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clbinuse.c
266 lines (207 loc) · 7.95 KB
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clbinuse.c
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/*
* This software is Copyright (c) 2012 Sayantan Datta <std2048 at gmail dot com>
* and it is hereby released to the general public under the following terms:
* Redistribution and use in source and binary forms, with or without modification, are permitted.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <CL/cl.h>
#define MAX_THREADS 100
#define MAXGPUS 8
#define OCL_OPTIMIZATIONS "-cl-strict-aliasing -cl-mad-enable"
#define OCL_BINARY_OPTIONS "-fno-bin-llvmir -fno-bin-source -fno-bin-exe -fbin-amdil"
cl_device_id askWhichDevice( size_t nDevices, cl_device_id *devices );
void printDeviceName( size_t , cl_device_id );
char *readKernelBin( size_t * ,char *);
void checkErr( char * func, cl_int err );
int
buildProgramFromAmdBin(unsigned int platform_id,unsigned int dev_id,char *binFile)
{
int i = 0;
cl_int err = CL_SUCCESS;
cl_int nPlatforms = 0;
cl_platform_id *platforms = NULL;
cl_platform_id platform = (cl_platform_id)NULL;
cl_context_properties cprops[3];
cl_context context;
size_t nDevices = 0;
cl_device_id devices[MAXGPUS];
cl_device_id device_id = 0;
size_t binary_size = 0;
char * binary = NULL;
cl_program program = NULL;
char pbuf[100];
cl_command_queue cmdq;
cl_mem iBuf,oBuf;
cl_kernel kernel;
cl_int *inBuf,*outBuf;
inBuf=(cl_int*)malloc(MAX_THREADS*sizeof(cl_int));
outBuf=(cl_int*)malloc(MAX_THREADS*sizeof(cl_int));
size_t N=MAX_THREADS;
cl_event evnt;
char buildOptions[200];
char opencl_log[1024*64];
/* figure out the number of platforms on this system. */
err = clGetPlatformIDs( 0, NULL, &nPlatforms );
checkErr( "clGetPlatformIDs", err );
printf( "Number of platforms found: %d\n", nPlatforms );
if( nPlatforms == 0 )
{
fprintf( stderr, "Cannot continue without any platforms. Exiting.\n" );
return( -1 );
}
platforms = (cl_platform_id *)malloc( sizeof(cl_platform_id) * nPlatforms );
err = clGetPlatformIDs( nPlatforms, platforms, NULL );
checkErr( "clGetPlatformIDs", err );
/* Check for AMD platform. */
err = clGetPlatformInfo( platforms[platform_id], CL_PLATFORM_VENDOR,
sizeof(pbuf), pbuf, NULL );
checkErr( "clGetPlatformInfo", err );
if( strcmp(pbuf, "Advanced Micro Devices, Inc.") == 0 )
{
printf( "Found AMD platform\n" );
platform = platforms[platform_id];
}
if( platform == (cl_context_properties)0 )
{
fprintf( stderr, "Could not find an AMD platform. Exiting.\n" );
exit(0);
}
clGetDeviceIDs(platform,
CL_DEVICE_TYPE_ALL,MAXGPUS, devices, &nDevices);
cprops[0] = CL_CONTEXT_PLATFORM;
cprops[1] = (cl_context_properties)platform;
cprops[2] = (cl_context_properties)NULL;
context = clCreateContext(cprops, 1, &devices[dev_id], NULL, NULL,
&err);
checkErr( "clCreateContext", err );
printDeviceName(dev_id,devices[dev_id]);
/* read in the binary kernel. */
binary = readKernelBin( &binary_size, binFile );
/* create an OpenCL program from the binary kernel. */
program = clCreateProgramWithBinary( context, 1, &devices[dev_id], &binary_size,
(const unsigned char**)&binary, NULL, &err );
checkErr( "clCreateProgramWithBinary", err );
sprintf(buildOptions,"%s %s",OCL_BINARY_OPTIONS ,OCL_OPTIMIZATIONS);
/* build the kernel source for all available devices in the context. */
err = clBuildProgram( program, 0, NULL,buildOptions , NULL, NULL );
checkErr("clGetProgramBuildInfo",clGetProgramBuildInfo(program, devices[dev_id],
CL_PROGRAM_BUILD_LOG, sizeof(opencl_log), (void *) opencl_log,
NULL));
/*Report build errors and warnings*/
if (err != CL_SUCCESS)
{ fprintf(stderr, "Compilation log: %s\n", opencl_log);
exit(0);
}
#ifdef REPORT_OPENCL_WARNINGS
else if (strlen(opencl_log) > 1)
fprintf(stderr, "Compilation log: %s\n", opencl_log);
#endif
