openacc运行问题
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写了一个很简单的二重循环，采用openacc加速
#define WIDTH 1024 #define HEIGHT 1024 void timer_start(struct timeval *timev); void timer_end(double *sec,struct timeval *timev); int main() { struct timeval t1_start; double t1; int y,x; float image[HEIGHT][WIDTH]; // FILE *fp=fopen("image.pgm","wb"); fprintf(fp,"P5\n%s\n%d %d\n%d\n","#comment",WIDTH,HEIGHT,MAX_COLOR); timer_start(&t1_start); #pragma acc parallel loop copyout(image) for(y=0;y<HEIGHT;y++) { for(x=0;x<WIDTH;x++) { image[y][x]= x+y; } } timer_end(&t1,&t1_start); printf("Time: %lf seconds.\n", t1); //fwrite((unsigned char*)image,sizeof(unsigned char),WIDTH*HEIGHT,fp);fclose(fp); return 0; } void timer_start(struct timeval *timev) { gettimeofday(timev, 0L); } void timer_end(double *sec,struct timeval *timev) { struct timeval t; gettimeofday(&t, 0L); *sec = 1.0*(t.tv_sec-timev->tv_sec) + 0.000001*(t.tv_usec-timev->tv_usec); }但是提交运行，有时候可以有时候不行
[para080@psn010 test_mandelbrot]$ bsub -I -b -q q_sw_expr -n 1 -cgsp 64 ./a.out Job <52832701> has been submitted to queue <q_sw_expr> waiting for dispatch ... dispatching ... Time: 0.000781 seconds. Job 52832701 has been finished. [para080@psn010 test_mandelbrot]$ bsub -I -b -q q_sw_expr -n 1 -cgsp 64 ./a.out Job <52832702> has been submitted to queue <q_sw_expr> waiting for dispatch ... dispatching ... Time: 0.000807 seconds. Job 52832702 has been finished. [para080@psn010 test_mandelbrot]$ bsub -I -b -q q_sw_expr -n 1 -cgsp 64 ./a.out Job <52832703> has been submitted to queue <q_sw_expr> waiting for dispatch ... dispatching ... [52832703 ## Fri Jun 11 09:03:33 2021] warning: node [12]: user's mpe task: tid= 0, pid= 9119, terminated by sig 11 Job 52832703 has been finished. exit_code is 104 [para080@psn010 test_mandelbrot]$ bsub -I -b -q q_sw_expr -n 1 -cgsp 64 ./a.out Job <52832705> has been submitted to queue <q_sw_expr> waiting for dispatch ... dispatching ... [52832705 ## Fri Jun 11 09:04:06 2021] warning: node [12]: user's mpe task: tid= 0, pid= 9133, terminated by sig 11 Job 52832705 has been finished. exit_code is 104 [para080@psn010 test_mandelbrot]$ bsub -I -b -q q_sw_expr -n 1 -cgsp 64 ./a.out Job <52832707> has been submitted to queue <q_sw_expr> waiting for dispatch ... dispatching ... Time: 0.000779 seconds. Job 52832707 has been finished.u如果哦将 image 定义为 double 就肯定不行