d_b);
err |= clSetKernelArg(kernel, 2, sizeof(cl_mem), &d_c);
err |= clSetKernelArg(kernel, 3, sizeof(unsigned int), &n);
// Execute the kernel over the entire range of the data set
err = clEnqueueNDRangeKernel(queue, kernel, 1, NULL, &globalSize, &localSize,
0, NULL, NULL);
// Wait for the command queue to get serviced before reading back results
clFinish(queue);
// Read the results from the device
clEnqueueReadBuffer(queue, d_c, CL_TRUE, 0,
bytes, h_c, 0, NULL, NULL );
//Sum up vector c and print result divided by n, this should equal 1 within error
double sum = 0;
for(i=0; i<n; i++)
sum += h_c[i];
printf("final result: %f\n", sum/n);
// release OpenCL resources
clReleaseMemObject(d_a);
clReleaseMemObject(d_b);
clReleaseMemObject(d_c);
clReleaseProgram(program);
clReleaseKernel(kernel);
clReleaseCommandQueue(queue);
clReleaseContext(context);
//release host memory
free(h_a);
free(h_b);
free(h_c);
return 0;
}
VirtualBox似乎没有提供直接的GPU访问。请更改
CL\u设备\u类型\u GPU
=>CL\u设备\u类型\u CPU
,如果安装了intel/amd opencl驱动程序/sdk,您应该可以继续使用CPU。
DRM_IOCTL_I915_GEM_APERTURE failed: Invalid argument
Assuming 131072kB available aperture size.
May lead to reduced performance or incorrect rendering.
get chip id failed: -1 [22]
param: 4, val: 0
DRM_IOCTL_I915_GEM_APERTURE failed: Invalid argument
Assuming 131072kB available aperture size.
May lead to reduced performance or incorrect rendering.
get chip id failed: -1 [22]
param: 4, val: 0
beignet-opencl-icd: no supported GPU found, this is probably the wrong opencl-icd package for this hardware
(If you have multiple ICDs installed and OpenCL works, you can ignore this message)
final result: 0.000000