作者micrometer (微米)
看板C_and_CPP
標題[問題] 新手CUDA與Optix建置問題
時間Wed Dec 23 15:49:03 2015
開發平台(Platform): (Ex: VC++, GCC, Linux, ...)
VS2012
額外使用到的函數庫(Library Used): (Ex: OpenGL, ...)
CUDA6.5、Optix3.9.0
問題(Question):
我的最終目的要使用Optix做ray tracing並透過cuda加速,
目前打算先使用Optix裡的SDK sample1做測試,但不知道是不是cuda、optix版本相容問題
用Cmake建好的專案,run的時候會告訴我invalid context(程式碼會附在下面),
google有人發生類似的問題,他們是把cuda更新到6.0版本就沒問題(但我的是最新版本囧)
想請問有沒有人對cuda、optix熟,可以幫我解這個超新手問題><
餵入的資料(Input):
command line: (在exe所在資料夾下) sample1.exe -f a.jpg
預期的正確結果(Expected Output):
看教學應該是會輸出一張jpg檔
錯誤結果(Wrong Output):
error訊息: OptiX Error: Invalid context
程式碼(Code):(請善用置底文網頁, 記得排版)
sample1.c
#include <optix.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <sutil.h>
void printUsageAndExit( const char* argv0 );
int main(int argc, char* argv[])
{
/* Primary RTAPI objects */
RTcontext context;
RTprogram ray_gen_program;
RTbuffer buffer;
/* Parameters */
RTvariable result_buffer;
RTvariable draw_color;
char path_to_ptx[512];
char outfile[512];
unsigned int width = 512u;
unsigned int height = 384u;
int i;
int use_glut = 1;
outfile[0] = '\0';
/* If "--file" is specified, don't do any GL stuff */
for( i = 1; i < argc; ++i ) {
if( strcmp( argv[i], "--file" ) == 0 || strcmp( argv[i], "-f" ) == 0 )
use_glut = 0;
}
/* Process command line args */
if( use_glut )
RT_CHECK_ERROR_NO_CONTEXT( sutilInitGlut( &argc, argv ) );
for( i = 1; i < argc; ++i ) {
if( strcmp( argv[i], "--help" ) == 0 || strcmp( argv[i], "-h" ) == 0 ) {
printUsageAndExit( argv[0] );
}
else if( strcmp( argv[i], "--file" ) == 0 || strcmp( argv[i],"-f")==0) {
printf("file = %s\n",argv[i]);
if( i < argc-1 ) {
strcpy( outfile, argv[++i] );
printf("outfile = %s\n",outfile);
} else {
printUsageAndExit( argv[0] );
}
} else if ( strncmp( argv[i], "--dim=", 6 ) == 0 ) {
const char *dims_arg = &argv[i][6];
if ( sutilParseImageDimensions( dims_arg, &width, &height )
!= RT_SUCCESS ) {
fprintf( stderr, "Invalid window dimensions: '%s'\n", dims_arg );
printUsageAndExit( argv[0] );
}
} else {
fprintf( stderr, "Unknown option '%s'\n", argv[i] );
printUsageAndExit( argv[0] );
}
}
/* Create our objects and set state */
RT_CHECK_ERROR( rtContextCreate( &context ) );
RT_CHECK_ERROR( rtContextSetRayTypeCount( context, 1 ) );
RT_CHECK_ERROR( rtContextSetEntryPointCount( context, 1 ) );
RT_CHECK_ERROR( rtBufferCreate( context, RT_BUFFER_OUTPUT, &buffer ) );
RT_CHECK_ERROR( rtBufferSetFormat( buffer, RT_FORMAT_FLOAT4 ) );
RT_CHECK_ERROR( rtBufferSetSize2D( buffer, width, height ) );
RT_CHECK_ERROR( rtContextDeclareVariable( context, "result_buffer",
&result_buffer ) );
RT_CHECK_ERROR( rtVariableSetObject( result_buffer, buffer ) );
sprintf( path_to_ptx, "%s/%s", sutilSamplesPtxDir(),
"sample1_generated_draw_color.cu.ptx" );
RT_CHECK_ERROR( rtProgramCreateFromPTXFile( context, path_to_ptx,
"draw_solid_color", &ray_gen_program ) );
RT_CHECK_ERROR( rtProgramDeclareVariable( ray_gen_program, "draw_color",
&draw_color ) );
RT_CHECK_ERROR( rtVariableSet3f( draw_color, 0.462f, 0.725f, 0.0f ) );
RT_CHECK_ERROR( rtContextSetRayGenerationProgram( context, 0,
ray_gen_program ) );
/* Run */
RT_CHECK_ERROR( rtContextValidate( context ) );
RT_CHECK_ERROR( rtContextCompile( context ) );
RT_CHECK_ERROR( rtContextLaunch2D( context, 0 /* entry point */, width,
height ) );
/* Display image */
if( strlen( outfile ) == 0 ) {
RT_CHECK_ERROR( sutilDisplayBufferInGlutWindow( argv[0], buffer ) );
} else {
RT_CHECK_ERROR( sutilDisplayFilePPM( outfile, buffer ) );
}
/* Clean up */
RT_CHECK_ERROR( rtBufferDestroy( buffer ) );
RT_CHECK_ERROR( rtProgramDestroy( ray_gen_program ) );
RT_CHECK_ERROR( rtContextDestroy( context ) );
return( 0 );
}
void printUsageAndExit( const char* argv0 )
{
fprintf( stderr, "Usage : %s [options]\n", argv0 );
fprintf( stderr, "Options: --file | -f <filename> Specify file for
image output\n" );
fprintf( stderr, " --help | -h Print this usage
message\n" );
fprintf( stderr, " --dim=<width>x<height> Set image
dimensions; defaults to 512x384\n" );
exit(1);
}
draw_color.cu檔內
#include <optix.h>
#include <optixu/optixu_math_namespace.h>
using namespace optix;
rtDeclareVariable(uint2, launch_index, rtLaunchIndex, );
rtBuffer<float4, 2> result_buffer;
rtDeclareVariable(float3, draw_color, , );
RT_PROGRAM void draw_solid_color()
{
result_buffer[launch_index] = make_float4(draw_color, 0.f);
}
補充說明(Supplement):
1.黃色那行為出現invalid context的function
2.之前有用別的cuda程式測試過沒出現問題,但這個的cu檔會出現紅色波浪底線@@
3.測其他範例程式也會卡在rtContextCreate( &context )這行
4.皆是用x64模式執行
請問是Cmake完後還要再另外Link(應該不必吧)還是cuda、optix版本出問題?
沒碰過Optix、cuda,新手問題還請多包涵><
--
※ 發信站: 批踢踢實業坊(ptt.cc), 來自: 140.113.210.20
※ 文章網址: https://www.ptt.cc/bbs/C_and_CPP/M.1450856946.A.4B8.html
※ 編輯: micrometer (140.113.210.20), 12/23/2015 15:52:32
→ micrometer: 自己的問題自己回XD 應該是Optix3.9版本太新 12/23 16:54
→ micrometer: 改裝3.7版本就成功了,可能剛出一週bug還沒修掉(吧? 12/23 16:54