c++ - SIGSEGV in CUDA allocation -

i've host array of uint64_t of size spectrum_size , need allocate , copy on gpu. when i'm trying allocate in gpu memory, continue receive sigsegv... ideas?

   uint64_t * gpu_hashed_spectrum;    uint64_t * gpu_hashed_spectrum_h = new uint64_t [spectrum_size];    handle_error(cudamalloc((void **)&gpu_hashed_spectrum, sizeof(uint64_t *) * spectrum_size));    for(i=0; i<spectrum_size; i++) {       handle_error(cudamalloc((void **)&gpu_hashed_spectrum_h[i], sizeof(uint64_t)));    }    printf("\t\t...copying\n");    for(i=0; i<spectrum_size; i++) {       handle_error(cudamemcpy((void *)gpu_hashed_spectrum_h[i], (const void *)hashed_spectrum[i], sizeof(uint64_t), cudamemcpyhosttodevice));    }    handle_error(cudamemcpy(gpu_hashed_spectrum, gpu_hashed_spectrum_h, spectrum_size * sizeof(uint64_t *), cudamemcpyhosttodevice)); 

full code available here

update:

i tried in way, noy i've got sigsegv on other parts of code (in kernel, when using array. maybe due other errors.

   uint64_t * gpu_hashed_spectrum;    handle_error(cudamalloc((void **)&gpu_hashed_spectrum, sizeof(uint64_t) * spectrum_size));    handle_error(cudamemcpy(gpu_hashed_spectrum, hashed_spectrum, spectrum_size * sizeof(uint64_t), cudamemcpyhosttodevice)); 

at least confused uint64_t** , unit64_t*.

at line 1, define gpu_hashed_spectrum pointer, pointing data of type unit64_t, @ line 3

handle_error(cudamalloc((void **)&gpu_hashed_spectrum, sizeof(uint64_t *) * spectrum_size)); 

you use gpu_hashed_spectrum pointer, pointing data of type unit64_t*.

maybe should change definition to

uint64_t** gpu_hashed_spectrum; 

as other lines.