/* IT IS APPLICATION-DEPENDENT WHAT TO DO AFTER THIS POINT. */
printf( "\n*** REPLACE THIS WITH ACTUAL WORK ***\n" );
for(i=0;i<MAX_THREADS;i++)
inBuf[i]=i;
kernel=clCreateKernel(program,"test",&err) ;
if(err) {printf("Create Kernel test FAILED\n"); return 0;}
cmdq=clCreateCommandQueue(context, devices[dev_id], CL_QUEUE_PROFILING_ENABLE,&err);
checkErr("Create CMDQ FAILED\n",err);
iBuf=clCreateBuffer(context,CL_MEM_READ_ONLY|CL_MEM_COPY_HOST_PTR,MAX_THREADS*sizeof(cl_int),inBuf,&err);
if((iBuf==(cl_mem)0)) { checkErr("Create Buffer FAILED\n",err); }
oBuf=clCreateBuffer(context,CL_MEM_WRITE_ONLY,MAX_THREADS*sizeof(cl_int),NULL,&err);
if((oBuf==(cl_mem)0)) {checkErr("Create Buffer FAILED\n",err); }
checkErr("Set Kernel Arg FAILED arg0\n",clSetKernelArg(kernel,0,sizeof(cl_mem),&iBuf));
checkErr("Set Kernel Arg FAILED arg1\n",clSetKernelArg(kernel,1,sizeof(cl_mem),&oBuf));
err=clEnqueueNDRangeKernel(cmdq,kernel,1,NULL,&N,NULL,0,NULL,&evnt);
clWaitForEvents(1,&evnt);
checkErr("Write FAILED\n",clEnqueueReadBuffer(cmdq,oBuf,CL_TRUE,0,MAX_THREADS*sizeof(cl_uint),outBuf, 0, NULL, NULL));
for(i=0;i<MAX_THREADS;i++)
printf("%d\n",outBuf[i]);
return (0);
}
char *
readKernelBin( size_t * binary_size ,char *filename)
{
int i = 0;
int filename_size = 0;
FILE * input = NULL;
size_t size = 0;
char * binary = NULL;
printf( "Reading in binary kernel from %s\n", filename );
input = fopen( filename, "rb" );
if( input == NULL )
{
fprintf( stderr, "Unable to open %s for reading.\n", filename );
}
fseek( input, 0L, SEEK_END );
size = ftell( input );
rewind( input );
binary = (char *)malloc( size );
fread( binary, sizeof(char), size, input );
fclose( input );
if( binary_size != NULL )
{
*binary_size = size;
}
return( binary );
}
void
printDeviceName( size_t dev_id, cl_device_id device )
{
int i = 0;
cl_int err = CL_SUCCESS;
cl_device_type devType;
char pbuf[100];
printf( "DEVICE[%d]: ", dev_id );
err = clGetDeviceInfo( device, CL_DEVICE_TYPE, sizeof(devType),
&devType, NULL );
checkErr( "clGetDeviceInfo", err );
switch( devType )
{
case CL_DEVICE_TYPE_CPU: printf( "CL_DEVICE_TYPE_CPU, " ); break;
case CL_DEVICE_TYPE_GPU: printf( "CL_DEVICE_TYPE_GPU, " ); break;
default: printf( "Unknown device type %d, ", devType );
break;
}
err = clGetDeviceInfo( device, CL_DEVICE_NAME, sizeof(pbuf),
pbuf, NULL );
checkErr( "clGetDeviceINfo", err );
printf( "Name=%s\n", pbuf );
}
void
checkErr( char *func, cl_int err )
{
if( err != CL_SUCCESS )
{
fprintf( stderr, "%s(): ", func );
switch( err )
{
case CL_BUILD_PROGRAM_FAILURE: fprintf (stderr, "CL_BUILD_PROGRAM_FAILURE"); break;
case CL_COMPILER_NOT_AVAILABLE: fprintf (stderr, "CL_COMPILER_NOT_AVAILABLE"); break;
case CL_DEVICE_NOT_AVAILABLE: fprintf (stderr, "CL_DEVICE_NOT_AVAILABLE"); break;
case CL_DEVICE_NOT_FOUND: fprintf (stderr, "CL_DEVICE_NOT_FOUND"); break;
case CL_INVALID_BINARY: fprintf (stderr, "CL_INVALID_BINARY"); break;
case CL_INVALID_BUILD_OPTIONS: fprintf (stderr, "CL_INVALID_BUILD_OPTIONS"); break;
case CL_INVALID_CONTEXT: fprintf (stderr, "CL_INVALID_CONTEXT"); break;
case CL_INVALID_DEVICE: fprintf (stderr, "CL_INVALID_DEVICE"); break;
case CL_INVALID_DEVICE_TYPE: fprintf (stderr, "CL_INVALID_DEVICE_TYPE"); break;
case CL_INVALID_OPERATION: fprintf (stderr, "CL_INVALID_OPERATION"); break;
case CL_INVALID_PLATFORM: fprintf (stderr, "CL_INVALID_PLATFORM"); break;
case CL_INVALID_PROGRAM: fprintf (stderr, "CL_INVALID_PROGRAM"); break;
case CL_INVALID_VALUE: fprintf (stderr, "CL_INVALID_VALUE"); break;
case CL_OUT_OF_HOST_MEMORY: fprintf (stderr, "CL_OUT_OF_HOST_MEMORY"); break;
default: fprintf (stderr, "Unknown error code: %d", (int)err); break;
}
fprintf (stderr, "\n");
exit( err );
}
}
void main(int argc, char **argv)
{
if(argc<2)
{
printf("USAGE <./clbinuse><KernelBin>\n");
exit(-1);
}
buildProgramFromAmdBin(1,0,argv[1]);
}