cuda-gdb for CUDA C

概述1 #include <iostream> 2 #include <stdio.h> 3 #include "book.h" 4 5 __global__ void add(int a, int b, int *c) { 6 *c = a + b; 7 } 8 9 __global__ void kernel() {10 printf("tttt\n

 1 #include <iostream> 2 #include <stdio.h> 3 #include "book.h" 4  5 __global__ voID add(int a,int b,int *c) { 6   *c = a + b; 7 } 8  9 __global__ voID kernel() {10   printf("tttt\n");11 }12 13 int main(voID) {14   int c;15   int *dev_c;16   HANDLE_ERROR( cudamalloc((voID**)&dev_c,sizeof(int) ) );17   int count;18   HANDLE_ERROR( cudaGetDeviceCount(&count) );19   printf("count: %d\n",count);20   add<<<1,1>>>(2,7,dev_c);21   HANDLE_ERROR( cudamemcpy( &c,dev_c,sizeof(int),22                             cudamemcpyDevicetoHost ) );23   printf("2 + 7 = %d\n",c);24   cudaFree(dev_c);25   return 0;26 }

fircuda.cu  nvcc -g -G fircuda.cu

-g 表示将cpu代码(host)编译成可调式版本，-G表示将GPU代码(kernel)编译成可调式版本。

Breakpoint 2,add<<<(1,1,1),(1,1)>>> (a=2,b=7,c=0x7fffc7800000)    at fircuda.cu:66      *c = a + b;

(cuda-gdb) p a
Python Exception <type ‘exceptions.AttributeError‘> ‘gdb.Type‘ object has no attribute ‘name‘:
Python Exception <type ‘exceptions.AttributeError‘> ‘gdb.Type‘ object has no attribute ‘name‘:
$1 = 2

...

(cuda-gdb) p *c

Python Exception <type ‘exceptions.AttributeError‘> ‘gdb.Type‘ object has no attribute ‘name‘: Python Exception <type ‘exceptions.AttributeError‘> ‘gdb.Type‘ object has no attribute ‘name‘: $6 = 9

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